CN-122004543-A - Electronic atomizer and atomization substrate detection method and system thereof

CN122004543ACN 122004543 ACN122004543 ACN 122004543ACN-122004543-A

Abstract

The application relates to the technical field of detection of electronic atomizers and discloses an electronic atomizer and an atomized substrate detection method and system thereof, wherein the electronic atomizer comprises a liquid storage cavity, an image detection module and an infrared light source, wherein the bottom of the liquid storage cavity is provided with a light transmission area, the image detection module is arranged below the liquid storage cavity and is opposite to the light transmission area, and the method comprises the steps of controlling the infrared light source to emit infrared light to the light transmission area of the liquid storage cavity; the method comprises the steps of collecting an optical image formed by infrared light reflected at the interface of the bottom of a liquid storage cavity after passing through a light transmission area through an image detection module, acquiring image characteristic parameters reflecting the existence state of an atomized matrix based on the optical image, comparing the image characteristic parameters with preset depletion conditions, and determining the depletion state of the atomized matrix. The application can effectively solve the problems of misjudgment or missed judgment of the atomization matrix consumption caused by detection dead zone, easy interference of tobacco tar components and easy damage of a sensor in the prior art, thereby realizing accurate identification and reliable dry burning prevention control of residual liquid at the bottom of the liquid storage cavity.

Inventors

YANG ZHENG
WEN XINGHUA

Assignees

深圳市汇春科技股份有限公司

Dates

Publication Date: 20260512
Application Date: 20260126

Claims (10)

1. The utility model provides a fog matrix detection method in electron atomizer, its characterized in that, electron atomizer includes that the bottom is equipped with the liquid storage chamber of printing opacity region, and set up in the liquid storage chamber below just right printing opacity region's image detection module and infrared light source, the method includes: Controlling the infrared light source to emit infrared light to the light-transmitting area of the liquid storage cavity; collecting an optical image formed by the reflection of the infrared light at the interface at the bottom of the liquid storage cavity after passing through the light transmission area through the image detection module; And acquiring an image characteristic parameter reflecting the existence state of the atomized substrate based on the optical image, and comparing the image characteristic parameter with a preset depletion condition to determine the depletion state of the atomized substrate.
2. The method for detecting a atomized substrate in an electronic atomizer according to claim 1, wherein the image detection module is arranged in parallel with the infrared light source, and an isolation structure for blocking direct light coupling is provided between the image detection module and the infrared light source.
3. The method of claim 2, wherein the light transmissive region comprises a first light transmissive region and a second light transmissive region, the infrared light source is oriented toward the first light transmissive region, and the image detection module is oriented toward the second light transmissive region.
4. The method of detecting a hazy substrate in an electronic nebulizer of claim 1, wherein said image characteristic parameter comprises at least two of an average gray value, a highlight pixel duty cycle, and an image energy; the obtaining, based on the optical image, an image characteristic parameter reflecting the existence state of the atomized substrate includes: filtering the optical image to obtain a target detection area image; And determining the average gray value, the high brightness pixel duty ratio and the image energy according to the gray values of all pixel points in the target detection area image.
5. The method for detecting a misted substrate in an electronic atomizer of claim 1 further comprising: Executing full-cavity calibration operation when the electronic atomizer is powered on for the first time, and recording reference values of the image characteristic parameters in a full-cavity state; And in the subsequent detection process, comparing the real-time extracted image characteristic parameters with the change rate of the reference value, and determining that the atomized matrix in the liquid storage cavity is exhausted when the change rate reaches a set threshold value.
6. The method of claim 1, further comprising the act of generating a dry heat indication signal and triggering a shut-off of an electrical circuit to the atomizing assembly after determining that the atomized substrate is depleted.
7. The method of claim 5, wherein the predetermined depletion condition comprises at least two trigger phases, the rate of change threshold for each trigger phase increases in sequence, and the degree of urgency of the triggered system response action increases as the rate of change threshold increases.
8. The utility model provides a atomizing matrix detecting system in electron atomizer, its characterized in that, electron atomizer includes that the bottom is equipped with the stock solution chamber in printing opacity region, and sets up stock solution chamber below just to printing opacity region's image detection module and infrared light source, the system includes: The infrared light source is used for emitting infrared light to the light-transmitting area of the liquid storage cavity; the image detection module is used for collecting an optical image formed by the reflection of the infrared light at the interface at the bottom of the liquid storage cavity after passing through the light transmission area; The image detection module is further used for acquiring image characteristic parameters reflecting the existence state of the atomized substrate based on the optical image, comparing the image characteristic parameters with preset depletion conditions and determining the depletion state of the atomized substrate.
9. The system of claim 8, wherein the image detection module is further configured to perform a full-cavity calibration operation when powered on for the first time, record a reference value of each image characteristic parameter in a full-cavity state, compare the image characteristic parameter extracted in real time with a change rate of the reference value in a subsequent detection process, determine that the atomized substrate is exhausted when the change rate reaches a set threshold, and generate a dry-fire indication signal.
10. An electronic nebulizer comprising the nebulized substrate detection system, the reservoir, and the heating assembly of any one of claims 8-9; When the atomized matrix detection system detects that the atomized matrix in the liquid storage cavity is exhausted, a dry combustion method indication signal is generated and triggers the action of cutting off a power supply loop of the atomizing assembly so as to cut off the power supply of the heating assembly.

Description

Electronic atomizer and atomization substrate detection method and system thereof Technical Field The application relates to the technical field of detection of electronic atomizers, in particular to an electronic atomizer and an atomized substrate detection method and system thereof. Background With the widespread use of electronic atomizers, the dry burning phenomenon of the heating assembly that continues to operate after the atomized substrate is exhausted has become a key issue affecting product safety and user experience. The dry burning not only easily causes the damage of the heating wire, but also can generate harmful gas to harm the health of users. The prior detection technology mainly comprises two types of contact type and non-contact type. The contact method such as a buoyancy switch or a resistance probe needs a sensor to directly contact tobacco tar, is easy to lose efficacy due to adhesion and corrosion after long-term use, has short service life and is difficult to maintain, and the non-contact method such as capacitance induction or infrared transmission avoids physical contact, but has detection dead areas, and is difficult to accurately identify and easy to cause misjudgment particularly when the tobacco tar is only left at the bottom of a liquid storage cavity. In addition, these methods rely on single physical parameters (such as capacitance or transmitted light intensity) to determine, and are easily interfered by factors such as tobacco tar component, color, bubbles and ambient temperature, and have insufficient stability. Disclosure of Invention In view of the above, the embodiment of the application provides an electronic atomizer and an atomized substrate detection method and system thereof, which can effectively solve the problems of misjudgment or missed judgment of atomized substrate exhaustion caused by detection dead zone, easy interference of tobacco tar components and easy damage of a sensor in the prior art, thereby realizing accurate identification and reliable dry burning prevention control of residual liquid at the bottom of a liquid storage cavity. In a first aspect, an embodiment of the present application provides a method for detecting a atomized substrate in an electronic atomizer, where the electronic atomizer includes a liquid storage cavity having a light-transmitting area at a bottom thereof, and an image detection module and an infrared light source disposed below the liquid storage cavity and facing the light-transmitting area, the method includes: Controlling the infrared light source to emit infrared light to the light-transmitting area of the liquid storage cavity; collecting an optical image formed by the reflection of the infrared light at the interface at the bottom of the liquid storage cavity after passing through the light transmission area through the image detection module; And acquiring an image characteristic parameter reflecting the existence state of the atomized substrate based on the optical image, and comparing the image characteristic parameter with a preset depletion condition to determine the depletion state of the atomized substrate. In some embodiments, the image detection module is arranged in parallel with the infrared light source, and an isolation structure for blocking direct light coupling is arranged between the image detection module and the infrared light source. In some embodiments, the light-transmitting region comprises a first light-transmitting region and a second light-transmitting region, the infrared light source faces the first light-transmitting region, and the image detection module faces the second light-transmitting region. In some embodiments, the image characteristic parameters include at least two of an average gray value, a highlight pixel duty cycle, and image energy; the obtaining, based on the optical image, an image characteristic parameter reflecting the existence state of the atomized substrate includes: filtering the optical image to obtain a target detection area image; And determining the average gray value, the high brightness pixel duty ratio and the image energy according to the gray values of all pixel points in the target detection area image. In some embodiments, the method further comprises the steps of executing full-cavity calibration operation when the electronic atomizer is powered on for the first time, and recording reference values of the image characteristic parameters in a full-cavity state; And in the subsequent detection process, comparing the real-time extracted image characteristic parameters with the change rate of the reference value, and determining that the atomized matrix in the liquid storage cavity is exhausted when the change rate reaches a set threshold value. In some embodiments, after determining that the nebulized matrix is depleted, further comprising an act of generating a dry-fire indication signal and triggering a shut-off of the power circuit of the nebulizing asse