Capacitive coding electronic cigarette system and cartridge and rod thereof

Abstract

The utility model relates to a kind of capacitor coding electronic cigarette system and its cartridge, cigarette rod, including cartridge and cigarette rod, and the outer wall of cartridge is equipped with multiple coding areas, and coding area is equipped with coding dielectric material;Cigarette rod includes capacitor digital conversion circuit, processing module, the cartridge for inserting cartridge, and the capacitor detection module being set in cartridge, capacitor detection module includes multiple electrode units being arrayed, at least two electrode units and the detection matching relationship of at least two coding areas on the outer wall of cartridge is formed, and cartridge is provided with elastomer, and elastomer is structured as being compressed to change to eliminate or reduce air gap between coding area and corresponding electrode unit due to assembly tolerance when cartridge is inserted in place;Capacitor digital conversion circuit is respectively coupled each electrode unit, and processing module is coupled capacitor digital conversion circuit.

Description

Technical Field

[0001] This utility model relates to the field of electronic cigarette technology, and in particular to a capacitive coding electronic cigarette system and its cartridge and device. Background Technology

[0002] In existing technologies, anti-counterfeiting solutions for e-cigarette products involve embedding a dedicated authentication chip inside the cartridge. The e-cigarette device communicates with this chip to complete authentication, preventing the use of non-original or counterfeit cartridges and ensuring product safety and user experience. Related technologies include CN119655508A and US20250152876A1. The main drawback of this type of technology is cost.

[0003] In a broader technological field, low-cost solutions exist for encoding and identification using patterned electrodes, as disclosed in patents such as JP1995200761A and US5949060A. Encoding and identification based on capacitance is feasible for preventing cross-compatibility in e-cigarette cartridges. However, in actual development, due to unavoidable assembly tolerances between the cartridge and the e-cigarette device, an air gap forms between the outer wall of the cartridge and the inner wall of the device after insertion. This air gap affects the accuracy of capacitance detection and the consistency of data across multiple measurements, leading to a decline in the reliability of encoding authentication and even misjudgments. Utility Model Content

[0004] This invention aims to solve the problem that the air gap between the cartridge and the device affects the accuracy and consistency of capacitor detection when using capacitors for coding authentication.

[0005] To achieve the above objectives, this utility model provides a capacitive coding electronic cigarette system, including a cartridge and a device. The cartridge has multiple coding areas on its outer wall, each corresponding to a coding data bit. Some or all of the coding areas contain a coding dielectric material with a dielectric constant different from that of the cartridge's outer wall substrate. The arrangement of each coding area and its coding dielectric material constitutes the coding sequence of the cartridge. The device includes a capacitance-to-digital conversion circuit, a processing module, a housing for inserting the cartridge, and a capacitive detection module disposed in the housing for detecting the coding areas. The capacitive detection module includes components arranged in an array... At least two electrode units are configured to form a matching relationship for detection with at least two preset coding areas on the outer wall of the cartridge. The cartridge body is provided with an elastomer, which is constructed to deform under pressure when the cartridge is inserted to eliminate or reduce the air gap between the coding area and the corresponding electrode unit due to assembly tolerance. The capacitance-to-digital conversion circuit is coupled to each electrode unit to measure the capacitance signal corresponding to the electrode unit. The processing module is coupled to the capacitance-to-digital conversion circuit and configured to identify the code value in the coding area based on the capacitance signal for matching and authentication.

[0006] This invention replaces traditional chip authentication with capacitor encoding authentication, reducing the cost of preventing cross-contamination. At the same time, by setting up an elastic structure, it effectively reduces or even eliminates air gaps caused by assembly tolerances, ensuring the stability and accuracy of capacitor detection. This achieves highly reliable cartridge authentication at low cost.

[0007] The electronic cigarette system of this utility model also includes the following auxiliary technical solutions:

[0008] Furthermore, the elastomer is disposed on the chamber body at the position corresponding to the electrode unit.

[0009] In one implementation, the elastomer is an elastic material layer, and the electrode unit of the capacitive detection module is disposed on the elastic material layer, protruding from the inner wall of the cartridge when the cartridge is not inserted. When the cartridge is inserted, the elastic material layer deforms under pressure, causing the electrode unit to directly or indirectly contact and adhere tightly to the outer wall of the cartridge. Furthermore, the electrode unit is arranged in the form of a flexible thin film on the front surface of the elastic material layer facing the outer wall of the cartridge. In this design, the electrode unit is directly disposed on the elastic material layer to form a thin film structure with better adhesion. When the cartridge is inserted, the elastic material layer deforms as a whole, causing all electrode units to adhere tightly to the outer wall of the cartridge, reducing or even eliminating air gaps and improving the consistency of capacitance signals at each detection point.

[0010] Furthermore, the inner wall of the hopper has perforated windows, and the elastic material layer is disposed within these perforated windows as part of the inner wall of the hopper. The elastic material layer and the perforated windows are sealed and fixed together by connectors. This nested window design facilitates the achievement of a sufficient thickness for the elastic material, increasing its elastic deformation capacity. The elastic material becoming part of the inner wall of the hopper achieves a compact structure.

[0011] Furthermore, the connector is made of an elastic material; and / or, the connector is integrally formed with the elastic material layer and the perforated window through a molding process; and / or, the connector serves as a smooth transition from the edge of the flexible film to the edge of the perforated window.

[0012] The sealing and fixing of the elastic connector, as well as the integrated and smooth transition design, not only ensures the stability of the elastic material layer, but also enhances the deformation capacity through the elasticity of the connector itself. At the same time, the smooth design avoids problems with insertion and removal.

[0013] Furthermore, the rear surface of the elastic material layer abuts against a support member that is fixed relative to the internal components of the cigarette rod, providing stable support for deformation and ensuring reliability for repeated use. Furthermore, the support member is an elastic material filled between the elastic material layer and the internal components of the cigarette rod, and the elasticity of the elastic material layer is superior to that of the support member. By using a support member with slightly weaker elasticity, support is achieved while avoiding excessive resistance to the micro-deformation of the elastic material layer towards the support member, thus improving reliability.

[0014] As another implementation, the elastomer comprises multiple independent bulges protruding from the inner wall of the chamber, each bulge corresponding to the position of each electrode in the electrode unit. The bulges are constructed from a flexible dielectric material or a flexible conductive material covered with an insulating layer. When the cartridge is inserted, the bulges deform under pressure, filling the assembly gap between the coding area and the corresponding electrode. The coding dielectric material forms a stable capacitive coupling with the corresponding electrode unit through the deformed bulges. This discrete bulge design, where each bulge is independent and acts independently on one electrode point, avoids mutual interference. The high dielectric constant of the bulges forms a stable capacitive coupling between the electrode and the coding area, ensuring the stability and accuracy of the capacitive detection.

[0015] Furthermore, the capacitive detection module is mounted on a circuit board on the outer wall of the chamber, and the bulge is fixed to the electrode surface through the side wall of the chamber. The bulge is pressed onto the circuit board through the chamber housing; and / or, the bulge is bonded to the circuit board to achieve structural reliability.

[0016] As other improvements, each electrode unit is composed of at least one electrode forming a self-capacitance, resulting in a simplified structure; or each electrode unit is composed of at least two electrode pairs forming mutual capacitance, achieving better discrimination accuracy based on mutual capacitance characteristics; or the capacitance detection module includes multiple point electrodes arranged in an array; the multiple point electrodes are divided into several intersecting rows and columns, with electrodes in the same row coupled to each other as row electrodes, and electrodes in the same column coupled to each other as column electrodes, wherein the intersection points constitute the electrode unit; the capacitance-to-digital conversion circuit is coupled to each row electrode and column electrode respectively through a switch array, and is configured to measure the capacitance signal at each intersection point by scanning rows and columns. This matrix scanning structure greatly reduces the number of required CDC channels and physical leads, meeting the needs of scenarios with a large number of coding areas.

[0017] As another improvement, the relative permittivity of the coding dielectric materials set in each coding area is the same to achieve binary coding; or, the relative permittivity of the coding dielectric materials set in at least two coding areas is different to achieve multi-base coding, thereby improving coding complexity and space utilization.

[0018] As another improvement, the positions of the at least two electrode units correspond one-to-one with the positions of at least two pre-set coding areas on the outer wall of the cartridge.

[0019] A cartridge for the aforementioned capacitively coded cartridge system is also provided. The outer wall of the cartridge is provided with multiple coding areas, each coding area corresponding to a coding data bit. Some or all of the coding areas are provided with a coding dielectric material whose dielectric constant is different from that of the cartridge outer wall substrate. The arrangement of each coding area and its coding dielectric material constitutes the coding sequence of the cartridge. The coding sequence is configured to be capacitively read and authenticated by the electrode unit of the cartridge under the deformation of the elastic body of the cartridge chamber in the system.

[0020] A cigarette holder is also provided for identifying the aforementioned cigarette cartridges. The cigarette holder includes: a housing for inserting the cigarette cartridge; a capacitive detection module disposed in the housing, including at least two electrode units arranged in an array, the at least two electrode units being configured to form a detection matching relationship with at least two preset coding areas on the outer wall of the cigarette cartridge; a capacitance-to-digital conversion circuit coupled to each electrode unit for measuring the capacitance signal corresponding to the electrode unit; and a processing module coupled to the capacitance-to-digital conversion circuit, configured to identify the code value in the coding area based on the capacitance signal and perform matching authentication; wherein, an elastic body is disposed in the housing corresponding to the position of the electrode unit, the elastic body being constructed to deform under pressure when the cigarette cartridge is inserted into place to eliminate or reduce the air gap between the coding area and the corresponding electrode unit caused by assembly tolerance. Attached Figure Description

[0021] Figure 1 A schematic diagram of the overall assembly of the electronic cigarette system in Embodiment 1 of this utility model is provided.

[0022] Figure 2 A schematic diagram of a smoke cartridge with dielectric material disposed thereon is given.

[0023] Figure 3a A schematic diagram of a self-capacitance electrode unit is given. Figure 3b A schematic diagram of the mutual capacitance electrode unit is given. Figure 3c A schematic diagram of mutual capacitance detection using row and column electrode arrays is provided.

[0024] Figure 4 A schematic diagram of the overall assembly of the electronic cigarette system in Embodiment 2 of this utility model is provided.

[0025] Figure 5 The positional correspondence between the bulge, the electrode, and the detection electrode unit in Example 2 is given. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0027] Example 1

[0028] See Figure 1 The capacitive coding electronic cigarette system of this embodiment includes a cartridge 100 and a cigarette holder 200.

[0029] See Figure 2 The outer wall of the cartridge 100 is a one-piece injection molded matrix structure. The matrix material is a conventional plastic, such as ABS or PC, with a low dielectric constant, typically between 2 and 4. Multiple coding areas 101 are provided on the outer wall of the cartridge 100, each coding area 101 corresponding to a binary or higher-radius coding data bit.

[0030] Dielectric material is provided in part or all of the coding area 101. The dielectric material includes, but is not limited to, strontium titanate, barium titanate, barium strontium titanate, copper oxide perovskite, lead zirconate titanate, etc., and is formed on the outer wall of the cartridge 100 by spraying, printing, laser engraving or bonding (adhesive).

[0031] To ensure the generation of a significant and distinguishable capacitance signal, the selected dielectric material is made of a material with a dielectric constant significantly different from that of the base material, and its coupling efficiency with the electrodes of the electrode unit of the cigarette holder 200 is higher than that of the outer wall base material of the cartridge 100. Specifically, the dielectric constant of the dielectric material 220 is much higher than that of the outer wall base material of the cartridge 100, at least three times higher, forming a high dielectric constant.

[0032] The dielectric materials in each coding area 101 can be the same, forming a binary code. Alternatively, the relative permittivity of the coding dielectric materials in at least two coding areas can be different, forming a ternary or more base code. For the use of two or more dielectric materials, the difference in relative permittivity between the different materials must be at least twice. The arrangement of each coding area 101 and its coding dielectric material constitutes the unique coding sequence of the cartridge.

[0033] See Figure 1 The e-cigarette device 200 includes a housing 201 for inserting a cartridge 100, a capacitor-to-digital converter (CDC), and a processing module (MCU). The housing 201 has a cylindrical structure, with the top serving as the insertion inlet / outlet. On the inner wall of the housing 201, a capacitive detection module is positioned corresponding to the alignment of the cartridge 100 with the coding area 101 after insertion. See [link to details]. Figure 3a ,3b 3c, The capacitive detection module includes multiple electrode units arranged in an array, wherein at least two electrode units form a matching relationship with at least two preset coding areas 101 on the outer wall of the cartridge for detection. As an optional implementation, specifically, the positions of at least two electrode units are configured to correspond one-to-one with the positions of at least two preset coding areas on the outer wall of the cartridge.

[0034] Each electrode unit can be an independent electrode 202 that constitutes a self-capacitance, such as... Figure 3a As shown, the CDC outputs an excitation signal to electrode 202, which is then received by the electrode itself, forming a self-capacitance electrode 202. Self-capacitance has a large detection distance but slightly weaker anti-interference capability. An electrode unit can also be a pair of mutually capacitive electrodes consisting of two electrodes 202, such as... Figure 3b As shown, the CDC outputs an excitation signal to one of the electrodes 202 and receives input from the other electrode 202. The electrode pairs form mutual capacitance, achieving better discrimination accuracy based on the mutual capacitance characteristics. A more preferred arrangement of the electrode units is as follows: Figure 3c As shown, the capacitive detection module includes multiple dot electrodes 202 arranged in an array to form row-column mutual capacitance. The dot electrodes 202 are preferably rhomboid electrodes to achieve maximum area. The multiple dot electrodes 202 are divided into several intersecting rows (emitting electrodes a1, a2, a3…) and several columns (receiving electrodes b1, b2, b3…). Emitting electrodes in the same row are electrically connected to each other, and receiving electrodes in the same column are electrically connected to each other. Each intersection point between the row and column electrodes constitutes a mutual capacitance detection electrode unit, corresponding to a coding area on the cartridge, used to detect the sprayed area. The sprayed area is divided into an unsprayed area (c1) and a sprayed area (c2, c3, c4…). For example, corresponding to multi-level code areas with different dielectric materials, the sprayed area includes a low dielectric constant sprayed area (c2), a medium dielectric constant sprayed area (c3), and a high dielectric constant sprayed area (c4), which can output 4*K distributions, where K is the number of electrode units.

[0035] The capacitance-to-digital converter (CDC) uses Δ-Σ modulation to directly convert the measured capacitance value into a digital value by repeatedly charging and discharging the capacitor under test and comparing it with a reference capacitance (see US Patent Number: 5,134,401), improving the measurement sensitivity to the 1ff level. In operation, each electrode unit is coupled via a switch array to measure the capacitance value (self-capacitance or mutual capacitance) corresponding to each electrode unit. A processing module is coupled to the CDC and receives the measured capacitance signal. The processing module is configured to identify the code value within each coded region based on the received capacitance signal.

[0036] In this invention, the chamber is provided with an elastic body, which is positioned at the corresponding electrode unit's chamber location. As an example of the elastic body being located at the corresponding electrode unit's chamber location, see... Figure 1 The electrode unit is attached to the front surface of the elastic material layer 203 in the form of a flexible circuit board or a flexible thin film 2031. The elastic material layer 203 is preferably a material with high resilience and wear resistance, such as soft foam or rubber.

[0037] The inner wall of the chamber 201 is a one-time injection molded structure, with perforated windows that match the shape of the elastic material layer 203. The elastic material layer 203 is sealed and fixed in the perforated windows by connectors 204, forming a smooth composition of the inner wall of the chamber 201. The connectors 204 serve as a smooth transition from the edge of the flexible film to the edge of the perforated windows, connecting the FPC and the one-time injection molded structure. Furthermore, the connectors 204 are also made of highly elastic material and are integrally formed with the chamber 201 through secondary injection molding.

[0038] When the cartridge 100 is not inserted, the elastic material layer 203 and the electrode unit thereon protrude slightly from the inner wall surface of the chamber 201.

[0039] When the cartridge 100 is inserted into the chamber 201 of the cigarette holder 200 and is in place, the outer wall of the cartridge 100 presses against the elastic material layer 203, causing it to undergo elastic deformation. This causes all the electrode units on its surface to fit tightly against the outer wall of the cartridge 100, thereby reducing or even eliminating the air gap formed between the coding area 101 and the electrode 202 due to assembly tolerances.

[0040] Furthermore, a support member 205 is provided on the rear surface of the elastic material layer 203. The support member 205 is made of a fixing foam that is harder than the elastic material layer 203 but still has a certain degree of elasticity, and the support member 205 is relatively fixed to the internal components of the cigarette rod 200.

[0041] The elastic material layer 203 can also be located in a compartment position that does not correspond to the electrode unit. For example, the electrode unit may be located on one side of the compartment 201, and the elastic material layer may be located on the other side. When the cartridge 100 is inserted into the compartment 201 of the tobacco stick 200 and is in place, the elastic material layer 203 deforms and compresses the cartridge 100 to move to the other side, so that the electrode unit is in close contact with the coding area 101. It should be understood that the positions of the elastic material layer 203 and the electrode unit do not necessarily need to be aligned. For example, in other possible variations, multiple elastic material layers 203 can be provided, distributed on the other side of the compartment 201, and located above and below the electrode unit, which similarly forces the cartridge 100 to move in the direction of being in close contact with the electrode unit.

[0042] Example 2

[0043] Example 2 provides another way to implement an elastomer, based on Example 1.

[0044] See Figure 4 , Figure 5 In this embodiment, the elastomer consists of multiple independent bulges 301 protruding from the inner wall of the chamber 300. The position of each bulge 301 corresponds one-to-one with the position of each electrode 303 of each electrode unit 302 of the capacitive detection module. The bulges 301 are made directly from a flexible high-dielectric-constant material, or are composed of a flexible conductive body covered with an insulating coating.

[0045] The electrode unit 302 of the capacitive detection module is mounted on the circuit board 304, which is fixed to the outer wall of the chamber 301. The side wall of the chamber 301 has a through hole that allows the bulge 301 to pass through. The base of the bulge 301 is pressed against the housing of the chamber 301 itself or fixed to the corresponding electrode surface on the circuit board 304 by adhesive.

[0046] Before the cartridge 100 is inserted, the bulge 301 protrudes from the inner wall of the housing 301. When the cartridge 100 is inserted, the bulge 301 contacts the outer wall of the cartridge and deforms under pressure. The deformed bulge 301 fills the assembly gap between the coding area 101 and the corresponding electrode unit 302, ensuring that the coding dielectric material 102 forms a stable capacitive coupling with the electrode unit 302 through the bulge 301. Each bulge 301 is independent of each other to avoid signal crosstalk.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the essence and scope of the technical solutions of this utility model.

Claims

1. A capacitively coded electronic cigarette system, comprising a cartridge and a cigarette holder, characterized in that: The outer wall of the cartridge is provided with multiple coding areas, each coding area corresponds to a coding data bit, and some or all coding areas are provided with coding dielectric material with a dielectric constant different from that of the cartridge outer wall substrate. The arrangement of each coding area and its coding dielectric material constitutes the coding sequence of the cartridge. The cigarette holder includes a capacitor-to-digital converter circuit, a processing module, a housing for inserting a cigarette cartridge, and a capacitive detection module disposed in the housing for detecting the coding area. The capacitive detection module includes at least two electrode units arranged in an array. The at least two electrode units are configured to form a matching relationship with at least two pre-set coding areas on the outer wall of the cigarette cartridge for detection. The housing is provided with an elastic body, which is constructed to deform under pressure when the cigarette cartridge is inserted into place to eliminate or reduce the air gap between the coding area and the corresponding electrode unit caused by assembly tolerance. The capacitance-to-digital conversion circuit is coupled to each electrode unit to measure the capacitance signal corresponding to the electrode unit. The processing module is coupled to the capacitance-to-digital conversion circuit and is configured to perform matching authentication based on the code value in the encoding area identified by the capacitance signal.

2. The capacitive coding electronic cigarette system according to claim 1, characterized in that: The elastomer is an elastic material layer. The electrode unit of the capacitive detection module is disposed on the elastic material layer and protrudes from the inner wall of the chamber when the cartridge is not inserted. When the cartridge is inserted, the elastic material layer is deformed under pressure, causing the electrode unit to directly or indirectly contact and adhere tightly to the outer wall of the cartridge.

3. The capacitive coding electronic cigarette system according to claim 2, characterized in that: The electrode unit is arranged in the form of a flexible thin film on the front surface of the elastic material layer facing the outer wall of the cartridge.

4. The capacitive coding electronic cigarette system according to claim 3, characterized in that: The inner wall of the hopper has a perforated window, and the elastic material layer is placed in the perforated window as a component of the inner wall of the hopper. The elastic material layer and the perforated window are sealed and fixed together by a connector.

5. The capacitive coding electronic cigarette system according to claim 4, characterized in that: The connector is made of an elastic material; And / or, the connector is integrally formed with the elastic material layer and the hollow window through a molding process; And / or, the connector serves as a smooth transition from the edge of the flexible film to the edge of the cutout window.

6. The capacitive coding electronic cigarette system according to claim 4, characterized in that: The rear end surface of the elastic material layer abuts against a support member that is fixed relative to the internal components of the cigarette rod.

7. The capacitive coding electronic cigarette system according to claim 6, characterized in that: The support member is an elastic material filled between the elastic material layer and the internal components of the cigarette rod, and the elasticity of the elastic material layer is better than that of the support member.

8. The capacitive coding electronic cigarette system according to claim 1, characterized in that: The elastomer consists of multiple independent bulges protruding from the inner wall of the chamber, with each bulge corresponding to the positional distribution of each electrode of the electrode unit; The bulge is constructed from a flexible dielectric material or a flexible conductive material covered with an insulating layer. The bulge protrudes from the inner wall of the cartridge. When the cartridge is inserted into place, the bulge deforms under pressure to fill the assembly gap between the coding area and the corresponding electrode. The coding dielectric material forms a stable capacitive coupling with the corresponding electrode unit through the deformed bulge.

9. The capacitive coding electronic cigarette system according to claim 8, characterized in that: The capacitive detection module is mounted on a circuit board on the outer wall of the chamber, and the bulge passes through the side wall of the chamber and is fixed to the electrode surface.

10. The capacitive coding electronic cigarette system according to claim 9, characterized in that: The bulge is pressed onto the circuit board through the housing; And / or, the bulge is bonded to the circuit board.

11. The capacitive coding electronic cigarette system according to claim 1, characterized in that: Each electrode unit is constructed by at least one electrode that constitutes a self-capacitance; or Each electrode unit is composed of at least two electrode pairs that form mutual capacitance; or The capacitive detection module includes multiple point electrodes arranged in an array; the multiple point electrodes are divided into several intersecting rows and columns, with electrodes in the same row coupled to each other as row electrodes, and electrodes in the same column coupled to each other as column electrodes, wherein the intersection points constitute the electrode unit; the capacitance-to-digital conversion circuit is coupled to each row electrode and column electrode respectively through a switch array, and is configured to measure the capacitance signal at each intersection point by scanning rows and columns.

12. The capacitive coding electronic cigarette system according to claim 1, characterized in that: The relative permittivity of the coded dielectric material set in each coded area is consistent; Alternatively, the relative permittivity of the coded dielectric materials set in at least two coded regions is different.

13. The capacitive coding electronic cigarette system according to claim 1, characterized in that: The positions of the at least two electrode units correspond one-to-one with the positions of the at least two pre-set coding areas on the outer wall of the cartridge.

14. The capacitive coding electronic cigarette system according to claim 1, characterized in that: The elastomer is positioned on the chamber body at the location corresponding to the electrode unit.

15. A cartridge for use in a capacitively coded cartridge system as described in any one of claims 1-14, characterized in that: The outer wall of the cartridge is provided with multiple coding areas, each coding area corresponds to a coding data bit, and some or all coding areas are provided with coding dielectric material with a dielectric constant different from that of the cartridge outer wall substrate. The arrangement of each coding area and its coding dielectric material constitutes the coding sequence of the cartridge. The encoded sequence is configured to be capacitively read and authenticated by the electrode unit of the tobacco stick under the deformation of the elastic body of the tobacco stick chamber in the system.

16. A cigarette holder for identifying the cigarette cartridge as claimed in claim 15, characterized in that, The cigarette holder includes: The housing is used to insert the e-cigarette cartridge; A capacitive detection module is disposed in the chamber and includes at least two electrode units arranged in an array. The at least two electrode units are configured to form a matching relationship with at least two preset coding areas on the outer wall of the cartridge for detection. A capacitance-to-digital converter circuit is used to couple each electrode unit to measure the capacitance signal corresponding to the electrode unit. The processing module, coupled with a capacitor-to-digital converter circuit, is configured to identify the code value in the encoding area based on the capacitor signal and perform matching authentication. The chamber is provided with an elastic body at the position corresponding to the electrode unit. The elastic body is configured to deform under pressure when the cartridge is inserted into place, so as to eliminate or reduce the air gap between the coding area and the corresponding electrode unit caused by assembly tolerance.

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