A smoking set for heating a cigarette and a control method thereof

Abstract

This invention discloses a cigarette heating device and its control method, comprising a heating chamber for heating the cigarette; the device emits radio frequency signals into the heating chamber to form an electromagnetic field, and the cigarette being heated is equipped with a tag that responds to the magnetic field and feeds back a signal; the device determines whether a cigarette is present in the heating chamber by detecting the corresponding feedback signal. The beneficial effects of this invention are: by ensuring the tag is intact to receive electromagnetic field energy and feed back a signal, it avoids the possibility of foreign objects falling into the heating chamber and causing incorrect execution of the heating program; furthermore, since the tag can be customized according to the manufacturer's needs, the device can identify whether the cigarette is a certified, legitimate cigarette by recognizing the feedback signal, preventing users from accidentally inhaling counterfeit cigarettes and experiencing discomfort or health problems.

Description

Technical Field

[0001] This invention belongs to the field of electronic cigarettes, specifically, it relates to a smoking device for heating cigarettes and a method for controlling the same. Background Technology

[0002] Cigarettes produce smoke when they burn. Because the temperature of a cigarette burning is very high, exceeding 800℃, the smoke produced under these high temperatures contains a large number of harmful substances. This smoke, permeating the air, forms secondhand smoke, which can harm those around the smoker. Furthermore, cigarettes produce an open flame when burning, and some smokers fail to completely extinguish the cigarette butt after smoking, easily causing a fire and posing a significant safety hazard.

[0003] The emergence of heated tobacco products (HTPs) has given smokers more choices. HTPs are smoking devices designed based on the concept of "heating without burning." Compared to traditional cigarettes, HTPs operate at a much lower temperature than traditional cigarettes. They simply heat the tobacco leaves, releasing their aroma to satisfy the user. The operating temperature of HTPs is typically between 250℃ and 350℃, while tobacco leaves do not burn below 350℃, avoiding the harmful substances produced by burning traditional cigarettes. This also prevents the formation of secondhand smoke, reducing harm to those around the user.

[0004] However, existing technologies for detecting whether a cigarette is inserted into the heating chamber in smoking devices have shortcomings. Most rely on methods such as infrared or capacitance detection, while more advanced methods use magnetic powder embedded in the cigarette to determine its insertion. Although these methods detect the cigarette, they are all prone to misjudgment. First, with conventional methods like infrared and capacitance detection, if tobacco or foreign objects fall into the heating chamber, they can block infrared light or alter the dielectric constant of the capacitor, leading to misjudgment and incorrect heating. Second, while magnetic powder can distinguish foreign objects within the heating chamber, the fine particles or powder distributed within the cigarette can easily fall into the heating chamber during insertion, heating, or removal. The magnetic field emitted by these particles can cause misjudgment and incorrect heating, affecting user experience.

[0005] Furthermore, the current e-cigarette market is rife with counterfeit products, with unscrupulous merchants profiting from the production of fake cigarettes. These counterfeit cigarettes typically use inferior tobacco, and users who unknowingly purchase and consume them may experience adverse health effects, potentially leading to acute adverse reactions. Currently, merchants usually print electronic codes on cigarette packs, allowing users to verify the cigarette's authenticity by scanning the code. However, requiring scanning for every purchase is cumbersome, and the likelihood of users performing this action is low, even close to zero. Moreover, some unscrupulous merchants reuse legitimate cigarette packs for packaging, making it impossible for users to effectively distinguish between genuine and counterfeit products. Therefore, a reliable method of identification is needed to protect users' health. In conclusion, existing methods for detecting cigarettes using e-cigarettes have significant shortcomings and fail to meet user needs.

[0006] In view of this, the present invention is proposed. Summary of the Invention

[0007] The technical problem to be solved by this invention is to overcome the shortcomings of the prior art and provide a smoking device for heating cigarettes and its control method. By printing a label on the cigarette, and taking advantage of the characteristic that the label can only emit a signal when it is intact, the problem of misjudgment caused by foreign objects falling into the heating chamber is solved. At the same time, by setting a label on each cigarette and identifying the label when it is inserted to distinguish whether the cigarette is genuine, the problem of users accidentally inhaling counterfeit cigarettes and affecting their health is solved.

[0008] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by the present invention is: a control method for microwave-heated cigarette devices, which has a heating cavity for heating cigarettes; the device emits radio frequency to the heating cavity to form an electromagnetic field, and the heated cigarette is equipped with a tag that responds to the magnetic field and emits a feedback signal; the device determines whether there is cigarette in the heating cavity by detecting the corresponding feedback signal.

[0009] Furthermore, the smoking device heats the cigarette by emitting microwaves, and the cigarette label emits a feedback signal in response to the microwave magnetic field. When the smoking device heats the cigarette, it determines whether a feedback signal is detected. If not, there is no cigarette in the heating chamber.

[0010] Furthermore, the smoking device transmits microwave signals to the cigarette via a microwave transmitting module; the microwave transmitting module is capable of sending radio frequency signals and receiving feedback signals from the tag response.

[0011] Furthermore, the smoking device has a processor that decodes the feedback signal. The processor identifies the cigarette's identity information and compares it with pre-stored data to determine whether the cigarette has known identity information.

[0012] Furthermore, the data information contains multiple distinct cigarette authentication information. It is determined whether the identity information is the same as any of the cigarette authentication information. If so, the cigarette is determined to have known identity information; otherwise, the cigarette is determined to have unknown identity information.

[0013] Furthermore, the smoking device has multiple preset heating modes, and the corresponding heating mode is operated according to the identity information of the cigarette.

[0014] Furthermore, the smoking device is equipped with a microwave generating circuit that emits microwaves to the cigarette; the current value of the microwave generating circuit is detected, and it is determined whether the detected current value is within the preset working current value range. If not, it is determined that the cigarette is not fully inserted into the smoking device.

[0015] Furthermore, when the smoking device is turned on, a feedback signal is detected. When it is determined that there is a cigarette inside the device, the current value of the microwave circuit is detected. If it is determined that the cigarette is not fully inserted into the device, the user is alerted.

[0016] A cigarette heating device includes a radio frequency transmitting module that emits radio frequency to form an electromagnetic field; the device also includes a tag disposed on the heated cigarette and having a circuit that emits a feedback signal in response to the electromagnetic field; and a receiving unit disposed inside the device for receiving the feedback signal; the device is controlled by a cigarette heating device control method as described above.

[0017] Furthermore, the radio frequency transmitting module is a microwave transmitting module that transmits microwaves; the microwave transmitting module transmits microwaves to the cigarette and heats the cigarette.

[0018] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art: The tag's requirement that it be intact to receive electromagnetic energy and provide feedback signals avoids the possibility of foreign objects falling into the heating chamber and causing incorrect execution of the heating program. Furthermore, since the tag can be customized according to the manufacturer's needs, the feedback signal can be identified to determine whether the cigarette is a certified, legitimate cigarette, preventing users from experiencing discomfort or health problems due to the accidental inhalation of counterfeit cigarettes. Moreover, by having the tag sense and provide feedback signals to the magnetic field generated by the microwaves used to heat the cigarette, wireless radio frequency technology can be applied without the need for an additional radio frequency transmitting unit, thus reducing the size of the smoking device.

[0019] At the same time, the present invention has a simple structure, significant effects, and is suitable for widespread use.

[0020] The specific embodiments of the present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0021] The accompanying drawings, as part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments and descriptions of the invention are used to explain the invention, but do not constitute an undue limitation of the invention. Obviously, the drawings described below are merely some embodiments, and those skilled in the art can obtain other drawings based on these drawings without creative effort. In the drawings:

[0022] Figure 1 This is a schematic flowchart of the control method for starting up a smoking device according to an embodiment of the present invention;

[0023] Figure 2 This is a schematic flowchart of the control method for starting up a smoking device according to a preferred embodiment of the present invention;

[0024] Figure 3 This is a schematic flowchart of the control method for the cigarette heating process of the smoking device according to an embodiment of the present invention;

[0025] Figure 4 This is a schematic diagram of the structure when a cigarette is inserted into a smoking device according to an embodiment of the present invention.

[0026] In the diagram: 1. Smoking device; 2. Cigarette; 101. Heating chamber; 102. Microwave transmitting module; 103. Processor; 201. Label.

[0027] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the invention in any way, but rather to illustrate the concept of the invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0029] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0030] like Figure 1-4As shown in the embodiment of the present invention, a control method for heating cigarette 2 and smoking device 1 is introduced, which has a heating chamber 101 for heating cigarette 2; the smoking device 1 emits radio frequency into the heating chamber 101 to form an electromagnetic field, and the heated cigarette 2 is provided with a tag 201 that responds to the magnetic field and emits a feedback signal; the smoking device 1 determines whether there is cigarette 2 in the heating chamber 101 by detecting the corresponding feedback signal.

[0031] It should be noted that the present invention involves setting a circuit with a coil on the cigarette 2. When the cigarette 2 is inserted into the heating chamber 101, the circuit is simultaneously introduced into the electromagnetic field within the heating chamber 101. The electromagnetic field induced by the coil is used to charge the circuit. The circuit also includes a signal transmission module that transmits a feedback signal using the electrical energy provided by the coil. The frequency and wavelength of the feedback signal can be customized according to requirements. The smoking device 1 determines whether a cigarette 2 has been inserted by receiving the feedback signal.

[0032] Tag 201 is an electronic tag, or an RFID card, or a module with a circuit that can sense a magnetic field and emit a feedback signal, or a passive RFID tag, or an active RFID tag, or a semi-active RFID tag.

[0033] Preferably, tag 201 is an electronic module using passive RFID technology. Tag 201 on cigarette 2 receives microwave signals transmitted from a radio frequency identification reader and obtains energy through an electromagnetic induction coil to briefly power itself, thus completing the information exchange. Since tag 201 does not require a power source, its size can be in the centimeter range or even smaller. It also has a simple structure, strong heat resistance, and will not be damaged by heating cigarette 2. It is low in cost, has a low failure rate, and a long service life. Furthermore, since cigarette 2 is placed inside heating chamber 101, the distance between the chamber wall and tag 201 is relatively short. Therefore, the typically short effective identification distance of passive RFID will not affect the identification of cigarette 2. Moreover, when tag 201 is partially damaged and falls from cigarette 2 into heating chamber 101, a complete circuit cannot be formed, and the damaged tag 201 cannot respond to the electromagnetic field within heating chamber 101 to send feedback information, effectively preventing misjudgment by the identification device.

[0034] With the above settings, the label 201 can only receive electromagnetic field energy and feed back signals when it is intact. This avoids the situation where the smoking device 1 is incorrectly executed due to foreign objects falling into the heating chamber 101. In addition, since the label 201 can be customized according to the manufacturer's needs, it can identify whether the cigarette 2 is a certified and legitimate cigarette 2 by recognizing the feedback signal, thus preventing users from experiencing physical discomfort and affecting their health due to accidentally inhaling counterfeit cigarettes.

[0035] In embodiments of the present invention, the label 201 is printed on the cigarette paper of the cigarette 2 using printing technology, which is beneficial for identifying the cigarette 2. In the production process, the label 201 can be printed on the surface of the cigarette 2 after all parts have been assembled, which facilitates the production of the cigarette 2 and improves production efficiency.

[0036] In an embodiment of the present invention, the smoking device 1 heats the cigarette 2 by emitting microwaves. The smoking device also emits a second radio frequency, which is different from the microwave band, into the heating cavity. The label 201 of the cigarette 2 emits a feedback signal in response to the second electromagnetic field formed by the second radio frequency. When the smoking device 1 is turned on, it is determined whether a feedback signal is detected. If not, there is no cigarette 2 in the heating cavity 101, and the emission of microwaves into the heating cavity 101 is stopped.

[0037] In a preferred embodiment of the present invention, the smoking device 1 heats the cigarette 2 by emitting microwaves, and the label 201 of the cigarette 2 emits a feedback signal in response to the microwave magnetic field; when the smoking device 1 heats the cigarette 2, it determines whether a feedback signal is detected. If not, there is no cigarette 2 in the heating cavity 101.

[0038] It should be noted that this invention applies to cigarettes 2 heated by microwaves and smoking devices 1 for heating cigarettes 2. The working method is as follows: a microwave generator is installed in the smoking device 1, powered by the device's power supply to generate microwaves. The microwave output terminal of the microwave generator is equipped with contacts, which are connected to the fixed end of a microwave transmitting module 102. The microwave transmitting module 102 is a microwave antenna that feeds the microwaves generated by the microwave generator into the cigarette 2. By providing a shielding layer on the inner circumferential wall of the heating cavity 101 and / or the outer circumference of the cigarette 2, when the propagation part of the microwave transmitting module 102 is fully inserted into the core segment of the cigarette 2, a closed shielding space is formed by the shielding layer and the structure of the cigarette 2, allowing the microwaves to be shielded within the shielding space. The neutral polar molecules in the core segment of the cigarette 2 oscillate at high frequencies due to the action of the microwaves, causing the temperature of the core segment to rise due to the mutual oscillation and friction between the internal molecules. This achieves low-temperature heating of the cigarette 2 by microwaves, allowing the cigarette 2 to emit a tobacco aroma for the user to smoke.

[0039] With the above settings, the tag 201 senses and feeds back the magnetic field generated by the microwave used to heat the cigarette 2, so as to realize the application of wireless radio frequency technology without setting up an additional radio frequency transmitting unit, thereby reducing the size of the smoking device 1. At the same time, during the heating process of the cigarette 2, there is always an electromagnetic field in the heating cavity 101, and the feedback signal can be detected at any time. There is no need to constantly switch the radio frequency generating unit on and off during detection, which would shorten the service life of the radio frequency generating unit and improve the stability of the operation of the smoking device 1.

[0040] In an embodiment of the present invention, a receiving unit for detecting feedback signals is disposed on the cavity wall of the heating cavity 101.

[0041] In one embodiment of the present invention, the smoking device 1 is equipped with a microwave transmitting module 102 for transmitting microwave signals to the cigarette 2 and a processor 103 for receiving and decoding feedback signals; the processor 103 receives and identifies the identity information of the cigarette 2, and compares the identity information of the cigarette 2 with pre-stored data information to determine whether the cigarette 2 has known identity information.

[0042] In another embodiment of the present invention, the smoking device 1 is provided with a microwave transmitting module 102 that transmits microwave signals to the cigarette 2; the microwave transmitting module 102 is also capable of receiving feedback signals from the tag 201; by setting the microwave transmitting module 102 as a dual-purpose transceiver antenna, the number of components inside the smoking device 1 is further reduced, and the overall size of the smoking device 1 is reduced; the smoking device 1 has a processor 103 that decodes the feedback signals, and the processor 103 identifies the identity information of the cigarette 2, and determines whether the cigarette 2 has known identity information by comparing the identity information of the cigarette 2 with the pre-stored data information.

[0043] In an embodiment of the present invention, the microwave transmitting module 102 is electrically connected to the microwave generating circuit; the microwave generating circuit converts the electrical energy of the power supply into microwaves and transmits them to the microwave transmitting module 102, and transmits the microwaves to the heating cavity through the microwave transmitting module 102.

[0044] In embodiments of the present invention, the microwave generating circuit and the processor 103 are electrically connected to the same circuit.

[0045] In an embodiment of the present invention, the data information has multiple different cigarette 2 authentication information. It is determined whether the identity information is the same as any of the cigarette 2 authentication information. If so, it is determined that the cigarette device 1 has known identity information; if not, it is determined that the cigarette device 1 has unknown identity information.

[0046] In embodiments of the present invention, the data information is the brand of qualified cigarette 2 and / or the category of that brand. The authenticity of cigarette 2, as well as its brand and category, can be determined by comparing whether the identity information is within the data information.

[0047] In embodiments of the present invention, the smoking device 1 has an information transmission module for updating data information; and for adding or removing the brands or categories of cigarettes 2 that are permitted to be heated based on market information.

[0048] In an embodiment of the present invention, the smoking device 1 also has a prompting device; when it is determined that the smoking device 1 has unknown identity information, the prompting device executes a preset first prompting method to remind the user.

[0049] In embodiments of the present invention, the prompting device of the smoking device 1 includes a sound-emitting part for reminding the user by sound; a display part for reminding the user by displaying different methods; and a vibration part for reminding the user by causing the smoking device 1 to vibrate. When the cigarette 2 is not fully inserted into the smoking device 1, the sound-emitting part, and / or the display part, and / or the vibration part respectively remind the user.

[0050] In embodiments of the present invention, the smoking device 1 has multiple preset heating modes, and the corresponding heating mode is run according to the identity information of the cigarette 2.

[0051] In embodiments of the present invention, different feedback signal tags 201 are provided according to different types of cigarettes 2; specifically, the different types of cigarettes 2 include the thickness of the tobacco shreds and the amount of tobacco shreds in the cigarettes 2. By setting different tags 201 for different types of cigarettes 2 respectively, the smoking device 1 can execute the corresponding heating mode.

[0052] In an embodiment of the present invention, when the smoking device 1 is turned on, it is determined whether the heating chamber 101 contains cigarettes 2. If not, the smoking device 1 is turned off.

[0053] In an embodiment of the present invention, when the smoking device 1 is turned on, the cigarette 2 detection device is activated to determine whether the heating chamber 101 contains cigarette 2. If not, after a certain period of time, the device is checked again to determine whether the heating chamber 101 contains cigarette 2. If not, the smoking device 1 is turned off.

[0054] Preferably, when the smoking device 1 is turned on, if it is determined that the heating chamber 101 does not contain cigarettes 2, the prompting device prompts the user in a preset second prompting manner for a certain period of time, and then determines again whether the heating chamber 101 contains cigarettes 2. If not, the smoking device 1 is turned off.

[0055] The second prompt method is the same as or different from the first prompt method.

[0056] In embodiments of the present invention, the heating mode of the smoking device 1 includes a combination control of one or more parameters such as heating power and / or heating time.

[0057] In an embodiment of the present invention, the step of determining whether there is a cigarette 2 in the heating chamber 101 when the smoking device 1 is turned on is as follows:

[0058] S01: When the smoking device 1 is turned on, an electromagnetic field is generated in the heating chamber. Determine whether a feedback signal is detected. If yes, proceed to S03; otherwise, proceed to S02.

[0059] S02: Determine again whether a feedback signal is detected. If yes, proceed to S03; otherwise, proceed to S06.

[0060] S03: Identify the identity information of cigarette 2 and determine whether cigarette 2 has known identity information. If yes, proceed to S05; otherwise, proceed to S06.

[0061] S05: Begin heating cigarette 2;

[0062] S06: The smoking device 1 is turned off and the user is prompted.

[0063] In a preferred embodiment of the present invention, S04 is performed before S05: select the corresponding heating mode according to the identity information, and then perform S05.

[0064] In an embodiment of the present invention, after failing to receive a feedback signal for the first time, the smoking device 1 is kept running for a period of time before receiving a feedback signal again. If the feedback signal is not received, it is determined that there is no cigarette 2 in the heating chamber 101.

[0065] In an embodiment of the present invention, a microwave generating circuit for emitting microwaves to cigarette 2 is provided inside the smoking device 1; the current value of the microwave generating circuit is detected, and it is determined whether the detected current value is within the preset working current value range. If not, it is determined that cigarette 2 is not fully inserted into the smoking device 1.

[0066] In an embodiment of the present invention, the cigarette 2 is not fully inserted into the smoking device 1, meaning that the smoking device 1 contains the cigarette 2, but the bottom end or part of the bottom end of the cigarette 2 does not contact the bottom of the heating chamber 101 of the smoking device 1.

[0067] It needs to be explained that the microwave transmitting module 102 essentially propagates current in the form of a wave to the core section of the cigarette 2. Since microwave propagation is affected by the space in which the microwave transmitting module 102 is located, changes in the space, such as when the microwave transmitting module 102 is not fully inserted into the cigarette 2, create a partially shielded space, leading to microwave leakage. Essentially, this places the microwave transmitting module 102 in a poorly insulating medium. According to the wave equation, this situation significantly increases the total impedance of the microwave transmitting module 102, consequently increasing the overall resistance of the microwave generating circuit and reducing the current in the microwave generating circuit. The total impedance of the microwave transmitting module 102 includes its characteristic impedance and the input impedance, which changes due to its length and the space it occupies. In this embodiment, the length of the microwave transmitting module 102 remains unchanged. Therefore, the total impedance of the microwave transmitting module 102 in this embodiment only changes depending on whether the microwave transmitting module 102 is fully inserted into the cigarette 2. By comparing the current current value with the current value under normal operating conditions, it can be determined whether the cigarette 2 is fully inserted.

[0068] The current value of the microwave generating circuit is I = U / (|Z|), where I is the current value, U is the voltage of the power supply, and Z is the resistance value of the microwave generating circuit. Since the resistance values ​​of other loads on the microwave generating circuit, except for the microwave transmitting module 102, are basically unchanged, the other loads can be regarded as the characteristic impedance of the microwave transmitting module 102, and thus |Z| can be regarded as the total impedance value of the microwave transmitting module 102.

[0069] By using the above settings, the current value of the microwave generating circuit is detected and compared with the operating current value range. This allows the system to determine whether the overall resistance value of the microwave circuit has changed significantly, thus determining whether the cigarette 2 is correctly inserted into the heating chamber 101. Compared with traditional detection methods, the detection results are more accurate and can provide timely feedback on the working status of the smoking device 1, giving users greater peace of mind. Furthermore, foreign objects such as paper cannot form a sealed shielding space within the heating chamber 101, preventing the detection current value from reaching the normal operating current value range. This effectively avoids misjudgments caused by foreign objects falling in.

[0070] In embodiments of the present invention, the current detection module is connected in series or in parallel with the microwave generating circuit; the current detection is performed automatically when the microwave generating circuit is powered on; specifically, the judgment is made by detecting abnormal current in the microwave generating circuit; the above method is a passive detection, which is different from active detection methods such as infrared detection or dielectric constant detection; such a detection method only needs to call the current detection value when a judgment is needed, without the need for separate control and power supply of the detection element, which can simplify the detection logic and internal structure of the smoking device 1 and facilitate manufacturing.

[0071] In embodiments of the present invention, the operating current value range is the range of current values ​​when the smoking device 1 heats the cigarette 2 when the microwave transmitting module 102 is fully inserted into the core section of the cigarette 2; if the detected current value is within the operating current value range, it proves that the smoking device 1 is in normal working condition.

[0072] Preferably, the operating current range is 1.3A-1.6A.

[0073] In one embodiment of the present invention, the smoking device 1 is provided with a microwave transmitting module 102, and the microwave generating circuit transmits microwaves to the cigarette 2 through the microwave transmitting module 102; the current value of the microwave generating circuit is detected, and it is determined whether the detected current value is less than the minimum value of the working current value range. If so, it is determined that the cigarette 2 is not fully inserted into the smoking device 1.

[0074] Based on the above settings and the explanation of the working principle of the smoking device 1 for microwave-heated cigarette 2, it can be seen that when the current value of the microwave generating circuit decreases abnormally, it indicates that the total resistance value in the circuit increases abnormally. This can be determined that the microwave emitting end of the microwave emitting module 102 is not in a sealed shielded space, that is, the cigarette 2 is not fully inserted into the heating cavity 101 of the smoking device 1, resulting in a gap between the cigarette 2 and the heating cavity 101, causing microwaves to escape and the efficiency of the smoking device 1 in heating the cigarette 2 to be low.

[0075] Preferably, it is determined whether the detected current value is within the preset first abnormal current value range. If so, it is determined that the cigarette 2 is not fully inserted into the smoking device 1. The maximum value of the first abnormal current value range is less than the minimum value of the working current value range. More preferably, the value of the first abnormal current range is 0.8A-1.1A.

[0076] In one embodiment of the present invention, when detecting the current value of the microwave generating circuit, it is also determined whether the detected current value is greater than the maximum value of the working current value range. If so, it is determined that the microwave transmitting module 102 and the microwave generating circuit are disconnected.

[0077] With the above settings, if the connection between the microwave transmitting module 102 and the microwave generating circuit contacts is broken, that is, if there is no electrical connection between the microwave transmitting module 102 and the contacts, then microwaves cannot propagate to the microwave transmitting module 102 through the contacts, but instead flow back to the power supply in the form of current, thereby increasing the current value in the microwave generating circuit. Therefore, when an abnormal increase in the current value of the circuit is detected, it can be determined that the connection between the contacts and the microwave transmitting module 102 is broken.

[0078] Preferably, it is determined whether the detected current value is within a preset second abnormal current value range. If so, it is determined that the microwave transmitting module 102 and the microwave generating circuit are disconnected. The minimum value of the second abnormal current value range is greater than the maximum value of the operating current value range. More preferably, the value of the second abnormal current range is 3A-4A.

[0079] In another embodiment of the present invention, a microwave emitting module 102 is provided inside the cigarette 2. When the cigarette 2 is heated, the microwave emitting module 102 inside the cigarette 2 is electrically connected to the microwave generating circuit. The microwave generating circuit emits microwaves to the cigarette 2 through the microwave emitting module 102. The current value of the microwave generating circuit is detected, and it is determined whether the detected current value is greater than the maximum value of the working current value range. If so, it is determined that the cigarette 2 is not fully inserted into the smoking device 1.

[0080] Specifically, the front end of the cigarette 2 is set as a core segment, and a microwave emitting module 102 is embedded in the core segment. A base is set at the front end of the core segment. The microwave emitting module 102 is fixedly connected to the base and electrically connected to the microwave generating circuit in the heating chamber 101 of the smoking device 1 through the base.

[0081] With the above settings, the installation method of the microwave transmitting module 102 in another embodiment of the present invention is different from that in the above embodiment. In this embodiment, when the cigarette 2 is not properly inserted, the base does not contact the contacts of the microwave generating circuit, that is, the microwave transmitting module 102 and the contacts are disconnected. As a result, the current value of the microwave generating circuit is similar to the case in the previous embodiment where the current value is greater than the maximum value of the working current range, that is, the detection current is within the second abnormal detection range. Therefore, when the detection current value becomes abnormally large, it can be determined that the microwave transmitting module 102 of the cigarette 2 is not electrically connected to the contacts of the smoking device 1, that is, the cigarette 2 is not fully inserted into the heating chamber 101 of the smoking device 1.

[0082] In another embodiment of the present invention, when detecting the current value of the microwave generating circuit, it is also determined whether the detected current value is less than the minimum value of the working current value range. If so, it is determined that the microwave transmitting module 102 is not installed in the correct position on the cigarette 2.

[0083] With the above settings, when the detected current value is less than the maximum value of the working current value range, it can be determined that the cigarette 2 is fully inserted into the heating chamber 101, and the electrical connection between the microwave emitting module 102 and the microwave generating circuit is in a connected state; furthermore, by detecting that the current value is less than the minimum value of the working current value range, it can be further determined that the microwave emitting module 102 is not correctly installed in the cigarette 2. The smoking device 1 reminds the user based on the above judgment results that the cigarette 2 is damaged and cannot be used normally.

[0084] In an embodiment of the present invention, when the smoking device 1 is turned on, a feedback signal is detected. When it is determined that there is a cigarette 2 inside the smoking device 1, the current value of the microwave circuit is detected. When it is determined that the cigarette 2 is not fully inserted into the smoking device 1, the user is reminded.

[0085] In an embodiment of the present invention, during the process of heating the cigarette 2 in the smoking device 1, the current value of the microwave generating circuit is detected in real time. If it is determined that the cigarette 2 is not fully inserted into the smoking device 1, a feedback signal is detected. If it is determined that there is no cigarette 2 in the heating cavity 101, it is determined that the cigarette 2 has been pulled out.

[0086] In one embodiment of the present invention, when it is determined that the connection between the microwave transmitting module 102 and the microwave generating circuit is broken, the prompting device reminds the user in a preset third prompting manner.

[0087] In another embodiment of the present invention, when it is determined that the microwave transmitting module 102 is not installed in the correct position on the cigarette 2, the prompting device and the fourth prompting method remind the user.

[0088] In the embodiments of the present invention, each prompting method may be the same or different; preferably, each prompting method is different from the prompting method.

[0089] In an embodiment of the present invention, after the initial determination that the detected current value is not within the working current value range, the current value of the microwave generating circuit is detected multiple times consecutively. If each detected current value is not within the working current value range, it is determined that the cigarette 2 and the smoking device 1 are not fully inserted into the smoking device 1. Through continuous determination, the determination result is ensured to be correct, and the error of the detected value in a short period of time is avoided, which may lead to misjudgment of the working status of the smoking device 1 heating the cigarette 2.

[0090] In an embodiment of the present invention, when the detected current value is not within the working current range at least twice consecutively, it is determined that the smoking device 1 is in an abnormal working state; the abnormal working state of the smoking device 1 includes at least the following: the cigarette 2 is not fully inserted into the smoking device 1, and / or the microwave emitting module 102 is disconnected from the microwave generating circuit, and / or the microwave emitting module 102 is not installed in the correct position on the cigarette 2.

[0091] Preferably, the interval between each detection is equal.

[0092] With the above settings, by combining the detection results of whether cigarette 2 exists in the heating chamber 101, it is possible not only to determine whether cigarette 2 is inserted into the appropriate position, but also to further determine whether poor contact is caused by cigarette 2 being pulled out or cigarette 2 being misaligned, resulting in abnormal current. This makes the detection of cigarette 2 by the smoking device 1 more comprehensive, thereby enabling the smoking device 1 to accurately provide corresponding feedback based on the current working situation, making the smoking device 1 more intelligent and improving the user experience.

[0093] In a preferred embodiment of the present invention, when the smoking device 1 is turned on, the following steps are also included: after the judgment in S04 and before the execution of S05, S07 needs to be executed.

[0094] S07: Detect the current value of the microwave generating circuit and determine again whether the cigarette 2 is fully inserted into the smoking device 1. If yes, proceed to S05; otherwise, proceed to S08.

[0095] S08: Activate the prompting device to remind the user in a third prompting manner, detect the current value of the microwave generating circuit, and determine whether the detected current is within the operating current value range. If yes, execute S05; otherwise, execute S06.

[0096] In an embodiment of the present invention, during the execution of the heating procedure, when it is determined that the cigarette 2 is not fully inserted, a feedback signal is detected to determine whether the heating chamber 101 contains the cigarette 2. If yes, it is determined that the smoking device 1 contains the cigarette 2 that is not fully inserted; if no, it is determined that the cigarette 2 is abnormally pulled out.

[0097] In an embodiment of the present invention, the abnormal removal of the cigarette 2 is defined as: the cigarette 2 leaving the heating chamber 101 during the heating process.

[0098] Through the above settings, it is possible to accurately determine whether the smoking device 1 was accidentally turned on by the user or whether the cigarette 2 was inserted incorrectly, causing the smoking device 1 to malfunction. This allows the system to provide corresponding feedback and reminders to the user, enabling them to react promptly.

[0099] In an embodiment of the present invention, after determining that the smoking device 1 contains a cigarette 2 that is not fully inserted, the microwave generating circuit remains open and the current value in the microwave circuit is detected in real time. The circuit determines whether the detected current value is within the preset operating current value range. If so, the prompting device stops executing the first prompting mode.

[0100] In embodiments of the present invention, the control method for the heating process of cigarette 2 by the smoking device 1 includes:

[0101] S11: Real-time detection of the current value of the microwave generating circuit to determine whether the cigarette 2 is fully inserted into the smoking device 1. If yes, execute S15; otherwise, execute S12.

[0102] S12: Detect the feedback signal and determine whether the heating chamber 101 contains cigarettes 2. If yes, execute S13; otherwise, execute S16.

[0103] S13: Activate the prompting device to prompt the user in the first prompting manner, and then check the current value in the microwave generating circuit N times to determine whether the cigarette 2 is completely inserted into the smoking device 1. If yes, execute S14; if no, execute S16.

[0104] S14: Indicates that the device has stopped operating; proceed to S15.

[0105] S15: The smoking device 1 continues to heat the cigarette 2;

[0106] S16: The prompting device is operating in the third prompting mode, proceed to S17;

[0107] S17: Smoking device 1 is off.

[0108] like Figure 4 As shown in the embodiments of the present invention, a cigarette heating device 1 is also introduced. The device 1 includes a radio frequency transmitting module that emits radio frequency to form an electromagnetic field; the device 1 also includes a tag 201, which is disposed on the heated cigarette 2 and has a circuit that responds to the electromagnetic field and emits a feedback signal; a receiving unit, which is disposed inside the device, for receiving the feedback signal; the device is controlled by a cigarette heating device control method as described above.

[0109] In embodiments of the present invention, the smoking device heats the cigarette by means of a resistance wire; or, the smoking device is provided with a microwave emitting module 102, which heats the cigarette 2 by emitting microwaves.

[0110] In a preferred embodiment of the present invention, the radio frequency transmitting module is a microwave transmitting module 102 that transmits microwaves; the microwave transmitting module 102 transmits microwaves to the cigarette and heats the cigarette.

[0111] In one embodiment of the present invention, the smoking device 1 is further provided with a processor 103, which is used to decode the feedback signal into identity information and determine whether the identity information is known identity information; the receiving unit is integrated with the processor 103, so that the processor 103 can receive and decode the feedback signal.

[0112] In another embodiment of the present invention, the receiving unit and the microwave transmitting module 102 are integrated, enabling the microwave transmitting module 102 to transmit microwaves and receive feedback signals from the tag 201; the smoking device 1 is also provided with a processor 103, which is used to decode the feedback signal into identity information and determine whether the identity information is known identity information.

[0113] In a preferred embodiment of the present invention, the microwave transmitting module 102 is a microstrip line, i.e., a microwave antenna; the microstrip line is inserted into the cigarette 2 and heats the cigarette 2 by emitting microwaves.

[0114] In another preferred embodiment of the present invention, the transmitting end of the microwave transmitting module 102 is disposed in the heating cavity 101. The transmitting end is in contact with or spaced from the cigarette 2. The microwave transmitting module 102 transmits microwaves into the heating cavity 101, and the cigarette 2 is heated by the electromagnetic field formed by the microwaves to release smoke.

[0115] In an embodiment of the present invention, label 201 is printed on the outer surface of the cigarette paper of cigarette 2.

[0116] In embodiments of the present invention, the smoking device 1 further includes an information transmission module, which updates the data information stored in the processor 103 via wired and / or wireless transmission.

[0117] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present invention. The implementation schemes in the above embodiments can be further combined or replaced. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A method for controlling microwave-heated cigarette devices, comprising a heating chamber for heating cigarettes; characterized in that, The smoking device emits radio frequency signals into the heating chamber to form an electromagnetic field. The cigarette being heated is equipped with a tag that responds to the magnetic field and emits a feedback signal. The smoking device determines whether there is a cigarette in the heating chamber by detecting the corresponding feedback signal. A microwave generator is installed in the smoking device. The microwave output terminal of the microwave generator is equipped with a contact, which is connected to the fixed end of a microwave transmitting module. The microwave transmitting module is a microwave antenna that can feed microwaves generated by the microwave generator into the cigarette to heat the cigarette; and the microwave transmitting module can transmit microwave signals to the cigarette and also receive feedback signals from the tag response. A shielding layer is provided on the inner circumferential wall of the heating cavity and / or the outer circumference of the cigarette, so that when the propagation part of the microwave transmitting module is fully inserted into the core section of the cigarette, a closed shielding space is formed by the shielding layer and the structure of the cigarette, so that the microwave is shielded within the shielding space. The smoking device heats the cigarette by emitting microwaves, and the cigarette label emits a feedback signal in response to the microwave magnetic field. When the smoking device heats the cigarette, it determines whether a feedback signal is detected. If not, there is no cigarette in the heating chamber.

2. The method for controlling heated cigarette smoking devices according to claim 1, characterized in that, The smoking device has a processor that decodes the feedback signal. The processor identifies the cigarette's identity information and compares it with pre-stored data to determine whether the cigarette has known identity information.

3. The control method for heating cigarette devices according to claim 2, characterized in that, The data contains multiple distinct cigarette authentication records. The system determines whether the identity information matches any of the cigarette authentication records. If it does, the cigarette is considered to have known identity information; otherwise, the cigarette is considered to have unknown identity information.

4. The control method for heating cigarette devices according to claim 2, characterized in that, The smoking device has multiple preset heating modes, and the corresponding heating mode is activated based on the cigarette's identification information.

5. A method for controlling a heated cigarette smoking device according to any one of claims 1-4, characterized in that, The smoking device is equipped with a microwave generating circuit that emits microwaves to the cigarette; the current value of the microwave generating circuit is detected, and it is determined whether the detected current value is within the preset working current value range. If not, it is determined that the cigarette is not fully inserted into the smoking device.

6. The control method for heating cigarette devices according to claim 5, characterized in that, When the smoking device is turned on, a feedback signal is detected. If it is determined that there is a cigarette inside the device, the current value of the microwave circuit is detected. If it is determined that the cigarette is not fully inserted into the device, the user is alerted.

7. A smoking device for heating cigarettes, the device comprising a radio frequency transmitting module for emitting radio frequency to form an electromagnetic field; characterized in that, Smoking accessories also include, A label (201) is placed on the heated cigarette (2) and has a circuit that emits a feedback signal in response to an electromagnetic field; The receiving unit, located inside the smoking device, is used to receive feedback signals; The smoking device is controlled by a control method for heated cigarette smoking devices as described in any one of claims 1-6.

8. A smoking device for heating cigarettes according to claim 7, characterized in that, The radio frequency transmitting module is a microwave transmitting module (102) that transmits microwaves; the microwave transmitting module (102) heats the cigarette (2) by transmitting microwaves.

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