Patent Publication Number: US-2023157362-A1

Title: Smoking set and control method therefor

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     The present application claims priority to the Chinese Patent Application No. 2020102916412, filed on Apr. 14, 2020 and entitled “SMOKING SET AND CONTROL METHOD THEREFOR”, which is incorporated herein by reference in its entirety. 
     TECHNICAL FIELD 
     The present application relates to the technical field of smoking sets, and in particular relates to a smoking set and a control method therefor. 
     BACKGROUND 
     Smoking articles (such as cigarettes, cigars, etc.) burn tobacco during use to produce smoke. Attempts have been made to provide alternatives to these articles that burn tobacco by making products that release compounds without burning. Examples of such products are so-called heat-not-burn products, which release compounds by heating tobacco, rather than burning tobacco. 
     Patent publication No. CN209202153U discloses a low-temperature smoking set, which is opened or closed by an open/close switch, where when a smoke channel opening is in an open state, a power unit drives a sliding door to enable a smoking channel hole in the sliding door to be overlapped with the smoking channel opening; when the smoke channel opening is in a closed state, the power unit drives the sliding door to enable the smoke channel hole and the smoking channel opening to be staggered such that the sliding door closes the smoke channel opening. 
     This solution has a problem that heating needs to be started by pressing a key, the operation process of the smoking set is cumbersome, and the user experience is reduced. 
     SUMMARY 
     The present application provides a smoking set and a control method therefor, and aims to solve the problem that the existing smoking set is relatively cumbersome in operation process and the user experience is reduced. 
     One aspect of the present application provides a smoking set, including a cavity and a heater, where the heater is configured to heat a cigarette removably placed within the cavity to generate an aerosol for smoking, and further including: 
     a cover; 
     a driving apparatus, configured to drive the cover to move relative to the cavity, so as to open or cover the cavity; 
     a first detection apparatus, provided downstream of the cover, the first detection apparatus being configured to detect whether there is a cigarette to be inserted into the cavity, and if it is detected that there is a cigarette to be inserted into the cavity, output a cigarette insertion signal; and 
     a controller, configured to acquire the cigarette insertion signal, and control, according to the cigarette insertion signal, the driving apparatus to drive the cover to move relative to the cavity, so as to open the cavity such that the cigarette can be inserted into the cavity. 
     The other aspect of the present application provides a control method for a smoking set, including: 
     acquiring a cigarette insertion signal output by a first detection apparatus; and 
     controlling, according to the cigarette insertion signal, a driving apparatus to drive a cover to move relative to a cavity, so as to open the cavity such that the cigarette can be inserted into the cavity. 
     According to the smoking set and the control method therefor provided by the present application, when the detection apparatus detects that there is a cigarette to be inserted into the cavity, the driving apparatus can be controlled to drive the cover to move relative to the cavity, so as to open the cavity such that the cigarette can be inserted into the cavity. A user is not required to manually slide the cover to open the cavity, thereby simplifying the operation of the smoking set, and improving the user experience. 
    
    
     
       BRIEF DESCRIPTION OF DRAWINGS 
       One or more embodiments are illustrated by pictures in the corresponding accompanying drawings, which are not intended to limit the embodiments, in which elements having the same reference numerals represent similar elements, and the figures of the accompanying drawings are not intended to constitute a scale limitation unless specifically stated otherwise. 
         FIG.  1    is a schematic diagram of a smoking set according to an embodiment of the present application; 
         FIG.  2    is a schematic diagram of a cross section of a smoking set according to an embodiment of the present application; 
         FIG.  3    is a schematic diagram of a smoking set after an upper cover is removed according to an embodiment of the present application; 
         FIG.  4    is a partial enlarged schematic diagram of  FIG.  3   ; 
         FIG.  5    is a schematic diagram of a first detection apparatus according to an embodiment of the present application; 
         FIG.  6    is a schematic diagram of a smoking set after an upper cover, a front cover and a first detection apparatus are removed according to an embodiment of the present application; 
         FIG.  7    is a partial enlarged schematic diagram of  FIG.  6   ; 
         FIG.  8    is a schematic diagram of a driving apparatus according to an embodiment of the present application; 
         FIG.  9    is a schematic flowchart of a control method for a smoking set according to an embodiment of the present application; and 
         FIG.  10    is another schematic flowchart of a control method for a smoking set according to an embodiment of the present application. 
     
    
    
     DETAILED DESCRIPTION 
     To facilitate the understanding of the present application, the present application will be described in more detail below with reference to the accompanying drawings and specific implementation. It should be noted that when an element is referred to as being “fixed to” another element, it can be directly on the other element or one or more intervening elements may be present therebetween. When an element is referred to as being “connected” to another element, it can be directly connected to the other element or one or more intervening elements may be present therebetween. As used herein, the terms “upper,” “lower,” “left,” “right,” “inner,” “outer,” and the like are for illustrative purposes only. 
     Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs. The terms used in the specification of the present application is for the purpose of describing specific embodiments only and is not used to limit the present application. As used herein, the term “and/or” includes any and all combinations of one or more of associated listed items. 
     First Embodiment 
     As shown in  FIG.  1    to  FIG.  8   , the first embodiment of the present application provides a smoking set  10 . The smoking set  10  includes a heater  11 , a cavity  12 , a first detection apparatus  13 , a second detection apparatus  14 , a driving apparatus  15 , a cover  16 , a power supply apparatus  17 , a printed circuit board (PCB)  18  and a controller. 
     The heater  11  is configured to heat a cigarette removably placed within the cavity  12  to generate an aerosol for smoking. The cigarette includes an aerosol generation substrate for use with the smoking set  10  to volatilize at least one component of the aerosol generation substrate. 
     The aerosol generation substrate is a substrate capable of releasing volatile compounds that can form an aerosol. Such volatile compounds can be released by heating the aerosol generation substrate. The aerosol generation substrate may be solid or liquid or include solid and liquid components. The aerosol generation substrate can be loaded onto a carrier or support by means of adsorbing, coating, impregnating, or the like. 
     The aerosol generation substrate may include nicotine. The aerosol generation substrate may include tobacco, e.g., may include a tobacco-containing material containing volatile tobacco flavor compounds that are released from the aerosol generation substrate when heated. Preferably, the aerosol generation substrate may include a homogenized tobacco material, e.g., deciduous tobacco. The aerosol generation substrate may include at least one aerosol generation agent, which may be any suitable known compound or mixture thereof. When in use, the compounds or mixtures thereof facilitate stable formation of the aerosol, and are substantially resistant to thermal degradation at an operating temperature of an aerosol generation system. Suitable aerosol generation agents are well known in the art and include, but are not limited to: polyols, such as triethylene glycol, 1,3-butanediol and glycerol; esters of polyols, such as glycerol monoacetate, glycerol diacetate and glycerol triacetate; and fatty acid esters of monocarboxylic acid, dicarboxylic acid or polycarboxylic acid, such as dimethyldodecanedioate and dimethyltetradecanedioate. Preferably, the aerosol generation agent is polyhydric alcohol or a mixture thereof, such as triethylene glycol, 1,3-butanediol and most preferably glycerol. 
     The heater  11  may be in a central heating manner (being in contact with the aerosol generation substrate by the periphery of a heating body) or in a peripheral heating manner (the cylindrical heating body wrapping the aerosol generation substrate), and the heater can also heat the aerosol generation substrate by means of one or more of thermal conduction, electromagnetic induction, chemical reaction, infrared action, resonance, photoelectric conversion, and photothermal conversion to generate the aerosol for smoking. 
     The heater  11 , which is an infrared heater, is explained below: 
     The infrared heater  11  includes a base body and an infrared electrothermal coating (not shown in the drawings). 
     The base body may be cylindrical, prismatic or another cylindrical shape, preferably cylindrical. A cavity  12  is formed inside the base body, a through hole corresponding to the cavity  12  is formed in an upper cover  101  of the smoking set  10 , and the cigarette can be removed or inserted into the cavity  12 . 
     The infrared electrothermal coating is formed on the outer surface of the base body, and the infrared electrothermal coating receives electric power from the power supply apparatus  17  by using electrodes to generate heat, and transfers the generated heat to the cigarette inserted into the cavity  12  at least in the form of infrared radiation. 
     The power supply apparatus  17  supplies electric power for operating the smoking set  10 . For example, the power supply apparatus  17  can supply electric power to heat the heater  11  and can supply electric power needed to operate the controller. The power supply apparatus  17  may be, but is not limited to, a lithium iron phosphate (LiFePO4) battery. For example, the power supply apparatus  17  may be a lithium cobalt oxide (LiCoO2) battery or a lithium titanate battery. The power supply apparatus  17  may be a rechargeable battery or a disposable battery. 
     The printed circuit board (PCB)  18  may be integrated with but not limited to the controller, a second detection circuit in the first detection apparatus  13 , and a first detection circuit in the second detection apparatus  14 . 
     The controller can control the overall operation of the smoking set  10 . In detail, the controller not only controls the operation of the power supply apparatus  17  and the heater  11 , but also controls the operation of other elements in the smoking set  10 . In addition, the controller can determine whether the smoking set  10  can be operated by checking the status of the elements of the smoking set  10 . 
     The controller includes at least one processor. The processor may include a logic gate array, or may include a combination of a general purpose microprocessor and a memory storing a program executable in the microprocessor. In addition, those skilled in the art should understand that the controller may include another type of hardware. 
     Please refer to  FIG.  3    to  FIG.  5    for understanding.  FIG.  3    is a schematic diagram of the smoking set  10  after the upper cover  101  is removed.  FIG.  4    is a partial enlarged schematic diagram of  FIG.  3   .  FIG.  5    is a schematic diagram of the first detection apparatus. 
     The first detection apparatus  13  is provided downstream of the cover  16 . The first detection apparatus  13  includes a first elastic sheet  131 , a second elastic sheet  132  and a second detection circuit. 
     One end of the first elastic sheet  131  and one end of the second elastic sheet  132  form a through hole for insertion or removal of the cigarette, and the controller is electrically connected to the first elastic sheet  131  and the second elastic sheet  132  by using the second detection circuit. 
     When the cigarette is not inserted into the through hole, the end of the first elastic sheet  131  and the end of the second elastic sheet  132  are in contact with each other, that is, embraced together, such that a close circuit through which a current passes is formed between the second detection circuit, the first elastic sheet  131  and the second elastic sheet  132 . 
     When the cigarette is inserted into the through hole, the end of the first elastic sheet  131  and the end of the second elastic sheet  132  move to both sides, such that the end of the first elastic sheet  131  and the end of the second elastic sheet  132  are not in contact with each other, and an open circuit through which no current passes is formed between the second detection circuit, the first elastic sheet  131  and the second elastic sheet  132 . 
     It should be noted that the upstream and downstream in this embodiment are taken as an example of an aerosol flow direction. As shown in a dashed arrow in  FIG.  2   , one end of the arrow is downstream and the other end is upstream. 
     Please refer to  FIG.  2    for understanding. The second detection apparatus  14  includes a contact piece  141 , a conductive column  142  and a first detection circuit. 
     Both the contact piece  141  and the conductive column  142  are provided upstream of the cavity  12 , and the controller is electrically connected to the conductive column  142  and the contact piece  141  by using the first detection circuit. 
     When the cigarette inserted into the cavity  12  is not in place, the contact piece  141  is not in contact with the conductive column  142 , such that an open circuit through which no current passes is formed between the first detection circuit, the contact piece  141  and the conductive column  142 . 
     When the cigarette inserted into the cavity  12  is in place, the contact piece  141  moves downwards to be in contact with the conductive column  142 , such that a close circuit through which a current passes is formed between the first detection circuit, the contact piece  141  and the conductive column  142 . 
     Please refer to  FIG.  6    to  FIG.  8    for understanding.  FIG.  6    is a schematic diagram of the smoking set  10  after the upper cover  101 , a front cover and the first detection apparatus  13  are removed.  FIG.  7    is a partial enlarged schematic diagram of  FIG.  6   .  FIG.  8    is a schematic diagram of the driving apparatus  15 . 
     The driving apparatus  15  is a rotary electromagnet, including a shaft core  151  and a rotating rod  152 . The rotating rod  152  is movably connected to a hole  161  of the cover  16 , and the shaft core  151  can drive the rotating rod  152  to move along the lateral direction of the smoking set  10 , thereby driving the cover  16  to move along the lateral direction of the smoking set  10  to open or cover the cavity  12 . 
     In an example, the first detection apparatus  13  is configured to detect whether there is a cigarette to be inserted into the cavity  12 , and if it is detected that there is a cigarette to be inserted into the cavity  12 , output a cigarette insertion signal. 
     The controller is configured to acquire the cigarette insertion signal, and control, according to the cigarette insertion signal, the driving apparatus  15  to drive the cover  16  to move relative to the cavity  12 , so as to open the cavity  12  such that the cigarette can be inserted into the cavity  12 . 
     In this example, when the cigarette is inserted into the through hole formed by one end of the first elastic sheet  131  and one end of the second elastic sheet  132  through the upper cover  101  of the smoking set  10 , the end of the first elastic sheet  131  and the end of the second elastic sheet  132  moves to both sides, such that the end of the first elastic sheet  131  and the end of the second elastic sheet  132  are not in contact with each other, and an open circuit through which no current passes is formed between the second detection circuit, the first elastic sheet  131  and the second elastic sheet  132 . An output end of the second detection circuit outputs a level signal (e.g., a low level signal). After acquiring the level signal, the controller can control the driving apparatus  15  to drive the cover  16  to move relative to the cavity  12  to open the cavity  12 , such that the cigarette can be inserted into the cavity  12  via the through hole formed by one end of the first elastic sheet  131  and one end of the second elastic sheet  132 . 
     In an example, the second detection apparatus  14  is configured to detect whether the cigarette inserted into the cavity  12  is in place, and if it is detected that the cigarette inserted into the cavity  12  is in place, output a cigarette insertion fulfillment signal. 
     The controller is further configured to acquire the cigarette insertion fulfillment signal, and control, according to the cigarette insertion fulfillment signal, the heater  11  to start heating. 
     When the cigarette is inserted into the cavity  12  via the through hole formed by one end of the first elastic sheet  131  and one end of the second elastic sheet  132 , if the cigarette inserted into the cavity  12  is in place, the contact piece  141  move downwards to be in contact with the conductive column  142 , such that a close circuit through which a current passes is formed between the first detection circuit, the contact piece  141  and the conductive column  142 . An output end of the first detection circuit outputs a level signal (e.g., a high level signal). After acquiring the level signal, the controller controls the heater  11  to start heating. 
     Specifically, a temperature change curve of the heater  11  over time generally includes a heating phase, a heat preservation phase, and a smoking phase. 
     In the heating phase, the temperature of the heater  11  is raised from an initial temperature T0 (or an ambient temperature) to a preset target temperature T1. The preset target temperature T1 is set such that desired volatile compounds vaporize from the aerosol generation substrate, and undesired compounds with higher vaporization temperatures do not vaporize. 
     Generally, the preset target temperature T1 may be 200° C.-400° C. 
     In the heat preservation phase, the temperature of the heater  11  is maintained at the preset target temperature T1 for a period of time, such that the aerosol generation substrate is sufficiently preheated and a smoking feeling of a user is improved. 
     The duration of the heating phase is t0-t1, the duration of the heat preservation phase is t1-t2, and t0-t2 is a preheating time of the heater  11 . Generally, the preheating time of the heater  11  is 5 s to 30 s. 
     In the smoking phase, the user can smoke the aerosol generated by heating of the aerosol generating device  10 . In this phase, the temperature of the heater  11  is maintained within a certain preset temperature range or at a certain preset temperature for a period of time. 
     When the inserted cigarette is in place, the controller controls the heater  11  to start heating, that is, entering the heating phase. 
     Furthermore, the first detection apparatus  13  is further configured to output a cigarette pull-out signal, if it is detected that the cigarette is pulled out from the cavity  12  after the heater  11  completes heating. 
     The controller is further configured to acquire the cigarette pull-out signal, and control, according to the cigarette pull-out signal, the driving apparatus  15  to drive the cover  16  to move relative to the cavity  12 , so as to cover the cavity  12 . 
     After controlling the heater  11  to start heating, if the heater  11  completes heating (e.g., after smoking is finished), and the user pulls out the cigarette from the cavity  12 , the controller automatically controls the driving apparatus  15  to drive the cover  16  to cover the cavity  12 , preventing foreign objects from entering the cavity  12 . 
     In an example, the second detection apparatus  14  is further configured to output a cigarette insertion unfulfillment signal, if it is detected that the cigarette inserted into the cavity  12  is not in place after the heater  11  starts heating. 
     The controller is further configured to: acquire the cigarette insertion unfulfillment signal, and control, according to the cigarette insertion unfulfillment signal, the heater  11  to stop heating and record a completed heating time of the heater  11 . 
     After the heater  11  starts heating, if the cigarette is accidentally moved (may be in any phase of the heating phase, the heat preservation phase, and the smoking phase), the cigarette will be inserted into the cavity  12  not in place, that is, the contact piece  141  is not in contact with the conductive column  142 , such that an open circuit through which no current passes is formed between the first detection circuit, the contact piece  141  and the conductive column  142 . An output end of the first detection circuit outputs a level signal (e.g., a low level signal), and after acquiring the level signal, the controller controls the heater  11  to stop heating and records the completed heating time of the heater  11 . 
     Furthermore, the controller is further configured to: after the heater  11  stops heating, generate a first prompt message. 
     The smoking set  10  further includes: 
     a first prompt module, configured to acquire the first prompt message to prompt the user that the position of the cigarette is abnormal. 
     After the heater  11  starts heating, if the cigarette is accidentally moved, the heater  11  stops heating, and the user can be prompted that the position of the cigarette is abnormal by means of vibration, light or sound, etc., which is convenient for the user to reinsert the cigarette into the cavity  12  in place. 
     Furthermore, the second detection apparatus  14  is further configured to output a cigarette reinsertion fulfillment signal, if it is detected that the cigarette is reinserted into the cavity  12  in place within a first preset time after the heater  11  stops heating. 
     The controller is further configured to: acquire the cigarette reinsertion fulfillment signal, calculate a remaining heating time of the heater  11  according to the completed heating time of the heater  11 , and control the heater  11  to heat according to the cigarette reinsertion fulfillment signal and the remaining heating time of the heater  11 . 
     After the heater  11  starts heating, if the cigarette is accidentally moved, the heater  11  stops heating. If the user reinserts the cigarette into the cavity  12  in place, the cigarette can be continuously heated, and the user does not need to repress a key to start the heating, which further simplifies the operation of the smoking set and improves the user experience. 
     Furthermore, the first detection apparatus  13  is further configured to output a cigarette pull-out signal, if it is detected that the cigarette is pulled out from the cavity  12  after the heater  11  completes heating. 
     The controller is further configured to acquire the cigarette pull-out signal, and control, according to the cigarette pull-out signal, the driving apparatus  15  to drive the cover  16  to move relative to the cavity  12 , so as to cover the cavity  12 . 
     After controlling the heater  11  to restart heating, if the heater  11  completes heating (e.g., after smoking is finished), and the user pulls out the cigarette from the cavity  12 , the controller automatically controls the driving apparatus  15  to drive the cover  16  to cover the cavity  12 , preventing foreign objects from entering the cavity  12 . 
     Furthermore, the first detection apparatus  13  is further configured to output a cigarette pull-out signal, if it is detected that the cigarette is pulled out from the cavity  12  after the heater  11  stops heating. 
     The controller is further configured to acquire the cigarette pull-out signal, and control, according to the cigarette pull-out signal, the driving apparatus  15  to drive the cover  16  to move relative to the cavity  12 , so as to cover the cavity  12 . 
     During the process that the heater  11  starts heating, if the cigarette is accidentally moved (causing the heater  11  to stop heating) and pulled out from the cavity  12 , the controller automatically controls the driving apparatus  15  to drive the cover  16  to cover the cavity  12 . 
     Furthermore, the controller is further configured to: after the cover  16  covers the cavity  12 , within a second preset time, stop controlling the driving apparatus  15  to drive the cover  16  to move relative to the cavity  12  so as to open the cavity  12 . 
     After the cigarette is accidentally pulled out from the cavity  12  and the cover  16  covers the cavity  12 , the cover  16  no longer opens the cavity  12  within the second preset time (in this case, the controller can receive the cigarette insertion signal output by the first detection apparatus  13  but does not process the same, or the controller does not receive the cigarette insertion signal output by the first detection apparatus  13 ). 
     Furthermore, the controller is further configured to: after the cover  16  covers the cavity  12 , generate a second prompt message. 
     The smoking set  10  further includes: 
     a second prompt module, configured to acquire the second prompt message to prompt the user to replace the cigarette. 
     After the cigarette is accidentally pulled out from the cavity  12  and the cover  16  covers the cavity  12 , the user can be prompted to replace the cigarette by means of vibration, light or sound, etc., preventing the user from reinserting the old cigarette, and ensuring the mouth feeling of the user during use. 
     Second Embodiment 
     As shown in  FIG.  9   , the second embodiment of the present application provides a control method for a smoking set. For the specific structure of the smoking set  10 , reference can be made to the content of the first embodiment, which will not be repeated here. 
     The control method for a smoking set includes: 
     Step S 10 : Acquire a cigarette insertion signal output by a first detection apparatus. 
     Step S 11 : Control, according to the cigarette insertion signal, a driving apparatus to drive a cover to move relative to a cavity, so as to open the cavity such that the cigarette can be inserted into the cavity. 
     Specifically, when the cigarette is inserted into the through hole formed by one end of the first elastic sheet  131  and one end of the second elastic sheet  132  through the upper cover  101  of the smoking set  10 , the end of the first elastic sheet  131  and the end of the second elastic sheet  132  moves to both sides, such that the end of the first elastic sheet  131  and the end of the second elastic sheet  132  are not in contact with each other, and an open circuit through which no current passes is formed between the second detection circuit, the first elastic sheet  131  and the second elastic sheet  132 . An output end of the second detection circuit outputs a level signal (e.g., a low level signal). After acquiring the level signal, the controller can control the driving apparatus  15  to drive the cover  16  to move relative to the cavity  12  to open the cavity  12 , such that the cigarette can be inserted into the cavity  12  via the through hole formed by one end of the first elastic sheet  131  and one end of the second elastic sheet  132 . 
     In an example, the method further includes (not shown in drawings): 
     Step S 12 : Acquire a cigarette insertion fulfillment signal output by a second detection apparatus. 
     Step S 13 : Control a heater to start heating according to the cigarette insertion fulfillment signal. 
     Specifically, when the cigarette is inserted into the cavity  12  via the through hole formed by one end of the first elastic sheet  131  and one end of the second elastic sheet  132 , if the cigarette inserted into the cavity  12  is in place, the contact piece  141  move downwards to be in contact with the conductive column  142 , such that a close circuit through which a current passes is formed between the first detection circuit, the contact piece  141  and the conductive column  142 . An output end of the first detection circuit outputs a level signal (e.g., a high level signal). After acquiring the level signal, the controller controls the heater  11  to start heating. 
     A temperature change curve of the heater  11  over time generally includes a heating phase, a heat preservation phase, and a smoking phase. 
     In the heating phase, the temperature of the heater  11  is raised from an initial temperature T0 (or an ambient temperature) to a preset target temperature T1. The preset target temperature T1 is set such that desired volatile compounds vaporize from the aerosol generation substrate, and undesired compounds with higher vaporization temperatures do not vaporize. 
     Generally, the preset target temperature T1 may be 200° C.-400° C. 
     In the heat preservation phase, the temperature of the heater  11  is maintained at the preset target temperature T1 for a period of time, such that the aerosol generation substrate is sufficiently preheated and a smoking feeling of a user is improved. 
     The duration of the heating phase is t0-t1, the duration of the heat preservation phase is t1-t2, and t0-t2 is a preheating time of the heater  11 . Generally, the preheating time of the heater  11  is 5 s to 30 s. 
     In the smoking phase, the user can smoke the aerosol generated by heating of the aerosol generating device  10 . In this phase, the temperature of the heater  11  is maintained within a certain preset temperature range or at a certain preset temperature for a period of time. 
     When the inserted cigarette is in place, the controller controls the heater  11  to start heating, that is, entering the heating phase. 
     In an example, the method further includes (not shown in drawings): 
     Step S 1411 : Acquire a cigarette pull-out signal output by the first detection apparatus. 
     Step S 1412 : Control, according to the cigarette pull-out signal, the driving apparatus to drive the cover to move relative to the cavity, so as to cover the cavity. 
     Specifically, after controlling the heater  11  to start heating, if the heater  11  completes heating (e.g., after smoking is finished), the user pulls out the cigarette from the cavity  12 , the controller automatically controls the driving apparatus  15  to drive the cover  16  to cover the cavity  12 , preventing foreign objects from entering the cavity  12 . 
     In an example, the method further includes (not shown in drawings): 
     Step S 1421 : Acquire a cigarette insertion unfulfillment signal output by the second detection apparatus. 
     Step S 1422 : Control, according to the cigarette insertion unfulfillment signal, the heater to stop heating and record a completed heating time of the heater. 
     Specifically, after the heater  11  starts heating, if the cigarette is accidentally moved (can be in any phase of the heating phase, the heat preservation phase, and the smoking phase), the cigarette inserted into the cavity  12  will be not in place, that is, the contact piece  141  is not in contact with the conductive column  142 , such that an open circuit through which no current passes is formed between the first detection circuit, the contact piece  141  and the conductive column  142 . An output end of the first detection circuit outputs a level signal (e.g., a low level signal), and after acquiring the level signal, the controller controls the heater  11  to stop heating and records the completed heating time of the heater  11 . 
     Furthermore, if the heater  11  stops heating, the user can be prompted that the position of the cigarette is abnormal by means of vibration, light or sound, etc., which is convenient for the user to reinsert the cigarette into the cavity  12  in place. 
     In an example, the method further includes (not shown in drawings): 
     Step S 1511 : Acquire a cigarette reinsertion fulfillment signal output by the second detection apparatus. 
     Step S 1512 : Calculate a remaining heating time of the heater according to the completed heating time of the heater. 
     Step S 1513 : Control the heater to heat according to the cigarette reinsertion fulfillment signal and the remaining heating time of the heater. 
     Specifically, because the cigarette is accidentally moved, the heater  11  stops heating. If the user reinserts the cigarette into the cavity  12  in place, the cigarette can be continuously heated, and the user does not need to repress a key to start the heating, which further simplifies the operation of the smoking set and improves the user experience. 
     Furthermore, after controlling the heater  11  to restart heating, if the heater  11  completes heating (e.g., after smoking is finished), and the user pulls out the cigarette from the cavity  12  (that is, acquiring the cigarette pull-out signal output by the first detection apparatus  13 ), the controller automatically controls the driving apparatus  15  to drive the cover  16  to cover the cavity  12 , preventing foreign objects from entering the cavity  12 . 
     In an example, the method further includes (not shown in drawings): 
     Step S 1521 : Acquire the cigarette pull-out signal output by the first detection apparatus. 
     Step S 1522 : Control, according to the cigarette pull-out signal, the driving apparatus to drive the cover to move relative to the cavity, so as to cover the cavity. 
     Specifically, during the process that the heater  11  starts heating, if the cigarette is accidentally moved (causing the heater  11  to stop heating) and pulled out from the cavity  12 , the controller automatically controls the driving apparatus  15  to drive the cover  16  to cover the cavity  12 . 
     In an example, the method further includes (not shown in drawings): 
     Step S 1523 : After the cover covers the cavity, within a preset time, stop controlling the driving apparatus to drive the cover to move relative to the cavity, so as to open the cavity. 
     Specifically, after the cigarette is accidentally pulled out from the cavity  12  and the cover  16  covers the cavity  12 , the cover  16  no longer opens the cavity  12  within the preset time (in this case, the controller can receive the cigarette insertion signal output by the first detection apparatus  13  but does not process the same, or the controller does not receive the cigarette insertion signal output by the first detection apparatus  13 ). 
     Furthermore, after the cigarette is accidentally pulled out from the cavity  12  and the cover  16  covers the cavity  12 , the user can be prompted to replace the cigarette by means of vibration, light or sound, etc., preventing the user from reinserting the old cigarette, and ensuring the mouth feeling of the user during use. 
     An overall control process of the smoking set  10  will be described below with reference to  FIG.  10   : 
     Step S 21 : Insert a cigarette. 
     Step S 22 : Detect whether the cigarette is inserted. 
     Specifically, when the cigarette is not inserted, the end of the first elastic sheet  131  and the end of the second elastic sheet  132  are in contact with each other, that is, embraced together, such that a close circuit through which a current passes is formed between the second detection circuit, the first elastic sheet  131  and the second elastic sheet  132 . 
     When the cigarette is inserted, the end of the first elastic sheet  131  and the end of the second elastic sheet  132  move to both sides, such that the end of the first elastic sheet  131  and the end of the second elastic sheet  132  are not in contact with each other, and an open circuit through which no current passes is formed between the second detection circuit, the first elastic sheet  131  and the second elastic sheet  132 . 
     Step S 23 : If it is detected that the cigarette is inserted, an electromagnet drives the cover to open the cavity, and otherwise, the detection is continued. 
     Step S 24 : After the cavity is opened, the cigarette can be continuously inserted. 
     Step S 25 : Detect whether the inserted cigarette is in place. 
     Specifically, when the cigarette inserted into the cavity  12  is not in place, the contact piece  141  is not in contact with the conductive column  142 , such that an open circuit through which no current passes is formed between the first detection circuit, the contact piece  141  and the conductive column  142 . 
     When the cigarette inserted into the cavity  12  is in place, the contact piece  141  moves downwards to be in contact with the conductive column  142 , such that a close circuit through which a current passes is formed between the first detection circuit, the contact piece  141  and the conductive column  142 . 
     Step S 26 : When the cigarette inserted into the cavity  12  is in place, the controller controls the heater to start heating. 
     Step S 271 , Step S 28 , Step S 29 : If heating of the cigarette is completed and the cigarette is pulled out, the electromagnet drives the cover to close the cavity. 
     Step S 272 , step S 273 , step S 28 , step S 29 : If the cigarette is abnormally removed from an insertion position, the controller controls the heater to stop heating; in this case, if the cigarette is pulled out, the electromagnet drives the cover to close the cavity. 
     It should be noted that preferred embodiments of the present application are given in the specification and accompanying drawings thereof, but the present application can be embodied in many different forms and is not limited to the embodiments described in the specification, and these embodiments are not intended as additional limitations on the present application. These embodiments are provided for the purpose of achieving a more thorough and complete understanding of the disclosure of the present application. Furthermore, the above technical features continue to be combined with each other to form various embodiments not listed above, all of which are considered to be within the scope of the specification of the present application. Furthermore, it will be apparent to those of ordinary skill in the art that modifications or variations may be made in light of the above description, and all such modifications and variations should fall within the scope of the appended claims.