Detection device for heating component and operation method thereof

Abstract

The invention discloses a detection device for a heating component and an operation method, the heating component is arranged in an electromagnetic induction type aerosol generating product, and the detection device comprises a base arranged along a horizontal direction; the clamping mechanism is fixed on the base and is used for clamping an aerosol generating product; an included angle is formed between the PCB and the horizontal direction, the PCB and the base are fixed, a detection circuit and a detection coil are arranged on the PCB, the detection circuit is used for sensing an electromagnetic signal of the detection coil, and the electromagnetic signal is used for determining the consistency of the equivalent impedance of the heating component. The detection device provided by the invention is used for detecting the electromagnetic induction performance of the electromagnetic induction type aerosol generating product.

Description

Technical Field

[0001] The present invention relates to the field of novel tobacco, and in particular to a detection device for a heating component and an operation method thereof. Background Art

[0002] Electromagnetic induction heat-not-burn cigarettes are a new type of tobacco product. Different from the traditional combustion method, it uses the principle of electromagnetic induction to precisely control the temperature and evenly heat the tobacco, so that the tobacco releases the required flavor and nicotine at a lower temperature, effectively avoiding the generation of harmful substances caused by high-temperature combustion, thereby reducing the potential risk to the health of users and the pollution of the surrounding environment by secondhand smoke, and is healthier and more environmentally friendly.

[0003] For electromagnetic induction heat-not-burn cigarettes, the electromagnetic induction characteristics of the heating component directly affect the product's performance and user experience. When the relative position of the heating component and the coil changes, the mutual inductance value may change, which in turn affects the electromagnetic induction characteristics. Especially for built-in electromagnetic induction heat-not-burn cigarettes, since the heating component is located inside the heat-not-burn cigarette, in addition to production tolerances, it will also be affected by external factors such as environmental vibrations during production, transportation and use, causing different batches of heating components to shift relative to the heat-not-burn cigarettes, that is, the relative position of the heating component and the coil changes, thereby affecting the consistency of heating performance and smoking experience.

[0004] However, there is currently no suitable detection device that can detect the electromagnetic induction characteristics of built-in electromagnetic induction heat-not-burn cigarettes. Summary of the invention

[0005] In a first aspect, an embodiment of the present application provides a detection device for a heating component, wherein the heating component is disposed in an electromagnetic induction aerosol generating product, comprising:

[0006] A base is arranged in a horizontal direction;

[0007] A clamping mechanism, fixed to the base and used to clamp the aerosol generating product;

[0008] The PCB board is arranged at an angle with the horizontal direction and fixed to the base. A detection circuit and a detection coil are arranged on the PCB board. The detection circuit is used to sense the electromagnetic signal of the detection coil, and the electromagnetic signal is used to determine the consistency of the equivalent impedance of the heating component.

[0009] In some embodiments, it also includes: a rotating mechanism and a turntable, the rotating mechanism includes a first shell, a transmission shaft and a rotating shaft are arranged in the first shell, the transmission shaft is arranged in a horizontal direction and can be driven to rotate, the transmission shaft is sleeved and fixed with a worm, the rotating shaft is arranged in a vertical direction, the rotating shaft is sleeved and fixed with a worm wheel, the worm is meshed with the worm wheel, the end of the rotating shaft away from the base is fixed to the turntable, and the clamping mechanism is fixed to the turntable.

[0010] In some embodiments, the clamping mechanism includes a second shell, which is fixed to the turntable and has a bidirectional threaded rod inside. Both ends of the bidirectional threaded rod are respectively provided with movable parts. By rotating the bidirectional threaded rod, the movable parts can move relative to or opposite to each other to clamp or release the aerosol generating product.

[0011] In some embodiments, the movable portion extends in a vertical direction, and a clamping portion is fixed to one end away from the base, and a recess is provided on the clamping portion, and the recess is used to clamp the aerosol generating product.

[0012] In some embodiments, it also includes: a telescopic mechanism extending in the vertical direction, used to adjust the position of the heating component in the vertical direction, and one end of the telescopic mechanism is fixed to the base, and the other end of the telescopic mechanism is fixed to the first shell.

[0013] In some embodiments, the detection coil is a planar detection coil, and the planar detection coil is fixed on the PCB board by printing.

[0014] In some embodiments, the electromagnetic signal is a voltage signal, and the detection circuit includes a resonant amplifier circuit for determining the AC voltage amplified signal of the detection coil, and the AC voltage amplified signal is used to determine the consistency of the equivalent impedance of the heating component. The resonant amplifier circuit includes a first inductor, a first resistor and a first capacitor, wherein the first inductor and the first resistor come from the connected detection coil.

[0015] In some embodiments, the detection circuit also includes a rectifier circuit, a filter circuit and / or an analog-to-digital conversion unit, wherein the rectifier circuit is used to convert the AC voltage amplification signal into a DC voltage amplification signal, the filter circuit is used to filter the DC voltage amplification signal, and the analog-to-digital conversion unit is used to convert the filtered analog voltage signal into a digital voltage signal, and the digital voltage signal is used to determine the consistency of the equivalent impedance of the heating component.

[0016] In some embodiments, the resonant amplifier circuit includes a series resonant amplifier circuit, which includes an AC voltage, a first inductor, a first resistor, a first capacitor, a second resistor and an amplifier element, wherein one end of the second resistor is connected to the AC voltage, the other end of the second resistor is connected to the inverting input end of the amplifier element and one end of the detection coil, the other end of the detection coil is connected to the output end of the amplifier element through the first capacitor, and the non-inverting input end of the amplifier element is grounded, or,

[0017] The resonant amplifier circuit includes a parallel resonant amplifier circuit, which includes an AC voltage, a first inductor, a first resistor, a first capacitor, a second resistor, an amplifier element and a feedback resistor, wherein the detection coil, the first capacitor and the feedback resistor are connected in parallel to each other, one end of the second resistor is connected to the AC voltage, the other end of the second resistor is connected to the inverting input end of the amplifier element, one end of the feedback resistor, one end of the first capacitor, and one end of the detection coil, the other end of the detection coil is connected to the output end of the amplifier element, and the non-inverting input end of the amplifier element is grounded.

[0018] In some embodiments, the detection device satisfies at least one or more of the following conditions:

[0019] The clamping mechanism also includes an operating portion, which is disposed outside the second housing and fixed to the bidirectional threaded rod;

[0020] The rotating mechanism also includes a motor, which is fixed outside the first housing and is used to drive the transmission shaft to rotate;

[0021] The bottom surface of the base is respectively provided with a supporting part, and the bottom end of the supporting part is provided with an anti-slip part;

[0022] An operation panel is provided on the base for the operator to input instructions or output results to the operator.

[0023] In a second aspect, an embodiment of the present application provides an operating method of a detection device, comprising:

[0024] After placing the aerosol generating product into the clamping mechanism, rotating the operating part to clamp the aerosol generating product;

[0025] Adjusting the telescopic mechanism and / or the rotating mechanism so that the magnetic flux between the heating component and the detection coil disposed in the aerosol generating article is as large as possible;

[0026] Input a command to the operation panel to determine the electromagnetic signal of the detection coil.

[0027] In a third aspect, an embodiment of the present application provides a method for determining the consistency of the equivalent impedance of a heating component based on the detection device in any of the above embodiments, comprising:

[0028] In the same alternating magnetic field, respectively determine a detection voltage value of the detection device when the heating component to be tested is placed, a standard voltage value of the detection device when the standard heating component is placed, and a background voltage value of the detection device when no heating component is placed, wherein the detection voltage value, the standard voltage value, and the background voltage value are respectively determined based on corresponding digital voltage signals;

[0029] Determine a standard voltage change rate corresponding to a standard heating component based on the standard voltage value and the background voltage value;

[0030] Determine the detection voltage change rate corresponding to the heating component to be tested based on the detection voltage value and the background voltage value;

[0031] Determine the voltage sensitivity corresponding to the heating component to be tested based on the detection voltage change rate and the standard voltage change rate, wherein the voltage sensitivity is used to indicate the difference between the electromagnetic induction performance of the heating component to be tested and the standard heating component;

[0032] determining whether the absolute value of the voltage sensitivity is less than or equal to a preset threshold;

[0033] When the absolute value of the voltage sensitivity is less than or equal to the preset threshold, it is determined that the equivalent impedance of the heating component to be tested is consistent with that of the standard heating component.

[0034] In some embodiments, the step of determining the voltage sensitivity corresponding to the heating component to be tested based on the detection voltage change rate and the standard voltage change rate includes:

[0035] Based on the detection voltage change rate and the standard voltage change rate, determining a change rate difference between an absolute value of the detection voltage change rate and an absolute value of the standard voltage change rate;

[0036] The voltage sensitivity corresponding to the heating component to be tested is determined based on the ratio of the change rate difference to the absolute value of the standard voltage change rate.

[0037] In some embodiments, the step of determining the standard voltage change rate corresponding to the standard heating component based on the standard voltage value and the background voltage value includes:

[0038] Based on the standard voltage value and the background voltage value, determining a first voltage difference between an absolute value of the standard voltage value and an absolute value of the background voltage value;

[0039] Based on the ratio of the first voltage difference to the absolute value of the standard voltage value, a standard voltage change rate corresponding to the standard heating component is determined.

[0040] In some embodiments, the step of determining the detection voltage change rate corresponding to the heating component to be tested based on the detection voltage value and the background voltage value includes:

[0041] Determining a second voltage difference between an absolute value of the detection voltage value and an absolute value of the background voltage value based on the detection voltage value and the background voltage value;

[0042] Based on the ratio of the absolute value of the second voltage difference to the standard voltage value, the detection voltage change rate corresponding to the heating component to be tested is determined.

[0043] In some embodiments, it also includes:

[0044] When the voltage sensitivity is greater than the preset threshold, it is determined that the equivalent impedance of the heating component to be tested is inconsistent with that of the standard heating component.

[0045] In some embodiments, the preset threshold is 1% to 3%. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 Schematic diagram showing a detection device provided according to some embodiments of the present application Figure 1 ;

[0047] Figure 2 A schematic diagram showing an electromagnetic induction aerosol generating product provided according to some embodiments of the present application;

[0048] Figure 3 Schematic diagram showing a detection device provided according to some embodiments of the present application Figure 2 ;

[0049] Figure 4 A cross-sectional view showing a rotating mechanism provided according to some embodiments of the present application;

[0050] Figure 5 A schematic diagram showing a clamping mechanism provided according to some embodiments of the present application;

[0051] Figure 6 A flow chart showing an operating method of a detection device provided in some embodiments of the present application;

[0052] Figure 7 A block diagram showing a detection circuit of a detection device provided in some embodiments of the present application;

[0053] Figure 8 A series resonant amplifier circuit diagram provided according to some embodiments of the present application is shown;

[0054] Fig. 9 A parallel resonant amplifier circuit diagram provided according to some embodiments of the present application is shown;

[0055] Fig.10 A flow chart showing a method for determining consistency of equivalent impedance of a heating component provided according to some embodiments of the present application;

[0056] Fig.11 A flow chart for determining the voltage sensitivity corresponding to the heating component to be tested provided according to some embodiments of the present application is shown;

[0057] Fig.12 A flow chart showing a method for determining a standard voltage change rate corresponding to a standard heating component according to some embodiments of the present application is shown;

[0058] Fig.13 A flow chart for determining a detection voltage change rate corresponding to a heating component to be tested according to some embodiments of the present application is shown;

[0059] Fig.14 The mutual inductance coupling model between the detection coil and the heating component provided in some embodiments of the present application is shown;

[0060] Fig.15a A planar spiral detection coil provided according to some embodiments of the present application is shown;

[0061] Fig.15b A planar rectangular detection coil provided according to some embodiments of the present application is shown;

[0062] Fig.15c A cylindrical solenoid type detection coil provided according to some embodiments of the present application is shown;

[0063] Fig.15d A short dipole pair spiral detection coil provided according to some embodiments of the present application is shown. DETAILED DESCRIPTION

[0064] 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.

[0065] 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.

[0066] In the description of this embodiment, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this embodiment can be understood according to specific circumstances.

[0067] 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.

[0068] refer to Figure 1 The present application provides a detection device for a heating component, wherein the heating component is located in an electromagnetic induction aerosol generating product (such as Figure 2 As shown in FIG. 1 ), or “built-in electromagnetic induction aerosol generating product”. The detection device comprises: a base 100, a clamping mechanism 107 and a PCB board 108. The base 100 is arranged in a horizontal direction (such as Figure 1 In the present embodiment, the cross section of the base 100 is square. In other embodiments, the base 100 may also be other geometric shapes, which are not specifically limited herein.

[0069] The clamping mechanism 107 is fixed on the base 100 and is used to clamp, for example, Figure 2 In this embodiment, the aerosol generating article is arranged in a vertical direction (such as Figure 1 The aerosol generating article may be inserted into the clamping mechanism 107 and clamped by the clamping mechanism 107 in the horizontal direction (such as the Z direction shown in FIG. Figure 1 The aerosol-generating article is inserted into the clamping mechanism 107 (in the X direction shown in the figure) and is clamped by the clamping mechanism 107, and is not specifically limited here, as long as the clamping mechanism 107 can clamp the aerosol-generating article.

[0070] The PCB board 108 is set at an angle to the horizontal direction and fixed to the base 100. The PCB board 108 is provided with a detection circuit and a detection coil 103. The detection circuit is used to sense the electromagnetic signal of the detection coil 103, and the electromagnetic signal is used to determine the consistency of the equivalent impedance of the heating component. How to determine the consistency of the equivalent impedance of the heating component based on the electromagnetic signal will be described in detail below. In this embodiment, the PCB board 108 is set at an angle to the horizontal direction (such as Figure 1 The angle between the PCB board 108 and the horizontal direction (such as the X direction shown in FIG. 1 ) is 90 degrees, that is, the PCB board 108 is arranged perpendicular to the horizontal direction. In other embodiments, the PCB board 108 is arranged perpendicular to the horizontal direction (such as the X direction shown in FIG. 1 ). Figure 1The angle (in the X direction shown) can also be less than 90 degrees, which is not specifically limited here, as long as the detection circuit can sense the electromagnetic signal of the detection coil 103 when the aerosol generating product is clamped by the clamping mechanism 107.

[0071] It should be noted that the "heating component" can be understood as a component in a built-in electromagnetic induction aerosol-generating product that quickly heats up the tobacco matrix or other atomizable materials through eddy current action. The aerosol-generating product can be a smoking product in the shape of a cigarette, including but not limited to tobacco flakes, tobacco particles, shredded tobacco, reconstituted tobacco, and other tobacco products that can be heated by an aerosol-generating device to generate an aerosol for the user to inhale. Furthermore, the "heating component" is a part of the aerosol-generating product, that is, the aerosol-generating product includes the "heating component".

[0072] The detection device provided in the present application is capable of detecting the electromagnetic induction characteristics of a built-in electromagnetic induction aerosol generating product, filling the gap in the prior art that is lacking a suitable device for detecting the electromagnetic induction characteristics of a built-in electromagnetic induction aerosol generating product.

[0073] In some embodiments, the detection mechanism further includes: a third housing 102 for fixing the PCB board 108. In this embodiment, the third housing 102 is arranged along a vertical direction (eg Figure 1 The third housing 102 extends in the Z direction as shown in FIG. 1 and is disposed on one side of the base 100. Preferably, an opening is provided on one side of the third housing 102 facing the clamping mechanism 107 so that the detection coil 103 on the PCB board 108 is exposed outside the third housing 102.

[0074] In some embodiments, reference Figure 1 The detection device further includes: a rotating mechanism 105 and a rotating disk 106. Figure 3 and Figure 4 As shown, the rotating mechanism 105 includes a first housing 10501, and a transmission shaft 10503 and a rotating shaft 10502 are disposed in the first housing 10501. The transmission shaft 10503 is arranged along the horizontal direction (such as Figure 1 The transmission shaft 10503 is provided with and fixed with a worm 10505. The rotating shaft 10502 is arranged in a vertical direction (such as the X direction shown in FIG. 1 ). Figure 1The rotating shaft 10502 is provided with and fixed with a worm wheel 10504, and the worm 10505 is meshed with the worm wheel 10504. The end of the rotating shaft 10502 away from the base 100 is fixed to the turntable 106, and the turntable 106 is fixed to the clamping mechanism 107. When the transmission shaft 10503 is driven to rotate, the transmission shaft 10503 drives the worm 10505 to rotate, and drives the worm wheel 10504 to rotate through the meshing action, thereby driving the rotating shaft 10502 and the turntable 106 to rotate, and finally realizing the circumferential rotation of the clamping mechanism 107, so as to adjust the position of the heating component in the aerosol generating product relative to the detection coil 103, maximize the magnetic flux, and enhance the mutual inductance, so as to improve the detection sensitivity of the detection device. For example, when the heating component is as follows Figure 2 In the sheet structure shown, the rotating mechanism 105 can be adjusted so that the plane where the heating component is located is as parallel as possible to the plane where the detection coil 103 is located. The rotating mechanism 105 can also include a motor 10506, which can be fixed outside the first housing 10501 to drive the transmission shaft 10503 to rotate.

[0075] In some embodiments, reference Figure 5 Combined with Figure 3 As shown, the clamping mechanism 107 includes a second shell 10701, and the second shell 10701 is fixed to the turntable 106. A bidirectional threaded rod 10702 is disposed in the second shell 10701, and movable parts 10703 are respectively sleeved at both ends of the bidirectional threaded rod 10702. By rotating the bidirectional threaded rod 10702, the movable parts 10703 can move relative to or opposite to each other to clamp or release the aerosol generating product.

[0076] In some embodiments, the second housing 10701 includes a frame with a groove, and the bidirectional threaded rod 10702 is arranged in a horizontal direction (such as Figure 5 The movable portion 10703 is arranged in the groove along the vertical direction (such as Figure 5 The movable part 10703 extends in the Z direction as shown, with one end close to the base 100 located in the groove, and the end away from the base 100 being fixed with a clamping portion 10704. The clamping portion 10704 is provided with a recess 10705, and when the movable part 10703 moves relatively, the recess 10705 provided on the clamping portion 10704 can clamp the aerosol generating product.

[0077] In some embodiments, the detection device further includes: an operating portion 10706, the operating portion 10706 is located outside the second shell 10701 and fixed to the bidirectional threaded rod 10702. The movable portion 10703 is provided with an internal thread that is compatible with the bidirectional threaded rod 10702. By rotating the operating portion 10706, the bidirectional threaded rod 10702 can be driven to rotate, thereby enabling the movable portion 10703 to move relative to or opposite to each other to clamp or release the aerosol generating product. Exemplarily, the operator can rotate the holding operating portion 10706 clockwise or counterclockwise to cause the movable portion 10703 to move relative to or opposite to each other; or, the operating portion 10706 is driven by a motor to rotate clockwise or counterclockwise, which is not specifically limited here.

[0078] In some embodiments, reference Figure 1 The detection device further includes: a telescopic mechanism 104. The telescopic mechanism 104 is arranged in a vertical direction (such as Figure 1 The Z direction shown in the figure is extended to adjust the position of the heating component in the vertical direction. Figure 3 As shown, one end of the telescopic mechanism 104 is fixed to the base 100, and the other end of the telescopic mechanism 104 is fixed to the first shell 10501. Exemplarily, the telescopic mechanism 104 can be a telescopic rod, on which an external thread is provided, and the base 100 is provided with a matching internal thread. By rotating the telescopic rod to screw it in or out to get closer to or away from the base 100, the heating component can be adjusted in the vertical direction (such as Figure 1 The position of the heating element 100 in the Z direction as shown in the figure is adjusted so that the center of the heating element and the center of the detection coil 103 are on the same horizontal line as much as possible. The rotation of the telescopic rod can be done manually or by a motor driven by the base 100, which is not specifically limited here.

[0079] In some embodiments, the detection coil 103 is a planar detection coil and is fixed on the PCB board 108 by printing. The inventors have found that when the position of the heating component changes slightly, the detection circuit can more sensitively sense the electromagnetic signal of the planar detection coil, thereby improving the detection sensitivity of the detection device.

[0080] In some embodiments, reference Figure 1 The bottom surface of the base 100 is provided with support parts 101, and the bottom end of the support parts 101 is provided with anti-skid parts to improve the stability of the placement of the detection device. In this embodiment, the number of support parts 101 is 4, which are respectively arranged around the base 100.

[0081] In some embodiments, an operation panel 110 is provided on the base 100 for the operator to input instructions or output results to the operator. In this embodiment, the operation panel 110 is arranged on a side of the base 100 away from the third shell 102 to facilitate the operator's operation. Exemplarily, the input instructions may include instructions to instruct the motor to start or stop, and / or instructions to instruct the detection circuit to perform detection. The output result may include a judgment result of whether the electromagnetic signal (e.g., voltage signal) of the detection coil 103 and / or the equivalent impedance of the heating component are consistent.

[0082] refer to Figure 6 , the operating method of the detection device may include the following steps:

[0083] Step S1, after placing the aerosol generating product into the clamping mechanism 107, the operating part 10706 is rotated to clamp the aerosol generating product.

[0084] Step S2, adjusting the telescopic mechanism 104 and / or the rotating mechanism 105 so that the magnetic flux of the heating component and the detection coil 103 disposed in the aerosol generating article exceeds a preset threshold.

[0085] The telescopic mechanism 104 can be manually adjusted or driven by a motor to move in a vertical direction (such as Figure 1 The height of the aerosol generating product (in the Z direction shown) becomes larger or smaller; the rotating mechanism 105 can be driven by the motor 10506 to achieve this. For example, the operator can input a command through the operation panel 110 to start the motor, and then the rotation of the shaft 10502 drives the turntable 106 and the clamping mechanism 107 that clamps the aerosol generating product to move circumferentially, so as to adjust the position of the heating component in the aerosol generating product relative to the detection coil 103, increase the magnetic flux as much as possible, and enhance the mutual inductance, so as to improve the detection sensitivity of the detection device. When the clamping mechanism 107 rotates to the desired position, the operator can input a command through the operation panel 110 again to stop the motor. For example, when the heating component is as follows Figure 2 In the case of the sheet structure shown, the “desired position” may be understood as a position where the plane where the heating component is located is as parallel as possible to the plane where the detection coil 103 is located.

[0086] Step S3: inputting instructions to the operation panel 110 to determine the electromagnetic signal of the detection coil 103. The electromagnetic signal can be used to determine the consistency of the equivalent impedance of the heating component.

[0087] In some embodiments, the electromagnetic signal is a voltage signal. The detection circuit includes a resonant amplifier circuit 10, which is used to determine the AC voltage amplified signal of the detection coil, and the AC voltage amplified signal is used to determine the consistency of the equivalent impedance of the heating component. Figure 8 and Fig. 9The resonant amplifier circuit 10 includes a first inductor L D , the first resistor R D and the first capacitor C. The first inductor L D and the first resistor R D From the connected detection coil 103, in other words, the detection coil 103 can be equivalent to the first inductance L after being connected D and the first resistor R D And form a resonant circuit with the first capacitor C. Exemplarily, the detection coil 103 can be connected to the circuit through the connection ports at both ends thereof, and the voltage at both ends of the detection coil 103 can be connected to the measuring instrument of the oscilloscope through a voltage probe to obtain an AC voltage amplification signal. The amplifier circuit based on the resonant topology can amplify the smaller voltage signal of the detection coil 103, thereby improving the accuracy of the calculation result.

[0088] In some embodiments, reference Figure 8 The resonant amplifier circuit 10 includes a series resonant amplifier circuit 10, and the series resonant amplifier circuit 10 includes an AC voltage U AC , the first inductor L D , the first resistor R D , first capacitor C, second resistor R 2 and amplifying element A. Among them, the second resistor R 2 One end of the AC voltage U AC Connect the second resistor R 2 The other end of is connected to the inverting input end of the amplifying element A and one end of the detecting coil, the other end of the detecting coil is connected to the output end of the amplifying element A through the first capacitor C, and the non-inverting input end of the amplifying element A is grounded. Exemplarily, the amplifying element A may be an amplifier (e.g., an operational amplifier).

[0089] In some embodiments, reference Fig. 9 The resonant amplifier circuit 10 includes a parallel amplifier resonant circuit, and the parallel resonant amplifier circuit 10 includes an AC voltage U AC , the first inductor L D , the first resistor R D , first capacitor C, second resistor R 2 , amplifier element A and feedback resistor R f Among them, the detection coil, the first capacitor C and the feedback resistor R f In parallel, the second resistor R 2 One end of the AC voltage U AC Connect the second resistor R 2 The other end is connected to the inverting input of the amplifier element A and the feedback resistor R fThe first capacitor C is connected to one end of the detection coil, the other end of the detection coil is connected to the output end of the amplifier element A, and the non-inverting input end of the amplifier element A is grounded. Exemplarily, the amplifier element A can be an amplifier (such as an operational amplifier). By setting the feedback resistor R f , a part of the output signal of the amplifier is fed back to the inverting input terminal of the amplifier to establish a negative feedback loop inside the amplifier, thereby stabilizing the gain of the amplifier, preventing the amplifier from operating in the saturation or nonlinear region, and improving the circuit operation stability.

[0090] In some embodiments, reference Figure 8 and Fig. 9 The resonant amplifier circuit 10 also includes a diode D e , the third resistor R e and the second capacitor C e Among them, the diode D e The positive electrode of the diode D is connected to the output terminal of the amplifier element A. e The negative electrode and the third resistor R e One end of the second capacitor C e One end of the third resistor R e With the second capacitor C e In parallel, the third resistor R e The other end of the second capacitor C e The other end of the diode D e It has a unidirectional conduction function, which can prevent the signal from being transmitted in reverse and avoid interference with the amplifier and subsequent circuits. e With the second capacitor C e Can ensure the normal and stable operation of the amplifier.

[0091] The above two resonant amplifier circuits 10 (such as Figure 8 The series resonant amplifier circuit 10 and Fig. 9 The parallel resonant amplifier circuit 10 shown can determine the equivalent impedance consistency of the heating component by the change of the voltage amplification signal. The difference is that when the circuit adjusts the resonant working condition, the total impedance of the series resonant amplifier circuit reaches the minimum value at the resonant frequency, so the current passing through the loop reaches the maximum value at resonance; the total impedance of the parallel resonant amplifier circuit reaches the maximum value at the resonant frequency, so the current passing through the loop reaches the minimum value at resonance.

[0092] The series resonant amplifier circuit has a high sensitivity to impedance changes and can effectively reflect the slight impedance difference of the heating component, so it is more suitable for precise detection of heating components with high performance requirements. If higher detection accuracy (such as judgment of slight differences) is required, it is preferred to use a series resonant amplifier circuit.

[0093] For the parallel resonant amplifier circuit, its response to the signal amplitude is more stable, and its anti-interference performance is stronger, which is suitable for batch detection and complex detection environments. If the detection environment is more complex (such as large interference signals), preferably, a parallel resonant amplifier circuit is used.

[0094] It should be noted that although the present application only shows embodiments of a series resonant amplifier circuit and a parallel resonant amplifier circuit, those skilled in the art can understand that the present application can also be implemented using other composite resonant circuits.

[0095] In some embodiments, the AC voltage is provided by an AC voltage source chip. Specifically, the AC voltage source chip may be a chip with a model number of AD9851BRSZRL. It is a direct digital synthesizer (DDS) chip produced by Analog Devices, Inc. (ADI), which is powerful and highly integrated and can generate high-precision sinusoidal wave signals.

[0096] In some embodiments, the detection circuit further includes a rectifier circuit 20, a filter circuit 30 and / or a digital-to-analog conversion unit 40. Figure 7 In this embodiment, the detection circuit also includes a rectifier circuit 20, a filter circuit 30 and a digital-to-analog conversion unit 40. The rectifier circuit 20 is used to convert the AC voltage amplification signal into a DC voltage amplification signal. The filter circuit 30 is used to filter the DC voltage amplification signal, so that the filtered signal is purer and more stable, providing a reliable data basis for subsequent data analysis and processing. By setting the rectifier circuit 20 and the filter circuit 30, the voltage amplification signal is conditioned into a weak current signal for the processor to process, thereby further improving the accuracy of the processing result. The digital-to-analog conversion unit 40 is used to convert the filtered analog voltage signal into a digital voltage signal, and the digital voltage signal is used to determine the consistency of the equivalent impedance of the heating component.

[0097] The following specifically describes how to determine the consistency of the equivalent impedance of the heating component based on the digital voltage signal. Fig.10 , the method comprises the following steps:

[0098] Step S11, determining the detection voltage value U of the detection device under the heating component to be tested in the same alternating magnetic field eq_exam , the standard voltage value U of the detection device under the standard heating component eq_std , and the background voltage value U of the detection device without the heating component placed D , where the detection voltage value U eq_exam , standard voltage value U eq_std and background voltage value U Dare determined based on corresponding digital voltage signals respectively;

[0099] Step S12, based on the standard voltage value U eq_std and background voltage value U D , determine the standard voltage change rate δ corresponding to the standard heating component std ;

[0100] Step S13: determining the detection voltage change rate δ corresponding to the heating component to be tested based on the detection voltage value and the background voltage value. exam ;

[0101] Step S14, based on the detected voltage change rate δ exam and standard voltage change rate δ std , determine the voltage sensitivity S corresponding to the heating component to be tested. The voltage sensitivity S is used to indicate the difference between the electromagnetic induction performance of the heating component to be tested and the standard heating component;

[0102] Step S15, determining whether the absolute value of the voltage sensitivity S is less than or equal to a preset threshold;

[0103] When the absolute value of the voltage sensitivity S is less than or equal to the preset threshold, step S16 is executed to determine whether the equivalent impedance of the heating component to be tested is consistent with that of the standard heating component.

[0104] It should be noted that a "standard heating component" can be understood as a heating component that, under the conditions of a given heating coil, heating power and heating frequency, has consistent induced eddy currents, brings about consistent temperature rise effects, and meets the design requirements of the aerosol generating system. "Consistency of equivalent impedance of heating components" can be understood as the temperature rise of heating components of the same batch or different batches is consistent or nearly consistent within the same time, giving users the same or slightly different puffing experience, thereby avoiding inconsistent puffing experience caused by inconsistent equivalent impedance of heating components.

[0105] In some embodiments, the detection voltage value U eq_exam , standard voltage value U eq_std and background voltage value U D It can be a voltage amplitude; in other embodiments, the detection voltage value U eq_exam , standard voltage value U eq_std and background voltage value U D It can also be the effective value of voltage.

[0106] According to the method for determining the consistency of the equivalent impedance of the heating component of the present application, the heating component and the detection coil are taken as a whole, and the impedance change of the whole is converted into a voltage change. The voltage sensitivity S corresponding to the heating component to be tested is calculated and its absolute value is compared with a preset threshold value, so as to determine the consistency of the equivalent impedance of the heating component, thereby providing a detection method for the electromagnetic induction performance of the electromagnetic induction aerosol generating system; in addition, the present application calculates the voltage sensitivity S of the heating component to be tested based on the voltage change rates corresponding to the heating component to be tested and the standard heating component, respectively, rather than directly based on the voltage difference, so that smaller voltage changes can be amplified, thereby improving the accuracy of the voltage sensitivity.

[0107] In some embodiments, reference Fig.11 , step S14, based on the detection voltage change rate δ exam and standard voltage change rate δ std , determining the voltage sensitivity S corresponding to the heating component to be tested may include the following steps:

[0108] Step S141, based on the detection voltage change rate δ exam and standard voltage change rate δ std , determine the difference in rate of change between the absolute value of the detection voltage change rate and the absolute value of the standard voltage change rate.

[0109] Step S142: based on the change rate difference and the standard voltage change rate δ std The ratio of the absolute values ​​of and determines the voltage sensitivity S corresponding to the heating component to be tested.

[0110] In other words, the voltage sensitivity S can be expressed as,

[0111]

[0112] In formula (1), S represents the voltage sensitivity corresponding to the heating component to be tested; δ exam Indicates the detection voltage change rate; δ std Indicates the standard voltage change rate.

[0113] In some embodiments, reference Fig.12 , step S12, based on the standard voltage value U eq_std and background voltage value U D , determine the standard voltage change rate δ corresponding to the standard heating component std , which may include the following steps:

[0114] Step S121, based on the standard voltage value U eq_std and background voltage value U D , determine a first voltage difference between the absolute value of the standard voltage value and the absolute value of the background voltage value.

[0115] Step S122: based on the first voltage difference and the standard voltage value U eq_std The absolute value ratio of the standard voltage change rate δ corresponding to the standard heating component is determined std .

[0116] In other words, the standard voltage change rate δ std It can be expressed as,

[0117]

[0118] In formula (2), δ std Indicates the standard voltage change rate; U eq_std Indicates the standard voltage value; U D Indicates the background voltage value.

[0119] In some embodiments, reference Fig.13 , step S13, based on the detected voltage value U eq_exam and background voltage value U D , determine the detection voltage change rate δ corresponding to the heating component to be tested exam , which may include the following steps:

[0120] Step S131, based on the detected voltage value U eq_exam and background voltage value U D , determining a second voltage difference between the absolute value of the detection voltage value and the absolute value of the background voltage value.

[0121] Step S132: based on the second voltage difference and the standard voltage value U eq_std The absolute value ratio of the detection voltage to the heating component to be tested is determined by exam .

[0122] In other words, the detection voltage change rate δ exam It can be expressed as,

[0123]

[0124] In formula (3), δ exam Indicates the detection voltage change rate; U eq_exam Indicates the detection voltage value; U D Indicates the background voltage value.

[0125] According to formulas (1) to (3), the voltage sensitivity S can also be expressed as:

[0126]

[0127] In formula (4), S represents the voltage sensitivity corresponding to the heating component to be tested; U eq_exam Indicates the detection voltage value; Ueq_std Indicates the standard voltage value; U D Indicates the background voltage value.

[0128] It can be seen from formula (4) that the present application can detect the voltage value U eq_exam With standard voltage value U eq_std The difference between the measured heating component and the standard heating component indicates the difference in electromagnetic induction performance between the measured heating component and the standard heating component. The smaller the voltage sensitivity S, the smaller the difference between the measured heating component and the standard heating component, that is, the better the consistency; when the voltage sensitivity S = 0, the measured heating component is the standard heating component.

[0129] In some embodiments, reference Fig.10 , the method further comprises the following steps:

[0130] When the voltage sensitivity is greater than the preset threshold, step S17 is performed to determine that the equivalent impedance of the tested heating component is inconsistent with that of the standard heating component. In other words, the temperature rise of the tested heating component and the standard heating component in the same time is inconsistent, resulting in different user puffing experience.

[0131] In some embodiments, the preset threshold ε may be 1% to 3%. The preset threshold ε may also be understood as the maximum allowable error between the electromagnetic induction performance of the heating component to be tested and the standard heating component. When the voltage sensitivity difference between the heating component to be tested and the standard heating component is within the range of the preset threshold ε, the heating component to be tested may be determined to be qualified, that is, its equivalent impedance is consistent with that of the standard heating component, and satisfies

[0132] |S|≤ε (5)

[0133] In formula (5), S represents the voltage sensitivity corresponding to the heating component to be tested; ε represents the preset threshold value.

[0134] In order to improve the accuracy of voltage sensitivity, the inventors further studied the influencing factors of voltage sensitivity based on the mutual inductance coupling model.

[0135] The mutual inductance coupling model between the detection coil and the heating component is as follows: Fig.14 As shown. According to Faraday's law of electromagnetic induction, when a block conductor is placed in an alternating magnetic field or moves in a fixed magnetic field, an induced current is generated in the conductor and closed in the conductor. Therefore, the heating component under the eddy current effect can be equivalent to a short-circuit loop current model. At this time, the heating component can be equivalent to a coil. Figure 8 As shown, L D Represents the self-inductance of the detection coil, R D Represents the internal resistance of the detection coil, I D Indicates the current flowing through the detection coil; L H Represents the self-inductance of the heating element, R HIndicates the internal resistance of the heating element, I H represents the current flowing through the heating component; M represents the mutual inductance between the heating component and the detection coil.

[0136] The induced electromotive force V on the detection coil mD It can be expressed as:

[0137] V mD =jωMI H (6)

[0138] In formula (6), V mD represents the induced electromotive force on the detection coil; j represents the imaginary unit; ω represents the angular frequency of the alternating voltage; M represents the mutual inductance between the heating component and the detection coil; I H Indicates the current flowing through the heating element.

[0139] The total voltage V on the detection coil D can be expressed as:

[0140] V D =Z D I D +V mD =Z D I D +jωMI H (7)

[0141] In formula (7), V D Represents the total voltage on the detection coil; Z D It represents the impedance of the detection coil without the detection coil placed; I D Represents the current flowing through the detection coil; V mD represents the induced electromotive force on the detection coil; j represents the imaginary unit; ω represents the angular frequency of the alternating voltage; M represents the mutual inductance between the heating component and the detection coil; I H Indicates the current flowing through the heating element.

[0142] The induced electromotive force V on the heating part mH It can be expressed as:

[0143] V mH =jωMI D (8)

[0144] In formula (8), V mH represents the induced electromotive force on the heating component; j represents the imaginary unit; M represents the mutual inductance between the heating component and the detection coil; I D Indicates the current flowing through the detection coil.

[0145] Total voltage V on the heating element H It can be expressed as:

[0146] V H =Z H I H +V mH =Z H I H +jωMI D (9)

[0147] Formula (9), V H Indicates the total voltage on the heating element; Z H Indicates the impedance of the heating component; I H Indicates the current flowing through the heating element; V mH represents the induced electromotive force on the heating component; j represents the imaginary unit; ω represents the angular frequency of the alternating voltage; M represents the mutual inductance between the heating component and the detection coil; I D Indicates the current flowing through the detection coil.

[0148] Since the heating component is equivalent to a short-circuit current model, the total voltage V on the heating component H =0, that is, formula (9) can be expressed as:

[0149] V H =Z H I H +jωMI D =0,

[0150] Solve I H ,Right now

[0151]

[0152] Substituting formula (10) into formula (7), we can obtain:

[0153]

[0154] Simplified:

[0155]

[0156] Divide formula (11) by I D , we can get the equivalent impedance Z of the detection coil eq :

[0157]

[0158] Z D =R D +jωL D (13)

[0159] Substituting formula (13) into formula (12) and separating the real part and the imaginary part, we can obtain:

[0160]

[0161] Among them, the real part coefficient is also the proportional coefficient of the internal resistance change of the detection coil The imaginary coefficient is also the proportional coefficient of the self-inductance change of the detection coil

[0162] refer to Figure 8 and Fig. 9 Due to the virtual short and virtual open characteristics of the amplifier, the AC voltage U AC Under certain conditions, the current flowing through the detection coil is the same when the detection coil is not placed with a heating component (i.e., before the heating component is placed) and when the detection coil is placed with a heating component (i.e., after the heating component is placed). Therefore, the voltage change of the detection coil before and after the heating component is placed is equal to its impedance change, that is, the impedance change rate of the detection coil is equal to the voltage change rate δ, which can be expressed as,

[0163]

[0164] in,

[0165] In formula (15), δ represents the impedance change rate (or voltage change rate) of the detection coil; Z eq It represents the equivalent impedance of the detection coil under the heating component; Z D It represents the impedance of the detection coil without the heating component. D is the equivalent quality factor of the detection coil; β is the proportional coefficient of the change of the internal resistance of the detection coil; α is the proportional coefficient of the change of the self-inductance of the detection coil.

[0166] It can be seen that the impedance change rate (or voltage change rate) δ of the detection coil is related to the mutual inductance M of the heater to the detection coil. Therefore, the impedance change rate (or voltage change rate) δ of the detection coil can be increased by increasing the mutual inductance M.

[0167] Refer to formula (1), voltage sensitivity In other words, the accuracy of the voltage sensitivity S can be improved by increasing the mutual inductance M and increasing the impedance change rate (or voltage change rate) δ of the detection coil.

[0168] The inventors have also found that by designing a reasonable detection coil structure and size, the mutual inductance M can be improved. In other words, according to the different structures of the heating component to be tested, the mutual inductance M can be improved by designing a corresponding detection coil, thereby improving the detection accuracy.

[0169] According to the law of electromagnetic induction, the induced current in the heating component is proportional to the strength of the induced magnetic field generated by the detection coil and its component perpendicular to the surface of the heating component. It can be seen that increasing the strength of the induced magnetic field and its vertical component are key factors in improving the mutual inductance M. Therefore, the detection coil is optimized from the following aspects, including but not limited to: (1) The detection coil adopts a multi-turn spiral structure design to improve the strength of the induced magnetic field. The number of turns and layers of the coil can be adjusted according to the detection accuracy requirements, but the frequency and inductance value design must be combined to avoid the resonant frequency being too low; (2) The plane (cross section) of the detection coil should be as parallel as possible to the plane of the heating component (i.e., the plane with the largest cross-sectional area), and the distance should be kept within a small range to increase the vertical component of the magnetic field; (3) The design of the detection coil should ensure that its center position is aligned with the center of the heating component, thereby optimizing the distribution of the vertical component of the magnetic field; (4) The diameter of the detection coil should match the size of the heating component to ensure that the induced magnetic field can completely cover the surface of the heating component; (5) In the design of a multi-layer spiral detection coil, the spacing between the layers should be minimized to improve the uniformity and coupling strength of the magnetic field.

[0170] Figures 15a to 15d The structure diagram of the detection coil provided in some embodiments of the present application is shown. Figures 15a to 15d Specifically, according to the different structures of the heating component to be tested, the mutual inductance M can be increased by setting a corresponding detection coil on the detection device, thereby improving the detection accuracy.

[0171] For flat, thin-film or large-area heating components to be tested, the following methods can be used: Fig.15a The planar spiral detection coil shown ( Fig.15a The difference between the left and right pictures in the figure is that the number of turns is different, and the structure is both planar spiral type). The planar spiral coil can generate a uniform induced magnetic field in the plane area, and its vertical component is the largest, which is suitable for covering a larger plane area.

[0172] For the heating parts with long strip or rectangular cross-section, the following methods can be used: Fig.15b The planar rectangular detection coil shown. The induced magnetic field of the planar rectangular coil is mainly concentrated in the long strip area, which is suitable for matching with the strip heating component.

[0173] For cylindrical, annular or axisymmetric heating components, the following can be used: Fig.15c The cylindrical solenoid type detection coil shown. The axial magnetic field strength of the cylindrical solenoid type coil is the largest, so it is suitable for surrounding a cylindrical heating body to generate an induced magnetic field with a strong vertical component.

[0174] For the dispersed, locally characteristic or small heating components to be tested (such as locally asymmetric heating components, heating components with complex geometric structures), the following methods can be used: Fig.15dThe short dipole-pair spiral detection coil is shown. The short dipole-pair spiral coil can generate a strong local magnetic field, so its distribution is suitable for small and complex geometric heating objects, especially for local detection.

[0175] Table 1 shows the planar spiral detection coil (such as Fig.15a As shown) in the series resonant amplifier circuit (such as Figure 8 Parameter design example shown in ).

[0176] Table 1 Planar spiral detection coil (such as Fig.15a As shown) in the series resonant amplifier circuit (such as Figure 8 Parameter design example in

[0177] parameter Numeric <![CDATA[Self-inductance L of the detection coil when the heating component to be measured is not placed D > 10μH <![CDATA[Internal resistance R of the detection coil when the heating component to be measured is not placed D > 3Ω AC excitation source frequency f 3MHz

[0178] It should be noted that the parameters of the detection coil, such as the self-inductance L D and internal resistance R D , can be determined by combining theoretical calculation, simulation analysis and experimental measurement. Specifically, the geometric dimensions and material properties of the detection coil are used to accurately calculate its self-inductance L through electromagnetic simulation software. D At the same time, combined with the simulation analysis of the material resistivity of the wire and the high-frequency skin effect, the internal resistance R D In addition, the actual electrical parameters of the detection coil are experimentally measured and verified by an impedance analyzer or LCR meter to ensure the accuracy of the values ​​in Table 1.

[0179] AC voltage (AC excitation source) U AC The selection of frequency f can be determined by the following principles: first, ensure that the excitation frequency matches the operating frequency range of the detection coil and the electromagnetic characteristics of the heating component to be tested; second, while improving the detection sensitivity, avoid electromagnetic interference and excessive circuit loss caused by excessive frequency.

[0180] The first capacitor C can be adjusted according to the AC excitation source U AC The frequency f and the self-inductance L of the detection coil D Resonance matching is determined, please refer to the following formula for details:

[0181]

[0182] In the AC voltage (AC excitation source) U AC The frequency f is 3MHz and the detection coil self-inductance L D When the value is 10μH, the theoretical calculated value is about 177pF. At the same time, through simulation optimization and experimental debugging, the actual capacitance value is finally determined to achieve the best resonant performance. 2The gain factor of the resonant amplifier circuit can be adjusted according to the desired gain factor. e You can use LRB521S-40T1G model, the third capacitor C e The resistance value is 10kΩ, the second capacitor C e The capacitance value is 200nF.

[0183] The inventors' research also found that for induction heating products of smoking devices, heating components of different sizes, materials and shapes can be attributed to the different effects of the heating components on the equivalent impedance (including equivalent self-inductance and equivalent internal resistance) of the detection coil; and for induction heating products of cigarettes, in addition to the parameters of the heating components themselves (size, material, shape), the different positions of the heating components relative to the detection coil can also be attributed to the influence of the heating components on the equivalent impedance of the detection coil.

[0184] 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 detection device for a heating component, wherein the heating component is arranged in an electromagnetic induction aerosol generating product, characterized in that: include: A base is arranged in a horizontal direction; a clamping mechanism, fixed to the base and used to clamp the aerosol generating product; A PCB board is arranged at an angle with the horizontal direction and fixed to the base. A detection circuit and a detection coil are arranged on the PCB board. The detection circuit is used to sense the electromagnetic signal of the detection coil. The electromagnetic signal is used to determine the consistency of the equivalent impedance of the heating component.

2. The detection device according to claim 1, characterized in that Also includes: A rotating mechanism and a turntable, wherein the rotating mechanism comprises a first shell, wherein a transmission shaft and a rotating shaft are arranged in the first shell, wherein the transmission shaft is arranged along the horizontal direction and can be driven to rotate, wherein a worm is sleeved and fixed on the transmission shaft, wherein the rotating shaft is arranged along the vertical direction, wherein a worm wheel is sleeved and fixed on the rotating shaft, wherein the worm is meshed with the worm wheel, wherein one end of the rotating shaft away from the base is fixed to the turntable, and wherein the clamping mechanism is fixed to the turntable.

3. The detection device according to claim 2, characterized in that: The clamping mechanism includes a second shell, which is fixed to the turntable and has a bidirectional threaded rod inside. Both ends of the bidirectional threaded rod are respectively provided with movable parts. By rotating the bidirectional threaded rod, the movable parts can move relative to or opposite to each other to clamp or release the aerosol generating product.

4. The detection device according to claim 3, characterized in that: The movable portion extends along the vertical direction, and a clamping portion is fixed to one end away from the base. A recess is provided on the clamping portion, and the recess is used to clamp the aerosol generating product.

5. The detection device according to claim 2, characterized in that: Also includes: The telescopic mechanism extends along the vertical direction and is used to adjust the position of the heating component in the vertical direction. One end of the telescopic mechanism is fixed to the base, and the other end of the telescopic mechanism is fixed to the first shell.

6. The detection device according to claim 1, characterized in that: The detection coil is a planar detection coil, and the planar detection coil is fixed on the PCB board by printing.

7. The detection device according to claim 1, characterized in that: The electromagnetic signal is a voltage signal, and the detection circuit includes a resonant amplifier circuit for determining the AC voltage amplified signal of the detection coil, and the AC voltage amplified signal is used to determine the consistency of the equivalent impedance of the heating component. The resonant amplifier circuit includes a first inductor, a first resistor and a first capacitor, wherein the first inductor and the first resistor come from the connected detection coil.

8. The detection device according to claim 7, characterized in that: The detection circuit also includes a rectifier circuit, a filter circuit and / or an analog-to-digital conversion unit, wherein the rectifier circuit is used to convert the AC voltage amplification signal into a DC voltage amplification signal, the filter circuit is used to filter the DC voltage amplification signal, and the analog-to-digital conversion unit is used to convert the filtered analog voltage signal into a digital voltage signal, and the digital voltage signal is used to determine the consistency of the equivalent impedance of the heating component.

9. The detection device according to claim 8, characterized in that: The resonant amplifier circuit includes a series resonant amplifier circuit, and the series resonant amplifier circuit includes an AC voltage, the first inductor, the first resistor, the first capacitor, a second resistor and an amplifier element, wherein one end of the second resistor is connected to the AC voltage, the other end of the second resistor is connected to the inverting input end of the amplifier element and one end of the detection coil, the other end of the detection coil is connected to the output end of the amplifier element through the first capacitor, and the non-inverting input end of the amplifier element is grounded, or, The resonant amplifier circuit includes a parallel resonant amplifier circuit, which includes an AC voltage, the first inductor, the first resistor, the first capacitor, the second resistor, an amplifier element and a feedback resistor, wherein the detection coil, the first capacitor and the feedback resistor are connected in parallel with each other, one end of the second resistor is connected to the AC voltage, the other end of the second resistor is connected to the inverting input end of the amplifier element, one end of the feedback resistor, one end of the first capacitor and one end of the detection coil, the other end of the detection coil is connected to the output end of the amplifier element, and the non-inverting input end of the amplifier element is grounded.

10. The detection device according to claim 1, characterized in that: The detection device satisfies at least one or more of the following conditions: The clamping mechanism also includes an operating portion, which is disposed outside the second housing and fixed to the bidirectional threaded rod; The rotating mechanism also includes a motor, which is fixed outside the first housing and is used to drive the transmission shaft to rotate; The bottom surfaces of the bases are respectively provided with support parts, and the bottom ends of the support parts are provided with anti-slip parts; The base is provided with an operation panel for an operator to input instructions or output results to the operator.

11. A method for operating a detection device according to any one of claims 1 to 10, characterized in that: include: After placing the aerosol generating product into the clamping mechanism, rotating the operating part to clamp the aerosol generating product; adjusting the telescopic mechanism and / or the rotating mechanism so that the magnetic flux of the heating component and the detection coil disposed in the aerosol generating article exceeds a preset threshold; Input a command to the operation panel to determine the electromagnetic signal of the detection coil.

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