Electronic smoking set
The electronic smoking device employs a capacitance detection system with multiple sensing elements to enhance puff counting accuracy, addressing the inaccuracy of existing sensors and enabling intelligent heating control and user customization.
Patent Information
- Application Number
- CN202323364464.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-07
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2033-12-07
AI Technical Summary
Heat-not-burn electronic cigarettes face inaccurate puff detection due to the complexity of existing temperature and airflow sensors, affecting user experience.
An electronic smoking device uses a capacitance detection component with multiple capacitive sensing elements to accurately count puffs by monitoring capacitance value changes, including a first capacitive sensing element offset in the cavity, a second element for temperature compensation, and a third element for shielding, with a control circuit determining puff counts based on these signals.
The solution provides precise puff detection that is less affected by environmental factors, enabling intelligent control of heating and improving user experience through accurate puff counting and personalized customization.
Smart Images
Figure CN222129354U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of electronic cigarettes, and in particular to an electronic smoking device. Background Art
[0002] Electronic cigarettes are becoming more and more popular in the market due to their portability and large amount of smoke. Among them, heat-not-burn electronic cigarettes use electronic smoking devices to heat the cigarette to a temperature that atomizes the tobacco in the cigarette but is not high enough to burn. That is, the cigarette is baked without burning it, so that the cigarette can emit a taste similar to real cigarettes. In heat-not-burn electronic cigarettes, the number of puffs of the cigarette is very important to the user experience. At present, heat-not-burn electronic cigarettes on the market usually use temperature sensors or airflow sensors to detect the number of puffs of the cigarette, and the detection results are inaccurate and the structure is complex. Utility Model Content
[0003] In order to solve the above technical problems or at least partially solve the above technical problems, the utility model provides an electronic smoking device, the electronic smoking device comprising:
[0004] A smoking device housing, comprising a cigarette insertion port and a cavity connected to the cigarette insertion port, wherein the cavity is used to accommodate cigarettes;
[0005] A capacitance detection component, comprising a detection unit and a first capacitance sensing element; wherein the first capacitance sensing element is arranged in a position offset from the cigarette accommodating area in the cavity of the smoking device housing, and the detection unit is used to detect the capacitance value of the first capacitance sensing element and output a corresponding first capacitance detection signal; and
[0006] The control circuit is electrically connected to the detection unit, and the control circuit determines the number of puffs taken by the user on the cigarette in the smoking device housing based at least on the first capacitance detection signal output by the detection unit.
[0007] The electronic smoking device provided by the utility model sets a first capacitive sensing element in the cavity of the smoking device shell, and detects the capacitance value of the first capacitive sensing element by a detection unit. When the user smokes a cigarette in the smoking device shell, the capacitance value of the first capacitive sensing element will change, so that the control circuit can determine the number of puffs of the cigarette taken by the user according to the change in the capacitance value of the first capacitive sensing element. In this way, the flowing aerosol can change the self-capacitance of the first capacitive sensing element to detect the user's action of smoking the cigarette and count the number of puffs taken by the user. The detection result is not easily affected by the environment and has higher accuracy.
[0008] Optionally, the electronic smoking device further comprises a heating tube, wherein the heating tube is arranged in the cavity of the smoking device shell, the heating tube is tube-mounted, and has a accommodating cavity extending axially and connected to the cigarette insertion port of the smoking device shell, and the cigarette is partially accommodated in the accommodating cavity of the heating tube when accommodated in the cavity of the smoking device shell; the heating tube is electrically connected to the control circuit, and is used to heat the cigarette in the accommodating cavity under the control of the control circuit.
[0009] Optionally, the first capacitive sensing element is arranged between the cigarette insertion port of the smoking device housing and the heating tube.
[0010] Optionally, the first capacitive sensing element is annular, and the cigarette passes through the first capacitive sensing element when accommodated in the accommodating cavity.
[0011] Optionally, the capacitance detection component further includes a second capacitance sensing element, the second capacitance sensing element is annular, and the first capacitance sensing element and the second capacitance sensing element are coaxial and arranged from inside to outside at intervals; the detection unit is further used to detect the capacitance value of the second capacitance sensing element and output a corresponding second capacitance detection signal;
[0012] The control circuit determines the number of puffs taken by the user on the cigarette in the smoking device housing based on the first capacitance detection signal and the second capacitance detection signal output by the detection unit.
[0013] Optionally, the capacitance detection component also includes a third capacitance sensing element, which is annular, and the first capacitance sensing element, the second capacitance sensing element and the third capacitance sensing element are coaxial and coaxially spaced from the inside to the outside; wherein the third capacitance sensing element is grounded and is used to shield external electric fields.
[0014] Optionally, the control circuit further identifies the user's cigarette inserting operation and cigarette removing operation based on the first capacitance detection signal and the second capacitance detection signal output by the detection unit.
[0015] Optionally, the control circuit is used to obtain a capacitance value change-time curve of the first capacitance sensing element based on the first capacitance detection signal and the second capacitance detection signal, and determine that the user is inserting a cigarette into the electronic smoking device when a positive pulse with an amplitude greater than a first preset amplitude appears in the capacitance value change-time curve.
[0016] Optionally, after the control circuit determines that the user inserts a cigarette into the electronic smoking device, the heating tube heats the cigarette under the control of the control circuit.
[0017] Optionally, the control circuit is used to determine that the user is smoking a cigarette and count the number of puffs the user takes on the cigarette when a positive pulse with an amplitude greater than a second preset amplitude appears after the time from the cigarette insertion moment in the capacitance value change-time curve reaches a preset preheating time.
[0018] Optionally, the control circuit is used to determine that the user is pulling the cigarette out of the electronic smoking device when a negative pulse with an amplitude greater than a third preset amplitude appears in the capacitance value change-time curve.
[0019] Optionally, when the control circuit determines that the total heating time of the heating tube is equal to a first preset time, the heating tube stops heating under the control of the control circuit.
[0020] Optionally, when the control circuit determines that the number of puffs taken by the user is equal to a preset number, or determines that the interval between the current moment and the last time the user puffed on the cigarette is equal to a second preset time, the heating tube stops heating under the control of the control circuit.
[0021] Optionally, the detection unit includes a capacitive sensor chip, the capacitive sensor chip includes a first input terminal, a second input terminal, a third input terminal and a communication port, the first input terminal is electrically connected to the first capacitive sensing element, the second input terminal is electrically connected to the second capacitive sensing element, the third input terminal is electrically connected to the third capacitive sensing element, and the communication port is electrically connected to the control circuit; the capacitive sensor chip is used to detect the capacitance value of the first capacitive sensing element through the first input terminal, and output the corresponding first capacitance detection signal to the control circuit through the communication port, and is used to detect the capacitance value of the second capacitive sensing element through the second input terminal, and output the corresponding second capacitance detection signal to the control circuit through the communication port.
[0022] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Figure 1 This is a front view of the electronic smoking device provided by an embodiment of the utility model;
[0024] Figure 2 It is a schematic diagram of the internal structure of the electronic smoking device provided by the embodiment of the utility model;
[0025] Figure 3 yes Figure 2 The schematic diagram of the cross-sectional structure of the electronic cigarette device shown is taken along AA;
[0026] Figure 4 yes Figure 2 A schematic diagram of the circuit structure of a capacitance detection component in an electronic smoking device is shown;
[0027] Figure 5 This is a capacitance change-time curve provided by an embodiment of the utility model.
[0028] The following are the descriptions of the reference numerals:
[0029] Electronic smoking accessories 100
[0030] Smoking utensil housing 1
[0031] Capacitance detection component 2
[0032] Control circuit 3
[0033] The first capacitive sensing element 21
[0034] The second capacitive sensing element 22
[0035] The third capacitive sensing element 23
[0036] Detection unit 20
[0037] Cigarette socket 11
[0038] Cavity 12
[0039] Heating tube 4
[0040] Temperature sensor 5
[0041] Battery module 6
[0042] Accommodating chamber 41
[0043] Capacitive sensor chip U1
[0044] The first input terminal CS0
[0045] The second input terminal CS1
[0046] The third input terminal CS3
[0047] The first communication terminal SCL
[0048] The second communication terminal SDA
[0049] Cigarettes 200
[0050] Filter segment 201
[0051] Tobacco Section 202
[0052] The following specific implementation manner will illustrate the present invention in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION
[0053] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0054] In addition, the terms "first", "second", etc. in the specification of the utility model are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the utility model described here can be implemented in an order other than those illustrated or described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.
[0055] It should be noted that, in the absence of conflict, the features in the embodiments of the present invention may be combined with each other.
[0056] Please also read Figure 1 to Figure 4 The utility model provides an electronic smoking device 100 , which includes a smoking device housing 1 , a capacitance detection component 2 and a control circuit 3 .
[0057] The smoking device housing 1 has a cigarette insertion port 11 and a cavity 12 connected to the cigarette insertion port 11 , and the cavity 12 is used to accommodate the cigarette 200 .
[0058] The capacitance detection component 2 includes a detection unit 20 and a first capacitance sensing element 21. The first capacitance sensing element 21 is arranged at a position offset from the cigarette 200 accommodating area in the cavity 12 of the smoking device housing 1. The detection unit 20 is used to detect the capacitance value of the first capacitance sensing element 21 and output a corresponding first capacitance detection signal.
[0059] The control circuit 3 is electrically connected to the detection unit 20 , and the control circuit 3 determines the number of puffs taken by the user on the cigarette 200 in the smoking device housing 1 based at least on the first capacitance detection signal output by the detection unit 20 .
[0060] The electronic smoking device 100 provided by the utility model sets a first capacitive sensing element 21 in the cavity 12 of the smoking device shell 1, and detects the capacitance value of the first capacitive sensing element 21 through the detection unit 20. When the user smokes the cigarette 200 in the smoking device shell 1, the capacitance value of the first capacitive sensing element 21 will change, so that the control circuit 3 can determine the number of puffs of the cigarette 200 taken by the user according to the change of the capacitance value of the first capacitive sensing element 21. In this way, the flowing aerosol can change the characteristic of the self-capacitance of the first capacitive sensing element 21 to detect the user's action of smoking the cigarette 200 and count the number of puffs taken by the user. The detection result is not easily affected by the environment and has higher accuracy.
[0061] like Figure 2 As shown, in the embodiment of the utility model, the electronic cigarette device 100 further includes a heating tube 4, which is disposed in the cavity 12 of the cigarette device housing 1. The heating tube 4 is tube-shaped and has a receiving cavity 41 extending along the axial direction and communicating with the cigarette insertion port 11 of the cigarette device housing 1. When the cigarette 200 is received in the cavity 12 of the cigarette device housing 1, it is partially received in the receiving cavity 41 of the heating tube 4. The heating tube 4 is electrically connected to the control circuit 3 and is used to heat the cigarette 200 in the receiving cavity 41 under the control of the control circuit 3.
[0062] Specifically, the cigarette 200 includes a filter segment 201 and a tobacco segment 202 connected to the filter segment, wherein the tobacco segment 202 contains tobacco material and generates aerosol under the heating and baking of the heating tube 4, and the filter segment 201 is used to filter the aerosol flowing to the user's mouth under the user's inhalation. When the user inserts the cigarette 200 from the cigarette insertion port 11 of the cigarette housing 1 into the cavity 12, at least part of the tobacco segment 202 is accommodated in the accommodating cavity 41 of the heating tube 4, and at least part of the filter segment 201 extends from the cigarette insertion port 11 of the cigarette housing 1 for the user to inhale. Exemplarily, the heating tube 4 has openings at both ends in the axial direction, wherein the opening at one end close to the cigarette insertion port 11 is used for inserting the cigarette 200, and the opening at one end away from the cigarette insertion port 11 is used as an air inlet. The heating tube 4 includes a tube body and a heating element (not shown) wound around the tube body, and the heating element is used to heat and bake the tobacco segment 202 accommodated in the tube body. In some embodiments, the heating element includes a coil, and the coil is wound around the tube body. When working, the coil is energized and generates eddy currents with the tube body through electromagnetic induction, so that the portion of the tube body covered by the coil is heated, thereby heating and baking the tobacco segment 202 inside the tube body.
[0063] like Figure 2-Figure 3As shown, the first capacitive sensing element 21 is annular and is disposed between the cigarette insertion port 11 of the smoking device housing 1 and the heating tube 4. When the cigarette 200 is accommodated in the accommodating cavity 41, it passes through the first capacitive sensing element 21. Preferably, when the cigarette 200 is inserted into the bottom of the accommodating cavity 41, its filter segment 201 passes through the first capacitive sensing element 21. It is not difficult to understand that when the user does not inhale the cigarette 200, the filter segment 201 can block the aerosol generated by the tobacco segment 202 from flowing outward, so that the capacitance value of the first capacitive sensing element 21 will not be affected by the aerosol and will remain basically stable; when the user inhales the cigarette 200, the aerosol generated by the tobacco segment 202 will be inhaled into the filter segment 201, so that the capacitance value of the first capacitive sensing element 21 will be affected by the aerosol and will suddenly change, so that the control circuit 3 can accurately determine whether the user has taken the action of inhaling the cigarette 200 according to the change in the capacitance value of the first capacitive sensing element 21. In other embodiments, the first capacitive sensing element 21 and the second capacitive sensing element 22 can also be arranged in the accommodating cavity 41 of the heating tube 4, or arranged on the air inlet side of the heating tube 4, which is not limited here.
[0064] like Figure 3 As shown, in some embodiments, the capacitance detection component 2 further includes a second capacitance sensing element 22, the second capacitance sensing element 22 is annular, the first capacitance sensing element 21 and the second capacitance sensing element 22 are coaxial and arranged from inside to outside. The detection unit 20 is also used to detect the capacitance value of the second capacitance sensing element 22 and output a corresponding second capacitance detection signal to the control circuit 3.
[0065] The control circuit 3 determines the number of puffs taken by the user on the cigarette 200 in the smoking device housing 1 based on the first capacitance detection signal and the second capacitance detection signal output by the detection unit 20 , and identifies the user's operation of inserting and removing the cigarette 200 .
[0066] Exemplarily, the control circuit 3 can fit the correspondence between the change in capacitance value of the second capacitance sensing element 22 and the change in ambient temperature based on the second capacitance detection signal, and correct the capacitance detection value of the first capacitance sensing element 21 based on the correspondence, thereby eliminating the influence of ambient temperature on the capacitance value of the first capacitance sensing element 21, thereby improving the detection accuracy.
[0067] In some embodiments, the capacitance detection component 2 further includes a third capacitance sensing element 23, which is also annular, and the first capacitance sensing element 21, the second capacitance sensing element 22 and the third capacitance sensing element 23 are coaxial and arranged coaxially from the inside to the outside. The third capacitance sensing element 23 is solid copper and grounded, and as a shielding layer, it can shield the external interference electric field, thereby further improving the accuracy of the detection.
[0068] See also Figure 4 In the embodiment of the utility model, the detection unit 20 includes a capacitive sensor chip U1, the capacitive sensor chip U1 includes a first input terminal CS0, a second input terminal CS1, a third input terminal CS3 and a communication port, the first input terminal CS0 is electrically connected to the first capacitive sensing element 21, the second input terminal CS1 is electrically connected to the second capacitive sensing element 22, the third input terminal CS3 is electrically connected to the third capacitive sensing element 23, and the communication port is electrically connected to the control circuit 3. The capacitive sensor chip U1 is used to detect the capacitance value of the first capacitive sensing element 21 through the first input terminal CS0, and output the corresponding first capacitance detection signal to the control circuit 3 through the communication port, and is used to detect the capacitance value of the second capacitive sensing element 22 through the second input terminal CS1, and output the corresponding second capacitance detection signal to the control circuit 3 through the communication port. Wherein, the control circuit 3 and the capacitive sensor chip U1 can be arranged on the same circuit board.
[0069] The communication port is an I2C port, including a first communication terminal SCL and a second communication terminal SDA. The I2C terminal has strong versatility and good portability, and is convenient for realizing accurate data transmission.
[0070] The first capacitive sensing element 21, the second capacitive sensing element 22 and the third capacitive sensing element 23 are all capacitive detection Sensor FPC (Flexible Printed Circuit). The first capacitive sensing element 21 serves as a detection layer. The second capacitive sensing element 22 serves as a reference layer for temperature compensation of the capacitance detection value of the first capacitive sensing element 21. The third capacitive sensing element 23 serves as a shielding layer for shielding an external electric field. Since the first capacitive sensing element 21, the second capacitive sensing element 22 and the third capacitive sensing element 23 are correspondingly arranged at the periphery of the filter segment 201 of the cigarette 200 in the cavity 12 of the cigarette housing 1, the structure is simple and the occupied volume is very small, which is conducive to the miniaturization design of the electronic cigarette 100.
[0071] Furthermore, in an embodiment of the utility model, the control circuit 3 is used to obtain a capacitance value change-time curve of the first capacitance sensing element 21 according to the first capacitance detection signal and the second capacitance detection signal, and determine the number of puffs taken by the user on the cigarette 200 in the smoking device housing 1 according to the capacitance value change-time curve of the first capacitance sensing element 21, and identify the user's cigarette insertion 200 operation and cigarette removal 200 operation.
[0072] Specifically, when a positive pulse with an amplitude greater than a first preset amplitude appears in the capacitance value change-time curve, the control circuit 3 determines that the user is inserting a cigarette 200 into the electronic smoking device 100 .
[0073] The control circuit 3 is further used to control the heating tube 4 to heat the cigarette 200 after determining that the user inserts a cigarette into the electronic smoking device.
[0074] The control circuit 3 is also used to determine that the user is smoking a cigarette and count the number of puffs the user takes on the cigarette 200 when a positive pulse with an amplitude greater than a second preset amplitude appears after the time from the cigarette insertion moment in the capacitance value change-time curve reaches a preset preheating time.
[0075] The control circuit 3 is further configured to determine that the user is pulling the cigarette 200 out of the electronic smoking device 100 when a negative pulse with an amplitude greater than a third preset amplitude appears in the capacitance value change-time curve.
[0076] The first preset amplitude, the second preset amplitude and the third preset amplitude can all be determined through experiments.
[0077] Combine the following Figure 5 The working process of the electronic smoking device 100 is introduced in detail:
[0078] When working, the first capacitive sensing element 21 is energized to generate an electric field. When no cigarette is inserted into the heating tube 4, the electric field generated by the first capacitive sensing element 21 is stable, so that the capacitance value of the first capacitive sensing element 21 remains stable, that is, the capacitance value change of the first capacitive sensing element 21 is substantially zero. Figure 5 As shown, in the period of 0ms to 95ms, the capacitance change of the first capacitance sensing element 21 is substantially kept at 0. Figure 5 The ordinate in the capacitance change-time curve is the value obtained by amplifying the capacitance change of the first capacitance sensing element 21 .
[0079] When the user inserts the cigarette 200 into the heating tube 4, the electric field generated by the first capacitive sensing element 21 changes due to the high humidity of the tobacco segment 202, so that the capacitance value of the first capacitive sensing element 21 also changes suddenly. Figure 5 As shown, in the period of 95 ms to 189 ms, a pulse with an amplitude exceeding 5000 appears in the capacitance value change-time curve of the first capacitance sensing element 21 , and it can be determined that the user is inserting a cigarette 200 into the electronic smoking device 100 .
[0080] When the cigarette 200 is inserted into the bottom of the heating tube 4 and the position is fixed, the control circuit 3 controls the heating tube 4 to preheat the cigarette 200 so that the tobacco segment 202 generates aerosol. In the embodiment of the utility model, after determining that the preheating is completed, the control circuit 3 will calibrate the capacitance value change of the first capacitive sensing element 21 to zero. Figure 5 As shown, 471ms to 753ms is the preheating period. During the preheating period, as aerosol is generated, the capacitance value of the first capacitance sensing element 21 gradually increases. At 753ms, the preheating ends, and the capacitance value change of the first capacitance sensing element 21 is calibrated to zero. In the preheating period, the electronic cigarette device 100 can send a preheating reminder signal to remind the user that the electronic cigarette device 100 is preheating and not to inhale. Therefore, before the time from the user inserting a cigarette reaches a preset preheating time (for example, 10s), it means that the preheating has not ended, and the control circuit 3 will not detect and count the number of puffs. In this way, the insertion operation can be distinguished from the inhalation action.
[0081] After the time from the moment the user inserts the cigarette reaches the preset preheating time, since the change in the capacitance value of the first capacitance sensing element 21 has been calibrated to zero, if the user does not inhale the cigarette 200, the electric field generated by the power supply of the first capacitance sensing element 21 remains stable, so that the capacitance value of the first capacitance sensing element 21 remains stable, that is, the change in capacitance value remains basically zero.
[0082] When the user inhales the cigarette 200, the aerosol is inhaled by the user and flows through the filter segment 201 of the cigarette 200. Since the aerosol contains a certain amount of water, the electric field generated by the first capacitive sensing element 21 will change due to the influence of the aerosol during the process of the aerosol flowing through the filter segment 201, so that the capacitance value of the first capacitive sensing element 21 will also change suddenly. Figure 5As shown, positive pulses with amplitudes greater than the second preset amplitude appear in time periods such as 753ms-847ms, 1129ms-1223ms, 1505ms-1599ms, and 1881ms-1975ms. It can be determined that the user has inhaled the cigarette 200 during these time periods. In this way, the control circuit 3 can count the number of puffs of the cigarette 200 taken by the user.
[0083] When the user pulls the cigarette 200 out of the accommodating cavity 41, the electric field generated by the first capacitive sensing element 21 will change due to the influence of the tobacco segment 202, so that the capacitance value of the first capacitive sensing element will also change suddenly. Figure 5 As shown, in the period of 4889ms to 4983ms, a negative pulse with an amplitude greater than the third preset amplitude appears, and it can be determined that the user is pulling the cigarette 200 out of the electronic smoking device 100 .
[0084] In this way, the number of puffs of the cigarette 200 in the smoking device housing 1 by the user can be determined through the capacitance value change-time curve, and the user's operation of inserting and removing the cigarette 200 can be identified. In some embodiments, the control circuit 3 can control the heating tube 4 to stop heating according to the number of puffs of the user, which can not only realize intelligent control but also improve the safety of the product. Engineers can also obtain the smoking habits of different user groups by counting the number of puffs of users, and perform personalized customization for different user groups to meet the needs of different user groups.
[0085] In one embodiment, the control circuit 3 is further configured to control the heating tube 4 to stop heating when it is determined that the total heating time of the heating tube 4 is equal to a first preset time.
[0086] In another embodiment, the control circuit 3 is also used to control the heating tube 4 to stop heating when it is determined that the number of puffs taken by the user is equal to a preset number of puffs, or when it is determined that the interval between the current moment and the moment when the user last puffed on the cigarette 200 is equal to a second preset time length.
[0087] Optionally, the electronic cigarette device 100 may further include components such as a temperature sensor 5, a battery module 6, and a display module (not shown). The battery module 6 is used to provide energy for each module, and the temperature sensor 5 is disposed in the accommodating cavity 41 of the heating tube 4 to monitor the real-time temperature of the heating tube 4 and feed it back to the control circuit 3, thereby achieving real-time control of the heating temperature of the heating tube 4. The control circuit 3 may also control the display module to display information such as the number of puffs and abnormal alarm signals to the user.
[0088] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.
Claims
1. An electronic smoking device, characterized in that: include: A smoking device housing, comprising a cigarette insertion port and a cavity connected to the cigarette insertion port, wherein the cavity is used to accommodate cigarettes; A capacitance detection component, comprising a detection unit and a first capacitance sensing element; wherein the first capacitance sensing element is arranged in a position of the cavity of the smoking device housing that is offset from the cigarette accommodating area, and the detection unit is used to detect the capacitance value of the first capacitance sensing element and output a corresponding first capacitance detection signal; as well as The control circuit is electrically connected to the detection unit, and the control circuit determines the number of puffs taken by the user on the cigarette in the smoking device housing based at least on the first capacitance detection signal output by the detection unit.
2. The electronic smoking device according to claim 1, characterized in that: The electronic smoking device also includes a heating tube, which is arranged in the cavity of the smoking device shell. The heating tube is tube-mounted and has a accommodating cavity extending axially and connected to the cigarette insertion port of the smoking device shell. When the cigarette is accommodated in the cavity of the smoking device shell, it is partially accommodated in the accommodating cavity of the heating tube; the heating tube is electrically connected to the control circuit and is used to heat the cigarette in the accommodating cavity under the control of the control circuit.
3. The electronic smoking device according to claim 2, characterized in that: The first capacitive sensing element is arranged between the cigarette insertion port of the smoking device housing and the heating tube.
4. The electronic smoking device according to claim 3, characterized in that: The first capacitive sensing element is ring-shaped, and the cigarette passes through the first capacitive sensing element when accommodated in the accommodating cavity.
5. The electronic smoking device according to claim 4, characterized in that: The capacitance detection component further includes a second capacitance sensing element, the second capacitance sensing element is annular, and the first capacitance sensing element and the second capacitance sensing element are coaxial and arranged from inside to outside at intervals; the detection unit is also used to detect the capacitance value of the second capacitance sensing element and output a corresponding second capacitance detection signal; The control circuit determines the number of puffs taken by the user on the cigarette in the smoking device housing based on the first capacitance detection signal and the second capacitance detection signal output by the detection unit.
6. The electronic smoking device according to claim 5, characterized in that: The capacitance detection component also includes a third capacitance sensing element, which is annular, and the first capacitance sensing element, the second capacitance sensing element and the third capacitance sensing element are coaxial and arranged coaxially from the inside to the outside; wherein the third capacitance sensing element is grounded and is used to shield an external electric field.
7. The electronic smoking device according to claim 6, characterized in that: The detection unit includes a capacitive sensor chip, which includes a first input terminal, a second input terminal, a third input terminal and a communication port, wherein the first input terminal is electrically connected to the first capacitive sensing element, the second input terminal is electrically connected to the second capacitive sensing element, the third input terminal is electrically connected to the third capacitive sensing element, and the communication port is electrically connected to the control circuit; the capacitive sensor chip is used to detect the capacitance value of the first capacitive sensing element through the first input terminal, and output the corresponding first capacitance detection signal to the control circuit through the communication port, and is used to detect the capacitance value of the second capacitive sensing element through the second input terminal, and output the corresponding second capacitance detection signal to the control circuit through the communication port.