Impedance matching method, device and electronic device for high frequency heating smoking device

Abstract

A method, device and electronic device for impedance matching of a high frequency heating smoking device are disclosed, which includes the steps of: obtaining parameter information of a high frequency power source when it is detected that a target cigarette is inserted; controlling the high frequency power source to transmit a predetermined measurement current to the electrode plate, calculating a measured working power corresponding to the predetermined measurement current based on the parameter information, and determining a load impedance of the target cigarette based on the measured working power; and if the load impedance does not match the source impedance of the high frequency power source, generating adjustment information based on the load impedance to adjust the AC frequency of the high frequency power source until the load impedance matches the source impedance. In the present invention, after the target cigarette is inserted into the device, a specific load impedance of the target cigarette is determined by calculation based on the measured working power between the electrode plates, and the load impedance is adjusted by adjusting the AC frequency of the high frequency power source to match the source impedance, thereby achieving optimal power usage efficiency.

Description

[Technical field]

[0001] This application claims priority to a Chinese patent application filed with the China Patent Office on March 17, 2022, bearing application number 202210263803.0, and entitled "Method, device and electronic device for impedance matching of high-frequency heating smoking device", the entire contents of which are incorporated herein by reference.

[0002] The present application relates to the technical field of high frequency heating, and in particular to an impedance matching method, device and electronic device for a high frequency heating smoking device. [Background technology]

[0003] Non-combustion heated tobacco mainly uses an electric heating method, and the electric heating device is heated by a heating body and the heat is transferred to the tobacco body, so there is a problem that the tobacco is not heated enough or too hot. Therefore, there is currently a tobacco device that uses high frequency electric field heating, which significantly reduces the possibility of unnecessary overheating or burning of the outer surface and the risk of only partially heating the inner part of the heated material. The tobacco material body inserted into the smoking device is directly heated without the need to transfer heat from the outside to the inside through a temperature gradient after the surface is heated, so that the possibility of unnecessary overheating of the surface and even burning is significantly reduced. In addition, high frequency heating uses a long wavelength, so the object is heated more uniformly.

[0004] However, since the non-combustion heated cigarette is placed between two plates in the device, when a corresponding high-frequency power is applied between the two electrodes, the high-frequency power source and the tobacco load respectively form a resonant circuit. The resonant impedance characteristics of the tobacco load depend on the physical properties of the non-combustion heated cigarette, and different non-combustion heated cigarettes have different impedances, so that in the actual use process, the impedances of the two resonant circuits formed by the high-frequency power source and the tobacco load of the smoking device are not matched, and the smoking device cannot achieve optimal power usage efficiency. Summary of the Invention [Problem to be solved by the invention]

[0005] To solve the above problems, the embodiments of the present application provide an impedance matching method, device and electronic device for a high frequency heating smoking device. [Means for solving the problem]

[0006] According to a first aspect, an embodiment of the present application provides an impedance matching method for a high frequency heating smoking device, the method comprising: acquiring parameter information of a high frequency generator when it is detected that a target cigarette has been inserted; controlling the high frequency power source to transmit a predetermined measurement current to a plate; calculating a measured operating power corresponding to the predetermined measurement current based on the parameter information; and determining a load impedance of the target cigarette based on the measured operating power; If the load impedance does not match the power source impedance of the high frequency power source, generating adjustment information based on the load impedance, thereby adjusting the AC frequency of the high frequency power source until the load impedance matches the power source impedance.

[0007] Preferably, when it is detected that a target cigarette has been inserted, the step of acquiring parameter information of a high frequency generator comprises: receiving a first control command and activating a radio frequency power source of the smoking article in response to the first control command; controlling the generation of an electric field of a first electric field strength between the plates and monitoring a real-time electric field strength between the plates; If the real-time electric field strength is less than the first electric field strength, determining that a target cigarette has been inserted, and obtaining parameter information of the high frequency power source.

[0008] Preferably, the parameter information includes a rated voltage; the steps of controlling the high frequency power source to transmit a predetermined measurement current to a plate, calculating a measured operating power corresponding to the predetermined measurement current based on the parameter information, and determining a load impedance of the target cigarette based on the measured operating power; controlling the high frequency power supply to transmit a predetermined measurement current to a plate and calculating a measured operating power based on the predetermined measurement current and a rated voltage; determining a load impedance of the target cigarette based on the measured operating power and the rated voltage.

[0009] Preferably, the parameter information further includes the source impedance; When the load impedance does not match the power source impedance of the high frequency power source, the step of generating adjustment information based on the load impedance to adjust the AC frequency of the high frequency power source until the load impedance matches the power source impedance, if the load impedance does not match the power source impedance, determining a cigarette capacitance of the target cigarette based on the load impedance and the AC frequency of the high frequency power source, and generating a first mapping relationship between the load impedance and the AC frequency based on the cigarette capacitance; and adjusting the AC frequency until the load impedance matches the power source impedance by generating adjustment information based on the first mapping relationship.

[0010] Preferably, when it is detected that a target cigarette has been inserted, after the step of obtaining parameter information of the high frequency generator, The method further includes the step of initializing the AC frequency.

[0011] Preferably, the method comprises the steps of: recognizing a tobacco category identification code corresponding to the target tobacco, and recording a second mapping relationship between the tobacco category identification code and the adjustment information; If the tobacco category identification code is recognized again, obtaining the adjustment information based on the second mapping relationship, and responding with the adjustment information.

[0012] Preferably, the method comprises the steps of: obtaining a frequency adjustment range corresponding to the high frequency power source; If the AC frequency corresponding to the adjustment information exceeds the frequency adjustment range, optimizing the adjustment information based on a frequency adjustment range.

[0013] According to a second aspect, an embodiment of the present application provides an impedance matching device for a high frequency heating smoking device, the device comprising: an acquisition module for acquiring parameter information of the high frequency power source when it is detected that the target cigarette is inserted; a control module for controlling the high frequency power source to transmit a predetermined measurement current to a plate, calculating a measured operating power corresponding to the predetermined measurement current based on the parameter information, and determining a load impedance of the target cigarette based on the measured operating power; and an adjustment module that, when the load impedance does not match the power source impedance of the high frequency power source, generates adjustment information based on the load impedance, thereby adjusting the AC frequency of the high frequency power source until the load impedance matches the power source impedance.

[0014] According to a third aspect, an embodiment of the present application provides an electronic device comprising a memory, a processor and a computer program stored in the memory and executable by the processor, the processor, when executing the computer program, performing the steps of the method provided in the first aspect or any one of the possible implementations of the first aspect.

[0015] According to a fourth aspect, an embodiment of the present application provides a computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements the method provided by the first aspect or any one of the possible implementations of the first aspect. Effect of the Invention

[0016] The beneficial effects of the present invention are as follows: different cigarettes have different resonant load characteristics, and the cigarettes in a cigarette are generally a mixture of many kinds of cigarettes, so that it is difficult to predetermine the resonant load characteristics, and therefore it is difficult to predetermine the load impedance of different cigarettes. Therefore, in this application, after the target cigarette is inserted into the device, the specific load impedance of the target cigarette is calculated and determined based on the measured working power between the plates, and the load impedance is adjusted by adjusting the AC frequency of the high frequency power source to match the power source impedance, thereby achieving optimal power usage efficiency. [Brief description of the drawings]

[0017] In order to more clearly explain the technical solutions of the embodiments of the present application, the following briefly introduces the necessary drawings of the embodiments. The drawings described below are only some embodiments of the present application, and those skilled in the art can obtain other drawings based on these drawings on the premise that they do not make efforts worthy of inventive step. [Figure 1] FIG. 2 is a flow diagram of an impedance matching method for a high-frequency heating smoking device provided in an embodiment of the present application. [Diagram 2] FIG. 2 is a structural schematic diagram of an impedance matching device for a high-frequency heating smoking device provided in an embodiment of the present application. [Diagram 3] FIG. 2 is a structural schematic diagram of an electronic device provided by an embodiment of the present application. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0018] The following clearly and completely describes the technical solutions of the embodiments of the present application in combination with the drawings of the embodiments of the present application.

[0019] In the following introduction, the terms "first", "second", etc. are not intended to indicate or imply relative importance, but are merely for description. The following introduction provides multiple embodiments of the present application, and different embodiments may be substituted or combined with each other, so that the present application may include all possible combinations of similar and / or different embodiments described. Thus, if one embodiment includes features A, B, and C, and another embodiment includes features B and D, the present application also includes embodiments having all other possible combinations of one or more of A, B, C, and D, even though it is not explicitly stated for that embodiment in the following content.

[0020] The following description does not limit the scope, applicability or examples of the claims, but provides examples. The functions and arrangements of the elements described may be changed without departing from the scope of the present application. Each step or component may be omitted, replaced or added as appropriate to each example. For example, the methods described may be performed in a different order than described, and various steps may be added, omitted or combined. Also, features related to some example descriptions may be combined with other examples.

[0021] Referring to Figure 1, Figure 1 is a flow diagram of an impedance matching method for a high-frequency heating smoking device provided in an embodiment of the present application. In an embodiment of the present application, the method includes the following steps: S101: When it is detected that a target cigarette is inserted, parameter information of a high frequency power source is obtained.

[0022] The implementation body of the present application may be a controller in a radio frequency heating smoking device.

[0023] In the embodiment of the present application, the high frequency heating smoking device generates an AC current by a built-in high frequency power source, which acts on the electrodes of the smoking device to generate an electric field between the electrodes, and further heats the tobacco inserted between the electrodes. Therefore, the controller first monitors the gap between the electrodes, and when it detects that the target tobacco is inserted between the electrodes, it is considered that the smoking device has already started or will soon start the heating operation. In order to calculate the impedance matching, the controller first obtains parameter information of the high frequency power source, and based on this, determines parameter data such as the output AC frequency and rated voltage of the high frequency power source.

[0024] In one possible embodiment, step S101 includes the steps of: receiving a first control command and activating a radio frequency power source of the smoking article in response to the first control command; controlling the generation of an electric field of a first electric field strength between the plates and monitoring a real-time electric field strength between the plates; if the real-time electric field strength is less than the first electric field strength, determining that a target cigarette has been inserted, and obtaining parameter information of the high frequency power source.

[0025] In the embodiment of the present application, when the smoking tool is not in use, it is in an off state, and when the user clicks the activation button on the smoking tool, the controller receives a first control command. In response to the first control command, the controller can realize the activation of the high frequency power source in the smoking tool, and further activate the smoking tool. After the smoking tool is activated, the controller controls the generation of an electric field with a first electric field strength between the electrodes, and at this time, the electric field is very weak and is mainly used for detecting cigarette insertion. When the target cigarette is inserted between the electrodes, the target cigarette will absorb some of the electric field energy, so that the real-time electric field strength between the electrodes will be significantly weak, and therefore the controller will use it as a standard to determine the insertion of the target cigarette.

[0026] S102: Controlling the high frequency power source to transmit a predetermined measurement current to an electrode plate, calculating a measured operating power corresponding to the predetermined measurement current based on the parameter information, and determining a load impedance of the target cigarette based on the measured operating power.

[0027] In the embodiment of the present application, since non-combustion heated cigarettes are generally manufactured by compounding various kinds of tobacco or essences and flavors, it is difficult to directly determine the resonant load characteristics of the cigarette load based on the physical characteristics of the non-combustion heated cigarette, and it is also difficult to determine the load impedance of the target cigarette. Specifically, after determining that the target cigarette is inserted, the controller controls the high frequency power source to generate a predetermined measurement current, and the predetermined measurement current is set small and is mainly used for measurement calculation, to avoid the target cigarette being heated too early due to the current being too large. After passing the predetermined measurement current, the controller realizes the calculation of the measured working power of the plate based on the magnitude of the predetermined measurement current and the parameter information of the high frequency power source. In addition, for the capacitor of the plate, the measured working power is further related to the load impedance, so that the load impedance of the target cigarette can be determined after determining the measured working power.

[0028] In one possible embodiment, the parameter information includes a rated voltage; the steps of controlling the high frequency power source to transmit a predetermined measurement current to a plate, calculating a measured operating power corresponding to the predetermined measurement current based on the parameter information, and determining a load impedance of the target cigarette based on the measured operating power; controlling the high frequency power supply to transmit a predetermined measurement current to a plate and calculating a measured operating power based on the predetermined measurement current and a rated voltage; determining a load impedance of the target cigarette based on the measured operating power and the rated voltage.

[0029] In the embodiment of the present application, for the high frequency power source, its rated voltage is determined, and according to Thevenin's theorem, the voltage on the plate can be considered as determined. Therefore, the measured working power can be determined based on the product of the predetermined measured current and the rated voltage. In addition, the space between the plates can be considered as a capacitor, and for the capacitor, the measured working power can be further calculated from the product of the square of the voltage and the impedance. Therefore, after determining the measured working power, the load impedance of the target cigarette can be further calculated.

[0030] In one possible embodiment, when it is detected that a target cigarette is inserted, after the step of obtaining parameter information of the high frequency generator, The method further includes the step of initializing the AC frequency.

[0031] In an embodiment of the present application, in order to simplify the calculation process for the load impedance each time and improve the efficiency of data processing, the controller initializes the AC frequency after each target cigarette is inserted, thereby eliminating the influence of adjustments to the AC frequency during the heating process of the previously inserted cigarette.

[0032] S103: If the load impedance does not match the power source impedance of the high frequency power source, adjustment information is generated based on the load impedance, thereby adjusting the AC frequency of the high frequency power source until the load impedance matches the power source impedance.

[0033] In the embodiment of the present application, the power source impedance of the high frequency power source itself is constant, and the load impedance needs to be adjusted to match the load impedance with the power source impedance of the high frequency power source. Since the load impedance and the AC frequency have a negative correlation, when the load impedance is determined, the load impedance can be adjusted by adjusting the frequency of the AC current output from the high frequency power source. The controller generates adjustment information based on the load impedance, and adjusts and controls the AC frequency of the high frequency power source based on the adjustment information until the load impedance matches the power source impedance.

[0034] In one possible embodiment, the parameter information further includes the source impedance; When the load impedance does not match the power source impedance of the high frequency power source, the step of generating adjustment information based on the load impedance to adjust the AC frequency of the high frequency power source until the load impedance matches the power source impedance, if the load impedance does not match the power source impedance, determining a cigarette capacitance of the target cigarette based on the load impedance and the AC frequency of the high frequency power source, and generating a first mapping relationship between the load impedance and the AC frequency based on the cigarette capacitance; and adjusting the AC frequency until the load impedance matches the power source impedance by generating adjustment information based on the first mapping relationship.

[0035] In the embodiment of the present application, the power impedance of the high frequency power source is determined, so that the power impedance can be directly obtained and determined based on the parameter information of the high frequency power source. As for the plate, it can be regarded as a capacitor, and its impedance is a capacitive reactance, where the capacitive reactance Xc=1 / (2πfC), where f is the AC frequency, and C is the capacitor. When the capacitors of different non-combustion heated cigarettes are different and it is difficult to determine the resonant load characteristics, it is difficult to determine the specific capacitor of the non-combustion heated cigarette in advance. Therefore, in the present application, after calculating the current load impedance, the capacitor of the non-combustion heated cigarette can be directly calculated and determined based on the AC frequency currently output from the high frequency power source, and when the capacitor is determined, a first mapping relationship between the load impedance and the AC frequency is determined. The controller adjusts the AC frequency output from the high frequency power source based on the first mapping relationship, so that the load impedance and the power impedance are matched.

[0036] In one possible embodiment, the method comprises: recognizing a tobacco category identification code corresponding to the target tobacco, and recording a second mapping relationship between the tobacco category identification code and the adjustment information; If the tobacco category identification code is recognized again, obtaining the adjustment information based on the second mapping relationship, and responding with the adjustment information.

[0037] In an embodiment of the present application, each non-combustion heated cigarette is marked with a tobacco category identification code in the form of a two-dimensional barcode, etc. After completing the frequency adjustment process for a non-combustion heated cigarette having a certain tobacco category identification code, the controller records a second mapping relationship between the tobacco category identification code and the adjustment information, so that when the user smokes a cigarette of that category again, the controller can directly obtain the adjustment information according to the second mapping relationship to adjust the frequency, thereby improving the data processing efficiency of the smoking device.

[0038] In one possible embodiment, the method comprises: obtaining a frequency adjustment range corresponding to the high frequency power source; If the AC frequency corresponding to the adjustment information exceeds the frequency adjustment range, optimizing the adjustment information based on a frequency adjustment range.

[0039] In the embodiment of the present application, in order to ensure that the smoking article can operate normally for a long period of time, the designer generally pre-designs a corresponding frequency adjustment range according to the specific structure of the smoking article and the high-frequency components used, that is, during the use of the smoking article, the AC frequency should be kept within the frequency adjustment range. When it is detected that the AC frequency corresponding to the adjustment information of a certain category of non-combustion heated tobacco exceeds the frequency adjustment range, the controller optimizes the adjustment information according to the frequency adjustment range to partially reduce the power usage efficiency, thereby ensuring that the final AC operating frequency of the smoking article is within the frequency adjustment range.

[0040] The impedance matching device for high frequency heating smoking device provided in the embodiment of the present application will be described in detail below in conjunction with Fig. 2. Here, the impedance matching device for high frequency heating smoking device in Fig. 2 implements the method in the embodiment of Fig. 1 of the present application, and for ease of explanation, only the relevant parts of the embodiment of the present application are shown, and the specific technical details not disclosed may be referred to the embodiment of Fig. 1 of the present application.

[0041] Please refer to Fig. 2, which is a structural schematic diagram of an impedance matching device for a high-frequency heating smoking device provided in an embodiment of the present application. As shown in Fig. 2, the device includes: an acquisition module 201 for acquiring parameter information of a high frequency power source when it is detected that a target cigarette is inserted; a control module 202 for controlling the RF power source to transmit a predetermined measurement current to a plate, calculating a measured operating power corresponding to the predetermined measurement current based on the parameter information, and determining a load impedance of the target cigarette based on the measured operating power; and an adjustment module 203 that, if the load impedance does not match the power source impedance of the high frequency power source, generates adjustment information based on the load impedance, thereby adjusting the AC frequency of the high frequency power source until the load impedance matches the power source impedance.

[0042] In one possible embodiment, the acquisition module 201: a receiving unit for receiving a first control command and activating a high frequency power source of the smoking article in response to the first control command; a field intensity control unit for controlling the generation of an electric field of a first field intensity between the plates and monitoring the real-time electric field intensity between the plates; and a parameter acquiring unit for determining that a target cigarette has been inserted when the real-time electric field intensity is less than the first electric field intensity, and acquiring parameter information of the high frequency power source.

[0043] In one possible embodiment, the control module 202 is a current control unit for controlling the high frequency power supply to transmit a predetermined measurement current to the plate and for calculating a measured operating power based on the predetermined measurement current and a rated voltage; and a first determination unit that determines a load impedance of the target cigarette based on the measured operating power and the rated voltage.

[0044] In one possible embodiment, the adjustment module 203 is a second determination unit, when the load impedance does not match the power source impedance, for determining a cigarette capacitance of the target cigarette according to the load impedance and the AC frequency of the high frequency power source, and generating a first mapping relationship between the load impedance and the AC frequency according to the cigarette capacitance; a generating unit for generating adjustment information based on the first mapping relationship, thereby adjusting the AC frequency until the load impedance matches the power source impedance.

[0045] In one possible embodiment, the apparatus comprises: The AC frequency control unit further includes an initialization module for initializing the AC frequency.

[0046] In one possible embodiment, the apparatus comprises: a first recognition module for recognizing a tobacco category identification code corresponding to the target tobacco, and recording a second mapping relationship between the tobacco category identification code and the adjustment information; and a second recognition module for obtaining the adjustment information based on the second mapping relationship when the tobacco category identification code is recognized again, and responding to the adjustment information.

[0047] In one possible embodiment, the apparatus comprises: a frequency range acquisition module for acquiring a frequency adjustment range corresponding to the high frequency power source; and an optimization module for optimizing the adjustment information based on a frequency adjustment range when the AC frequency corresponding to the adjustment information exceeds the frequency adjustment range.

[0048] As will be understood by those skilled in the art, the technical solutions of the embodiments of the present application can be realized by software and / or hardware. In this specification, a "unit" and a "module" refer to software and / or hardware that can be completed independently or cooperate with other components to complete a specific function, and the hardware can be, for example, a field-programmable gate array (FPGA), an integrated circuit (IC), etc.

[0049] Each processing unit and / or module in the embodiments of the present application may be realized by a simulated circuit that realizes the functions described in the embodiments of the present application, or may be realized by software that executes the functions described in the embodiments of the present application.

[0050] Please refer to Fig. 3, which is a structural schematic diagram of an electronic device related to the embodiment of the present application, which can implement the method of the embodiment of Fig. 1. As shown in Fig. 3, the electronic device 300 includes at least one central processing unit 301, at least one network interface 304, a user interface 303, a memory 305, and at least one communication bus 302.

[0051] The communication bus 302 is used to realize communication between these components.

[0052] The user interface 303 includes a display and a camera, and preferably, the user interface 303 may further include a standard wired interface and a wireless interface.

[0053] Preferably, the network interface 304 may include a standard wired interface, a wireless interface (eg, a WI-FI interface).

[0054] The central processing unit 301 includes one or more processing cores. The central processing unit 301 connects each part in the overall electronic device 300 using various interfaces and circuits, and runs or executes instructions, programs, code sets or instruction sets stored in the memory 305 to access data stored in the memory 305, thereby performing various functions of the terminal 300 and processing data. Preferably, the central processing unit 301 may be realized in at least one hardware form of a digital signal processing (DSP), a field programmable gate array (FPGA), or a programmable logic array (PLA). The central processing unit 301 is integrated with one or some combination of a central processing unit (CPU), a graphics processing unit (GPU), a modem, etc. The CPU mainly processes an operating system, a user interface, and application programs, the GPU renders and draws the display contents, and the modem processes wireless communication. Here, the modem may not be integrated into the central processing unit 301, but may be realized separately on a single chip.

[0055] The memory 305 may include a random access memory (RAM) or a read-only memory (Read-Only Memory). Preferably, the memory 305 includes a non-transitory computer-readable storage medium. The memory 305 stores instructions, programs, codes, code sets, or instruction sets. The memory 305 includes instructions for implementing an operating system, instructions for at least one function (e.g., touch control function, audio playback function, image playback function, etc.), a program storage area for storing instructions for implementing each of the above method embodiments, and a data storage area for storing data related to each of the above method embodiments. Preferably, the memory 305 may be at least one storage device separate from the central processing unit 301. As shown in FIG. 3, the memory 305 as a computer storage medium may include an operating system, a network communication module, a user interface module, and program instructions.

[0056] In the electronic device 300 of FIG. 3, the user interface 303 mainly provides an input interface for the user, and receives data input by the user. The central processing unit 301 calls the impedance matching application program for the high-frequency heating smoking device stored in the memory 305, specifically: obtaining parameter information of the high frequency generator when it is detected that the target cigarette has been inserted; controlling the high frequency power source to transmit a predetermined measurement current to a plate; calculating a measured operating power corresponding to the predetermined measurement current based on the parameter information; and determining a load impedance of the target cigarette based on the measured operating power; If the load impedance does not match the power source impedance of the high frequency power source, an operation of generating adjustment information based on the load impedance and adjusting the AC frequency of the high frequency power source until the load impedance matches the power source impedance is performed.

[0057] The present application further provides a computer readable storage medium having a computer program stored thereon, which, when executed by a processor, realizes the steps of the above method. The computer readable storage medium may include, but is not limited to, any type of disk, such as a floppy disk, an optical disk, a DVD, a CD-ROM, a microdrive, a magneto-optical disk, a ROM, a RAM, an EPROM, an EEPROM, a DRAM, a VRAM, a flash storage device, a magnetic or optical card, a nanosystem (including a molecular memory IC), or any type of medium or device for storing instructions and / or data.

[0058] For ease of description, each of the above method embodiments is depicted as a series of operations, but those skilled in the art will appreciate that the present application is not limited to the order of operations described, since some steps may be performed in other orders or simultaneously, according to the present application. Furthermore, those skilled in the art will appreciate that the embodiments described herein are preferred embodiments, and that the operations and modules involved are not necessarily required by the present application.

[0059] In the above embodiments, the description of each embodiment is focused on the main points, and for the parts not described in detail in one embodiment, reference may be made to the relevant descriptions of other embodiments.

[0060] In some embodiments provided by the present application, the disclosed devices may be realized in other forms. For example, the device embodiments described above are merely exemplary, for example, the division of the units is merely a division of logical functions, and in actual implementation, there may be other division methods, for example, multiple units or components may be integrated or combined with other systems, or some features may be omitted or not implemented. In addition, the couplings or direct couplings or communication connections between the shown or discussed mutually may be indirect couplings or communication connections through some service interfaces, devices or units, and may be electrical or other forms.

[0061] The units described as individual components may or may not be physically separated, and the components shown as units may or may not be physical units, i.e., they may be located in one place or distributed among multiple network units. Based on actual needs, some or all of the units can be selected to achieve the objective of the solution of the embodiment.

[0062] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, each unit may exist physically as an individual unit, or two or more units may be integrated into one unit. The integrated units may be realized in the form of hardware or software functional units.

[0063] The integrated unit may be realized in the form of a software functional unit and stored in one computer-readable memory when sold or used as an independent product. Based on this understanding, the essence of the technical solution of the present application, or a part that contributes to the prior art, or all or a part of the technical solution may be embodied in the form of a software product, and the computer software product is stored in one memory and includes some instructions to make a computer device (such as a personal computer, a server, or a network device) execute all or a part of the steps of the method described in each embodiment of the present application. The memory includes a medium capable of storing program code, such as a USB memory, a read-only memory (ROM), a random access memory (RAM), a portable hard disk, a magnetic disk, or an optical disk.

[0064] As can be understood by those skilled in the art, all or some of the steps in each method of the above embodiments can be completed by instructing relevant hardware by a program, and the program can be stored in a computer-readable memory, which can include a flash memory, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, etc.

[0065] The above is merely an exemplary embodiment of the present disclosure, without limiting the scope of the present disclosure. That is, any equivalent changes and modifications completed based on the teachings of the present disclosure are within the scope of the present disclosure. After considering the specification and practicing the disclosure, a person skilled in the art can easily come up with other implementation solutions of the present disclosure. The present application is intended to cover any variations, uses or adaptations of the present disclosure, which variations, uses or adaptations follow the general principles of the present disclosure and include common common knowledge or ordinary technical means in the art that are not described in the present disclosure. The specification and examples are merely illustrative, and the scope and spirit of the present disclosure are limited by the claims.

Claims

1. A method for impedance matching of a high-frequency heating smoking device, comprising: acquiring parameter information of a high frequency generator when it is detected that a target cigarette has been inserted; controlling the high frequency power source to transmit a predetermined measurement current to a plate; calculating a measured operating power corresponding to the predetermined measurement current based on the parameter information; and determining a load impedance of the target cigarette based on the measured operating power; and if the load impedance does not match the source impedance of the high frequency power source, generating adjustment information based on the load impedance, thereby adjusting the AC frequency of the high frequency power source until the load impedance matches the source impedance.

2. When it is detected that the target cigarette is inserted, the step of obtaining parameter information of the high frequency generator includes: receiving a first control command and activating a radio frequency power source of the smoking article in response to the first control command; controlling a field having a first field strength between the plates and monitoring a real-time field strength between the plates; The method of claim 1, further comprising: determining that a target cigarette has been inserted when the real-time electric field strength is less than the first electric field strength, and obtaining parameter information of the high-frequency generator.

3. the parameter information includes a rated voltage; the steps of controlling the high frequency power source to transmit a predetermined measurement current to a plate, calculating a measured operating power corresponding to the predetermined measurement current based on the parameter information, and determining a load impedance of the target cigarette based on the measured operating power; controlling the high frequency power supply to transmit a predetermined measurement current to a plate and calculating a measured operating power based on the predetermined measurement current and a rated voltage; and determining a load impedance of the target cigarette based on the measured operating power and the rated voltage.

4. the parameter information further includes the source impedance; When the load impedance does not match the power source impedance of the high frequency power source, the step of generating adjustment information based on the load impedance to adjust the AC frequency of the high frequency power source until the load impedance matches the power source impedance, if the load impedance does not match the power source impedance, determining a tobacco capacitance of the target cigarette based on the load impedance and the AC frequency of the high frequency power source, and generating a first mapping relationship between the load impedance and the AC frequency based on the tobacco capacitance; and generating adjustment information based on the first mapping relationship to adjust the AC frequency until the load impedance matches the source impedance.

5. If it is detected that the target cigarette is inserted, after the step of obtaining parameter information of the high frequency generator, 2. The method of claim 1, further comprising the step of initializing the AC frequency.

6. The method comprises: recognizing a tobacco category identification code corresponding to the target tobacco, and recording a second mapping relationship between the tobacco category identification code and the adjustment information; 2. The method of claim 1, further comprising: if the tobacco category identification code is recognized again, obtaining the adjustment information based on the second mapping relationship, and responding to the adjustment information.

7. The method comprises: obtaining a frequency adjustment range corresponding to the high frequency power source; 2. The method of claim 1, further comprising: optimizing the adjustment information based on a frequency adjustment range when the AC frequency corresponding to the adjustment information exceeds the frequency adjustment range.

8. An impedance matching device for a high frequency heating smoking device, comprising: an acquisition module for acquiring parameter information of the high frequency power source when it is detected that the target cigarette is inserted; a control module for controlling the high frequency power source to transmit a predetermined measurement current to a plate, calculating a measured operating power corresponding to the predetermined measurement current based on the parameter information, and determining a load impedance of the target cigarette based on the measured operating power; and an adjustment module that, when the load impedance does not match the power source impedance of the high frequency power source, generates adjustment information based on the load impedance, thereby adjusting the AC frequency of the high frequency power source until the load impedance matches the power source impedance.

9. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable by the processor, the electronic device being characterized in that, when the processor executes the computer program, the electronic device realizes the steps of the method according to any one of claims 1 to 7.

10. A computer-readable storage medium having a computer program stored thereon, the computer program implementing the steps of the method according to any one of claims 1 to 7 when executed by a processor.

Images