CN-122028822-A - Capacitive sensing method and aerosol generating device performing the method

CN122028822ACN 122028822 ACN122028822 ACN 122028822ACN-122028822-A

Abstract

A method performed by an aerosol-generating device comprises the steps of controlling a signal generating circuit to generate a first signal and a second signal according to a predetermined period, acquiring a reflected signal corresponding to the second signal, and determining capacitance information corresponding to at least a portion of an insertion space of an aerosol-generating article of the aerosol-generating device based on the reflected signal.

Inventors

Pu Xiangzhe
JIN ZHENGHAO
XU ZHANGYUAN
LI YUANJING
ZHANG ZHEHAO
ZHENG ZHENZHE

Assignees

韩国烟草人参公社

Dates

Publication Date: 20260512
Application Date: 20250717
Priority Date: 20240911

Claims (11)

1. A method performed by an aerosol-generating device, characterized in that, The aerosol-generating device comprises: A signal generating circuit that generates a first signal of a first frequency band and a second signal of a second frequency band; A resonance section that resonates the first signal to generate an electric field; a coupler for transmitting the first signal to the resonance part, and The processor may be configured to perform the steps of, The method comprises the following steps: Controlling the signal generating circuit to generate the first signal and the second signal according to a predetermined period; Acquiring a reflected signal corresponding to the second signal, and Based on the reflected signal, capacitance information corresponding to at least a portion of an insertion space of an aerosol-generating article of the aerosol-generating device is determined.
2. The method of claim 1, wherein the step of determining the position of the substrate comprises, The aerosol-generating device further comprises a first antenna for radiating the first signal and the second signal.
3. The method of claim 1, wherein the step of determining the position of the substrate comprises, Heating an aerosol-generating article inserted into the aerosol-generating device using resonance of the first signal in the first frequency band.
4. The method of claim 1, wherein the step of determining the position of the substrate comprises, The method also comprises the following steps: based on the capacitance information, it is determined whether the aerosol-generating article is inserted into the aerosol-generating device.
5. The method of claim 1, wherein the step of determining the position of the substrate comprises, The method also comprises the following steps: Based on the capacitance information, a type of aerosol-generating article to be inserted into the aerosol-generating device is determined.
6. The method of claim 1, wherein the step of determining the position of the substrate comprises, The method also comprises the following steps: determining an amount of change in a dielectric constant of an aerosol-generating article inserted into the aerosol-generating device based on the capacitance information, and Based on the amount of dielectric constant change, it is determined whether a user puffs on the aerosol-generating device.
7. The method of claim 2, wherein the step of determining the position of the substrate comprises, The aerosol-generating device further comprises one or more antennas having a frequency band different from the first frequency band of the first signal.
8. The method of claim 7, wherein the step of determining the position of the probe is performed, The method also comprises the following steps: the signal generating circuit is controlled to generate a target heating signal of a target heating frequency band corresponding to a kind of an aerosol-generating article inserted into the aerosol-generating device, wherein the target heating signal is radiated by the first antenna for radiating the first signal and the second signal, and a target antenna corresponding to the target heating frequency band among the one or more antennas.
9. The method of claim 8, wherein the step of determining the position of the first electrode is performed, The method also comprises the following steps: By controlling a switching circuit connected to the signal generating circuit, the connection between the signal generating circuit and the first antenna and the one or more antennas is controlled.
10. A computer-readable recording medium storing a program for executing the method of claim 1.
11. An aerosol-generating device, characterized in that, Comprising the following steps: A signal generating circuit that generates a first signal of a first frequency band and a second signal of a second frequency band; A resonance section that resonates the first signal to generate an electric field; a coupler for transmitting the first signal to the resonance part, and The processor may be configured to perform the steps of, The processor is configured to: Controlling the signal generating circuit to generate the first signal and the second signal according to a predetermined period; Acquiring a reflected signal corresponding to the second signal, and Based on the reflected signal, capacitance information corresponding to at least a portion of an insertion space of an aerosol-generating article of the aerosol-generating device is determined.

Description

Capacitive sensing method and aerosol generating device performing the method Technical Field The following embodiments relate to a technique of controlling an aerosol-generating device, and in particular to a capacitive sensing technique in a dielectric heating type aerosol-generating device. Background In recent years, demand for electronic cigarette devices is growing. With the increasing demand for electronic cigarette devices, related functions of electronic cigarette devices have also been continuously developed. In particular, related functions based on the kind and characteristics of the electronic cigarette device are continuously developing. There is an increasing need for a system for generating an aerosol by heating a cigarette (or aerosol-generating article) with an aerosol-generating device, rather than by burning the cigarette. Electromagnetic wave heating technology is a technology for heating an object by using a dielectric heating principle. The aerosol-generating article may be rapidly heated using electromagnetic wave heating techniques. Disclosure of Invention Problems to be solved by the invention An embodiment provides an aerosol-generating device capable of heating an aerosol-generating article with a single antenna and sensing a capacitance. An embodiment provides an aerosol-generating device capable of determining whether to insert an aerosol-generating article based on a capacitance sensed with a single antenna. An embodiment provides an aerosol-generating device capable of determining a type of aerosol-generating article based on a capacitance sensed with a single antenna. However, the problem to be solved by the present invention is not limited to the above-mentioned problems, and other technical problems may also exist. Technical means for solving the problems According to an embodiment, a method performed by an aerosol-generating device comprises a signal generating circuit generating a first signal of a first frequency band and a second signal of a second frequency band, a resonance part resonating the first signal to generate an electric field, a coupler transferring the first signal to the resonance part, and a processor, the method comprising the steps of controlling the signal generating circuit to generate the first signal and the second signal according to a predetermined period, acquiring a reflected signal corresponding to the second signal, and determining capacitance information corresponding to at least a part of an insertion space of an aerosol-generating article of the aerosol-generating device based on the reflected signal. According to an embodiment, an aerosol-generating device comprises a signal generating circuit generating a first signal of a first frequency band and a second signal of a second frequency band, a resonance section resonating the first signal to generate an electric field, a coupler transferring the first signal to the resonance section, and a processor configured to control the signal generating circuit to generate the first signal and the second signal according to a predetermined period, to obtain a reflected signal corresponding to the second signal, and to determine capacitive information corresponding to at least a portion of an insertion space of an aerosol-generating article of the aerosol-generating device based on the reflected signal. Effects of the invention According to at least one embodiment of the present disclosure, an aerosol-generating device may be provided that is capable of dielectrically heating an aerosol-generating article with a single antenna and determining capacitive information in parallel with an operation of heating the aerosol-generating article. According to at least one embodiment of the present disclosure, an aerosol-generating device capable of heating an aerosol-generating article with a heating signal of a heating frequency band corresponding to a kind of aerosol-generating article may be provided. Drawings Fig. 1 is a block diagram of an aerosol-generating device according to an embodiment. Fig. 2 is a block diagram of a resonator formed based on a waveguide according to an example. FIG. 3 is a flow chart of a capacitive sensing method according to an embodiment. Fig. 4 is a flowchart of a method for performing based on capacitance information according to an embodiment. Fig. 5 is a flowchart of a method for performing based on capacitance information according to an embodiment. Fig. 6a is a block diagram of an aerosol-generating device comprising a plurality of antennas according to an embodiment. Fig. 6b is a flow chart of a method of controlling an aerosol-generating device comprising a plurality of antennas according to an embodiment. Detailed Description Hereinafter, embodiments disclosed in the present specification will be described in detail with reference to the drawings, and the same or similar constituent elements will be given the same reference numerals regardless of the reference numerals,