阅读说明：本技术 电子烟的检测装置、检测方法以及电子烟 (Electronic cigarette detection device, detection method and electronic cigarette ) 是由 陈智崇 吴立德 于 2020-04-30 设计创作，主要内容包括：本发明提供了一种电子烟的检测装置、电子烟的检测方法以及电子烟,所述电子烟的检测装置包括压电薄膜、控制模块以及发热组件,用于根据形变状态生成电荷信号；用于接收所述电荷信号,并根据所述电荷信号生成抽烟信号；用于接收所述抽烟信号,在接收到所述抽烟信号的情况下,加热电子烟的烟油或雾化器。本发明技术方案利用所述压电薄膜的压电效应,当所述压电薄膜发生形变时会产生电荷信号,所述控制模块则通过所述电荷信号控制所述发热组件的导通,从而实现用户使用电子烟吸烟的功能。通过所述压电薄膜通过形变自发电,无需再连接电源供电,从而节省了制作成本,同时提高了电子烟的续航能力。(The invention provides a detection device of an electronic cigarette, a detection method of the electronic cigarette and the electronic cigarette, wherein the detection device of the electronic cigarette comprises a piezoelectric film, a control module and a heating component, and is used for generating a charge signal according to a deformation state; the smoking device is used for receiving the charge signal and generating a smoking signal according to the charge signal; and the smoke generating device is used for receiving the smoking signal and heating the tobacco tar or the atomizer of the electronic cigarette under the condition of receiving the smoking signal. According to the technical scheme, the piezoelectric effect of the piezoelectric film is utilized, a charge signal is generated when the piezoelectric film deforms, and the control module controls the conduction of the heating component through the charge signal, so that the function of smoking by a user through the electronic cigarette is achieved. Through piezoelectric film is through deformation spontaneous electricity, need not to connect the power supply power again to save the cost of manufacture, improved the duration of electronic cigarette simultaneously.)

1. A detection device of an electronic cigarette, comprising:

the piezoelectric film is used for generating a charge signal according to the deformation state;

the control module is used for receiving the charge signal and generating a smoking signal according to the charge signal;

and the heating component is used for receiving the smoking signal and heating the tobacco tar or the atomizer of the electronic cigarette under the condition of receiving the smoking signal.

2. The device according to claim 1, wherein the piezoelectric film comprises a positive electrode layer and a negative electrode layer connected to the positive electrode layer, and the charge signal is generated when the positive electrode layer or the negative electrode layer is deformed;

the positive electrode layer and the negative electrode layer are sequentially arranged along the air inlet direction of the electronic cigarette.

3. The detection apparatus of an electronic cigarette according to claim 1, wherein the control module comprises:

and the judging element is used for receiving the charge signal, judging the type of the charge signal, generating a smoking signal according to the type of the charge signal and sending the smoking signal to the heating component.

4. The electronic cigarette detection device according to claim 3, wherein the determination element is further configured to determine a magnitude of the potential difference of the charge signal, generate the smoking signal according to the magnitude of the potential difference of the charge signal, and send the smoking signal to the heat generating component.

5. The detection apparatus of an electronic cigarette according to claim 1, wherein the heat generating component comprises:

the heating element is used for heating the tobacco tar or the atomizer of the electronic cigarette;

and the diode is used for receiving the smoking signal and conducting the heating piece under the condition of receiving the smoking signal.

6. The detection method of the electronic cigarette is characterized by comprising the following steps:

acquiring a charge signal generated by deformation of the piezoelectric film;

generating a smoking signal according to the charge signal;

and the smoke exhaust signal controls the heating component to heat the tobacco tar or the atomizer of the electronic cigarette.

7. The method of claim 6, wherein the step of generating a smoking signal from the charge signal comprises:

judging the type of the charge signal;

generating the smoking signal according to the type of the charge signal.

8. The method of claim 7, wherein the step of generating the smoking signal according to the type of the charge signal comprises:

generating the smoking signal when the charge signal is of a positive charge type.

9. The method of claim 6, wherein the step of generating a smoking signal from the charge signal comprises:

judging the magnitude of the potential difference of the charge signal;

and generating the smoking signal according to the magnitude of the potential difference of the charge signal.

10. An electronic cigarette, characterized in that the electronic cigarette comprises a housing and a detection device of the electronic cigarette according to any of claims 1-5, the detection device of the electronic cigarette being arranged on the housing.

Technical Field

The invention relates to the technical field of electronic cigarette equipment, in particular to a detection device of an electronic cigarette, a detection method of the electronic cigarette and the electronic cigarette.

Background

In the electronic cigarette, the sensor operates as a key component, and the electronic cigarette in the prior art generally adopts the sensor to detect whether the user has a smoking action, and then can perform a subsequent action, for example, after detecting that the user is smoking, the electronic cigarette controls to heat the smoke and the like. However, in the prior art, most of the electronic cigarettes use an airflow sensor (microphone) or a pressure sensor to detect whether the user has the action of smoking, and the airflow sensor (microphone) or the pressure sensor is a complete finished module and needs to provide power, which is expensive in cost and structure, and has a high power consumption rate, thereby reducing the endurance of the electronic cigarette.

Disclosure of Invention

The invention mainly aims to provide an electronic cigarette detection device, an electronic cigarette detection method and an electronic cigarette, and aims to solve the technical problem that the electronic cigarette in the prior art is high in power consumption.

In order to achieve the above object, the present invention provides a detection device for an electronic cigarette, which includes a piezoelectric film, a control module, and a heating element, and is configured to generate a charge signal according to a deformation state; the smoking device is used for receiving the charge signal and generating a smoking signal according to the charge signal; and the smoke generating device is used for receiving the smoking signal and heating the tobacco tar or the atomizer of the electronic cigarette under the condition of receiving the smoking signal.

Optionally, the piezoelectric film includes a positive electrode layer and a negative electrode layer connected to the positive electrode layer, and the charge signal is generated when the positive electrode layer or the negative electrode layer is deformed; the positive electrode layer and the negative electrode layer are sequentially arranged along the air inlet direction of the electronic cigarette.

Optionally, the control module includes a determining element, configured to receive the charge signal, determine a type of the charge signal, generate a smoking signal according to the type of the charge signal, and send the smoking signal to the heating component.

Optionally, the judging element is further configured to judge a magnitude of the potential difference of the charge signal, generate the smoking signal according to the magnitude of the potential difference of the charge signal, and send the smoking signal to the heating component.

Optionally, the heating component comprises a heating element and a diode, and is used for heating the tobacco tar or the atomizer of the electronic cigarette; the heating element is used for receiving the smoking signal and conducting the heating element under the condition of receiving the smoking signal.

In addition, in order to solve the above problem, the present invention further provides a method for detecting an electronic cigarette, where the method for detecting an electronic cigarette includes the following steps:

acquiring a charge signal generated by deformation of the piezoelectric film;

generating a smoking signal according to the charge signal;

and the smoke exhaust signal controls the heating component to heat the tobacco tar or the atomizer of the electronic cigarette.

Optionally, the step of generating a smoking signal from the charge signal comprises:

judging the type of the charge signal;

generating the smoking signal according to the type of the charge signal.

Optionally, the step of converting into the smoking signal according to the type of the charge signal comprises:

generating the smoking signal when the charge signal is of a positive charge type.

Optionally, the step of generating a smoking signal from the charge signal comprises:

judging the magnitude of the potential difference of the charge signal;

and generating the smoking signal according to the magnitude of the potential difference of the charge signal.

In addition, in order to solve the above problem, the present invention further provides an electronic cigarette, which includes a housing and the detection device of the electronic cigarette, where the detection device of the electronic cigarette is disposed on the housing.

According to the technical scheme, the piezoelectric effect of the piezoelectric film is utilized, a charge signal is generated when the piezoelectric film deforms, and the control module controls the conduction of the heating component through the charge signal, so that the function of smoking by a user through the electronic cigarette is achieved. Through piezoelectric film is through deformation spontaneous electricity, need not to connect the power supply power again to save the cost of manufacture, improved the duration of electronic cigarette simultaneously.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a detection device of an electronic cigarette according to the present invention;

FIG. 2 is a schematic diagram of the state of the piezoelectric film of the detecting device of the present invention;

figure 3 is a schematic flow chart of a first embodiment of the detection method of the electronic cigarette according to the present invention;

figure 4 is a schematic flow chart of a second embodiment of the detection method of the electronic cigarette according to the present invention;

figure 5 is a schematic flow chart of a method for detecting an electronic cigarette according to a third embodiment of the present invention;

fig. 6 is a schematic flow chart of a detection method of an electronic cigarette according to a fourth embodiment of the invention.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				10	Piezoelectric film	11	Positive electrode layer
12	Negative electrode layer	20	Control module
				21	Judgment element	30	Heating assembly
31	Heating element	32	Diode with a high-voltage source

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

The invention provides a detection device of an electronic cigarette, please refer to fig. 1 and 2, the detection device of the electronic cigarette comprises a piezoelectric film 10, a control module 20 and a heating element 30, and is used for generating a charge signal according to a deformation state; the smoking device is used for receiving the charge signal and generating a smoking signal according to the charge signal; and the smoke generating device is used for receiving the smoking signal and heating the tobacco tar or the atomizer of the electronic cigarette under the condition of receiving the smoking signal.

As an example, the detection device of the electronic cigarette may be arranged at the air inlet position of the electronic cigarette. In practical application, the lung capacity of an adult male is about 3500 to 4000 milliliters; about 2500-3000 ml for an adult woman, so that the intensity of the airflow generated when the user inhales the electronic cigarette is enough to drive the piezoelectric film 10 to vibrate and deform. When a user inhales, the airflow strength is applied to the piezoelectric film 10, so that the piezoelectric film 10 is vibrated and deformed, the centers of positive and negative charges in the piezoelectric film 10 are relatively displaced and polarized, bound charges with opposite signs appear on the two end surfaces of the piezoelectric film, a change in potential difference occurs between the two end surfaces of the piezoelectric film 10, that is, the charge signal is generated, and the density of the charges is proportional to the stress acting on the piezoelectric film 10. The piezoelectric film 10 is an important carrier for energy conversion and signal transmission.

The piezoelectric film 10 is electrically connected to the control module 20, when the charge signal is generated on the piezoelectric film 10, the piezoelectric film 10 transmits the potential difference of the charge signal to the control module 20, and when the charge signal is received by the control module 20, the smoke signal is generated and sent to the heating element 30, so that the heating element 30 is turned on to heat the tobacco tar or the atomizer, thereby realizing the function of smoking by the user. In this embodiment, the control module 20 further needs to determine whether to generate the smoking signal according to the charge signal, for example, determine the magnitude, the positive polarity, and the negative polarity of the potential difference on the charge signal, so as to prevent the piezoelectric film 10 from being triggered by mistake, which causes the heating element 30 to be turned on and burn the electronic cigarette.

As another embodiment, the detection device of the electronic cigarette may be disposed on a housing of the electronic cigarette, and when a user needs to smoke, the user can press the piezoelectric film 10 by himself to vibrate and deform the piezoelectric film 10, so that a change in potential difference occurs between two end surfaces of the piezoelectric film 10, that is, the charge signal is generated. The piezoelectric film 10 is electrically connected to the control module 20, when the charge signal is generated on the piezoelectric film 10, the charge signal is transmitted to the control module 20, and when the charge signal is received by the control module 20, the smoke signal is generated and transmitted to the heating element 30, so that the heating element 30 is turned on to heat the tobacco tar or the atomizer, thereby realizing the function of smoking for the user. In this embodiment, the control module 20 further needs to determine whether to generate the smoking signal according to the charge signal, for example, determine the magnitude, the sign, and the like of the charge signal, so as to prevent the piezoelectric film 10 from being triggered by mistake, so that the heating element 30 is turned on and burns out the electronic cigarette.

In the above process, according to the technical scheme of the invention, by using the piezoelectric effect of the piezoelectric film 10, when the piezoelectric film 10 deforms, a charge signal is generated, and the control module 20 controls the conduction of the heating component 30 through the charge signal, so that the function of smoking the electronic cigarette by a user is realized. Through piezoelectric film 10 is through deformation spontaneous electricity, need not to connect the power supply power again to save the cost of manufacture, improved the duration of an electronic cigarette simultaneously.

Specifically, referring to fig. 2, the piezoelectric film 10 includes a positive electrode layer 11 and a negative electrode layer 12 connected to the positive electrode layer 11, and generates the charge signal when the positive electrode layer 11 or the negative electrode layer 12 is deformed; the positive electrode layer 11 and the negative electrode layer 12 are sequentially arranged along the air inlet direction of the electronic cigarette. When the positive electrode layer 11 and the negative electrode layer 12 of the piezoelectric film 10 are deformed due to vibration, a change in potential difference occurs between the two end surfaces of the piezoelectric film 10, that is, the charge signal is generated. However, the piezoelectric film 10 vibrates in different directions and generates different potential differences, and when the piezoelectric film 10 protrudes towards the negative electrode layer 12, the potential difference of the charge signal is greater than zero (as shown in fig. 2-b); when the piezoelectric film 10 protrudes towards the positive electrode layer 11, then the potential difference of the charge signal is less than zero (fig. 2-c).

In this embodiment, since the electronic cigarette detection device is not powered from the outside, but is designed for only a positive power supply to reduce power consumption, that is, only amplifies a positive voltage, the piezoelectric film 10 needs to protrude toward the negative electrode layer 12 to make the potential difference of the charge signal greater than zero, so as to ensure that the electronic cigarette detection device operates normally. Will positive pole layer 11 negative pole layer 12 sets gradually along the direction of admitting air of electron cigarette to when the user smokes, the stress that produces along with the air current then drives towards the direction of admitting air of electron cigarette piezoelectric film 10 is followed negative pole layer 12 is protruding, thereby realizes piezoelectric film 10 is when the user smokes the electric potential difference of charge signal is greater than zero. It is understood that when the piezoelectric film 10 is disposed on the casing of the electronic cigarette, one side of the positive electrode layer 11 is disposed on the outside, and the negative electrode layer 12 is disposed on the inside, so that when a user presses the piezoelectric film 10, the piezoelectric film 10 protrudes toward the negative electrode layer 12.

When the cigarette lighting detection device has other external power sources, the order of the positive electrode layer 11 and the negative electrode layer 12 can be changed, so as to meet different application scene requirements.

The piezoelectric thin film 10 of the present embodiment can be divided into three types according to the types of the manufacturing materials, one is a piezoelectric polycrystal, for example: barium titanate (BaTiO3, BT), lead titanate (PbTiO3, PT), or lead zirconate titanate (pb (zrti) O3, PZT); two are piezoelectric polymers, for example: polyvinylidene fluoride (PVDF) and its copolymers, polyvinyl fluoride, polyvinyl chloride, poly-gamma-methyl-L-glutamate, nylon-11, or the like; the third is a piezoelectric composite material, which is compounded by two-phase or multi-phase materials, such as: piezoelectric ceramics (PZT) and polymers (PVDF or epoxy resin). The present invention includes, but is not limited to, the above solutions, and the piezoelectric film 10 may also be made of other materials, only if the piezoelectric film 10 has the piezoelectric effect.

The piezoelectric film 10 of the present embodiment can be manufactured by three types of deposition process technologies, one is a Sol-Gel method (Sol-Gel Mod), which has the advantages of simple process, low cost and easily controlled components; the second is Metal Organic Chemical-Vapor Deposition (MOCVD), which has the advantage of good uniformity and step coverage, but the process and equipment costs are expensive; in this embodiment, the piezoelectric film 10 may be manufactured by the sol-gel method, so that the manufacturing cost of the electronic cigarette detection device is reduced. In addition, the present invention includes, but is not limited to, the above-mentioned embodiments, and the piezoelectric film 10 may also be manufactured by Physical Vapor Deposition (PVD), Sputtering, Pulsed Laser Deposition (PLD), or the like.

Specifically, the control module 20 includes a determining element 21, configured to receive the charge signal, determine a type of the charge signal, generate a smoking signal according to the type of the charge signal, and send the smoking signal to the heat generating component 30.

Because the piezoelectric film 10 has different generated potential differences in different vibration directions, when a user inhales or exhales on the electronic cigarette, the piezoelectric film 10 vibrates and deforms along with the airflow flowing direction, so that the potential differences of the charge signals are different when the user inhales or exhales on the electronic cigarette. Therefore, in this embodiment, the judgment component 21 judges the type of the potential difference of the charge signal, that is, the potential difference of the charge signal is a positive voltage or a negative voltage, so as to judge whether the user is smoking. In this embodiment, for example, the positive electrode layer 11 and the negative electrode layer 12 are sequentially arranged in the air intake direction of the electronic cigarette, when the potential difference of the charge signal is a positive voltage, the determining element 21 determines that the user inhales the electronic cigarette, that is, the user starts smoking, and the determining module generates the smoking signal to control the heating element 30 to be turned on; when the potential difference of the charge signal is a negative voltage, the determining element 21 determines that the user blows air or influences of external air flow on the electronic cigarette, and the like, and the determining element 21 does not generate the smoking signal, so that the heating element 30 is prevented from being conducted to burn the electronic cigarette due to false triggering of the piezoelectric film 10.

Specifically, the determining element 21 is further configured to determine a magnitude of a potential difference of the charge signal, generate the smoking signal according to the magnitude of the potential difference of the charge signal, and send the smoking signal to the heating element 30.

The potential difference of the charge signal generated when the voltage film is deformed is proportional to the stress acting on the piezoelectric film 10. In order to avoid the piezoelectric film 10 being triggered by an external factor (for example, vibration, wind, etc.) by mistake, in this embodiment, when the potential difference of the charge signal received by the determining element 21 is large, that is, the vibration amplitude of the piezoelectric film 10 is large, it is determined that the user inhales the electronic cigarette, that is, the user starts smoking, and the determining module generates the smoking signal to control the heating element 30 to be turned on; when the potential difference of the charge signal received by the determining element 21 is small, that is, the vibration amplitude of the piezoelectric film 10 is small, the smoking signal is not generated, so that the piezoelectric film 10 is prevented from being triggered by mistake, and the heating element 30 is prevented from being turned on to burn the electronic cigarette.

It is understood that the determining element 21 can also generate the smoking signal according to the type of the charge signal and the magnitude of the potential difference. In this embodiment, taking the determining element 21 as an anode amplifier as an example, when the potential difference of the charge signal is a positive voltage and is greater than a preset voltage, the anode amplifier amplifies the charge signal to generate the smoking signal; when the potential difference of the charge signal is a negative voltage, the positive electrode amplifier does not amplify the charge signal, or the potential difference of the charge signal is smaller than a preset voltage, the positive electrode amplifier cannot amplify the charge signal to the potential difference of the smoking signal, so that the accuracy of the detection device of the electronic cigarette is further improved.

Specifically, the heating component 30 includes a heating element 31 and a diode 32, and the heating element 31 is used for heating the tobacco tar or the atomizer of the electronic cigarette; the diode 32 is used for receiving the smoking signal, and the heating element 31 is conducted under the condition that the smoking signal is received. In this embodiment, taking the determining element 21 as an anode amplifier as an example, the heating element 31 is connected to the power supply of the electronic cigarette through the diode 32, when the potential difference of the charge signal is a negative voltage, the anode amplifier does not amplify the charge signal, or when the potential difference of the charge signal is smaller than a preset voltage, the smoking signal amplified by the anode amplifier cannot be conducted to the diode 32, so that the heating element 31 cannot be conducted to the power supply of the electronic cigarette, and the heating element 31 cannot heat the cigarette oil or the atomizer, so as to avoid the piezoelectric film 10 being triggered by mistake, which leads to the heating element 30 being conducted to burn the electronic cigarette. In this embodiment, the diode 32 is used as the switching element of the heating element 31 to simplify the structure of the detection device of the electronic cigarette, thereby reducing the manufacturing cost.

In addition, the detecting device of the electronic cigarette according to the present invention includes, but is not limited to, the above-mentioned scheme, the heating component 30 may also be composed of a heating element 31 and a relay switch element, the determining element 21 is connected to a power supply of the electronic cigarette, and the determining element 21 generates the smoking signal and sends the smoking signal to the relay switch to turn on the heating element 31.

In addition, to solve the above problems, the present invention further provides a method for detecting an electronic cigarette, please refer to fig. 3, where fig. 3 is a schematic flow chart of a first embodiment of the method for detecting an electronic cigarette according to the present invention, and the method includes the following steps:

step S10: acquiring a charge signal generated by deformation of the piezoelectric film 10;

when a user inhales, the airflow strength is applied to the piezoelectric film 10, so that the piezoelectric film 10 is vibrated and deformed, the centers of positive and negative charges in the piezoelectric film 10 are relatively displaced and polarized, bound charges with opposite signs appear on the two end surfaces of the piezoelectric film, a change in potential difference occurs between the two end surfaces of the piezoelectric film 10, that is, the charge signal is generated, and the density of the charges is proportional to the stress acting on the piezoelectric film 10. The piezoelectric film 10 is an important carrier for energy conversion and signal transmission.

Step S20: generating a smoking signal according to the charge signal;

step S30: the heating component 30 is controlled by the smoking signal to heat the tobacco tar or the atomizer of the electronic cigarette.

The piezoelectric film 10 is electrically connected to the control module 20, when the charge signal is generated on the piezoelectric film 10, the piezoelectric film 10 transmits the potential difference of the charge signal to the control module 20, and when the charge signal is received by the control module 20, the smoke signal is generated and sent to the heating element 30, so that the heating element 30 is turned on to heat the tobacco tar or the atomizer, thereby realizing the function of smoking by the user.

According to the technical scheme, the piezoelectric effect of the piezoelectric film 10 is utilized, when the piezoelectric film 10 deforms, a charge signal is generated, and the control module 20 controls the conduction of the heating component 30 through the charge signal, so that the function of smoking by a user using the electronic cigarette is realized. Through piezoelectric film 10 is through deformation spontaneous electricity, need not to connect the power supply power again to save the cost of manufacture, improved the duration of an electronic cigarette simultaneously.

Further, referring to fig. 4, fig. 4 is a flowchart illustrating a second embodiment of the detection method based on the first embodiment, where the step S20 specifically includes:

step S21: judging the type of the charge signal;

step S22: generating the smoking signal according to the type of the charge signal.

The piezoelectric film 10 has different vibration directions and different generated potential differences, and when the piezoelectric film 10 protrudes towards the negative electrode layer 12, the potential difference of the charge signal is greater than zero; when the piezoelectric film 10 protrudes toward the positive electrode layer 11, the potential difference of the charge signal is smaller than zero. In this embodiment, since the electronic cigarette detection device is not powered from the outside, but is designed for only a positive power supply to reduce power consumption, that is, only amplifies a positive voltage, the piezoelectric film 10 needs to protrude toward the negative electrode layer 12 to make the potential difference of the charge signal greater than zero, so as to ensure that the electronic cigarette detection device operates normally.

Because the piezoelectric film 10 has different generated potential differences in different vibration directions, when a user inhales or exhales on the electronic cigarette, the piezoelectric film 10 vibrates and deforms along with the airflow flowing direction, so that the potential differences of the charge signals are different when the user inhales or exhales on the electronic cigarette. Therefore, in this embodiment, the judgment component 21 judges the type of the potential difference of the charge signal, that is, the potential difference of the charge signal is a positive voltage or a negative voltage, so as to judge whether the user is smoking. Therefore, the piezoelectric film 10 is prevented from being triggered by mistake, and the heating component 30 is conducted to burn the electronic cigarette.

Further, referring to fig. 5, fig. 5 is a flowchart illustrating a third embodiment of the detection method based on the second embodiment, where the step S22 specifically includes:

step S221: generating the smoking signal when the charge signal is of a positive charge type.

In this embodiment, taking the air inlet direction of the electronic cigarette to sequentially set the positive electrode layer 11 and the negative electrode layer 12 as an example, the positive electrode layer 11 and the negative electrode layer 12 are sequentially set along the air inlet direction of the electronic cigarette, so that when a user smokes, the stress generated along with the airflow drives the piezoelectric film 10 to protrude along the negative electrode layer 12 toward the air inlet direction of the electronic cigarette, and thus the piezoelectric film 10 is realized that the potential difference of the charge signal is greater than zero when the user smokes, that is, the charge signal is of a positive charge type. When the potential difference of the charge signal is a positive voltage, the determining element 21 determines that the user inhales the electronic cigarette, that is, the user starts smoking, and the determining module generates the smoking signal to control the heating element 30 to be turned on; when the potential difference of the charge signal is a negative voltage, it is determined that the user has an influence on the blowing of the electronic cigarette or the external airflow, and the like, and the determination module does not generate the smoking signal, so as to prevent the heating element 30 from being turned on and burning the electronic cigarette due to the false triggering of the piezoelectric film 10.

Further, referring to fig. 6, fig. 6 is a flowchart illustrating a fourth embodiment of the detection method based on the second embodiment, where the step S20 includes:

step S23: judging the magnitude of the potential difference of the charge signal;

step S24: and generating the smoking signal according to the magnitude of the potential difference of the charge signal.

The potential difference of the charge signal generated when the voltage film is deformed is proportional to the stress acting on the piezoelectric film 10. In order to avoid the piezoelectric film 10 being triggered by an external factor (for example, vibration, wind, etc.) by mistake, in this embodiment, when the potential difference of the charge signal received by the determining element 21 is large, that is, the vibration amplitude of the piezoelectric film 10 is large, it is determined that the user inhales the electronic cigarette, that is, the user starts smoking, and the determining module generates the smoking signal to control the heating element 30 to be turned on; when the potential difference of the charge signal received by the determining element 21 is small, that is, the vibration amplitude of the piezoelectric film 10 is small, the smoking signal is not generated, so that the piezoelectric film 10 is prevented from being triggered by mistake, and the heating element 30 is prevented from being turned on to burn the electronic cigarette.

It is understood that the determining element 21 can also generate the smoking signal according to the type of the charge signal and the magnitude of the potential difference. In this embodiment, taking the determining element 21 as an anode amplifier as an example, when the potential difference of the charge signal is a positive voltage and is greater than a preset voltage, the anode amplifier amplifies the charge signal to generate the smoking signal; when the potential difference of the charge signal is a negative voltage, the positive electrode amplifier does not amplify the charge signal, or the potential difference of the charge signal is smaller than a preset voltage, the positive electrode amplifier cannot amplify the charge signal to the potential difference of the smoking signal, so that the accuracy of the detection device of the electronic cigarette is further improved.

In addition, in order to solve the above problem, the present invention further provides an electronic cigarette, which includes a housing and the detection device of the electronic cigarette, where the detection device of the electronic cigarette is disposed on the housing.

As an example, the detection device of the electronic cigarette may be arranged at the air inlet position of the electronic cigarette. In practical application, the lung capacity of an adult male is about 3500 to 4000 milliliters; about 2500-3000 ml for an adult woman, so that the intensity of the airflow generated when the user inhales the electronic cigarette is enough to drive the piezoelectric film 10 to vibrate and deform. When a user inhales, the airflow strength is applied to the piezoelectric film 10, so that the piezoelectric film 10 is vibrated and deformed, the centers of positive and negative charges in the piezoelectric film 10 are relatively displaced and polarized, bound charges with opposite signs appear on the two end surfaces of the piezoelectric film, a change in potential difference occurs between the two end surfaces of the piezoelectric film 10, that is, the charge signal is generated, and the density of the charges is proportional to the stress acting on the piezoelectric film 10. The piezoelectric film 10 is an important carrier for energy conversion and signal transmission.

The piezoelectric film 10 is electrically connected to the control module 20, when the charge signal is generated on the piezoelectric film 10, the piezoelectric film 10 transmits the potential difference of the charge signal to the control module 20, and when the charge signal is received by the control module 20, the smoke signal is generated and sent to the heating element 30, so that the heating element 30 is turned on to heat the tobacco tar or the atomizer, thereby realizing the function of smoking by the user. In this embodiment, the control module 20 further needs to determine whether to generate the smoking signal according to the charge signal, for example, determine the magnitude, the positive polarity, and the negative polarity of the potential difference on the charge signal, so as to prevent the piezoelectric film 10 from being triggered by mistake, which causes the heating element 30 to be turned on and burn the electronic cigarette.

As another embodiment, the detection device of the electronic cigarette may be disposed on a housing of the electronic cigarette, and when a user needs to smoke, the user can press the piezoelectric film 10 by himself to vibrate and deform the piezoelectric film 10, so that a change in potential difference occurs between two end surfaces of the piezoelectric film 10, that is, the charge signal is generated. The piezoelectric film 10 is electrically connected to the control module 20, when the charge signal is generated on the piezoelectric film 10, the charge signal is transmitted to the control module 20, and when the charge signal is received by the control module 20, the smoke signal is generated and transmitted to the heating element 30, so that the heating element 30 is turned on to heat the tobacco tar or the atomizer, thereby realizing the function of smoking for the user. In this embodiment, the control module 20 further needs to determine whether to generate the smoking signal according to the charge signal, for example, determine the magnitude, the sign, and the like of the charge signal, so as to prevent the piezoelectric film 10 from being triggered by mistake, so that the heating element 30 is turned on and burns out the electronic cigarette.

In the above process, according to the technical scheme of the invention, by using the piezoelectric effect of the piezoelectric film 10, when the piezoelectric film 10 deforms, a charge signal is generated, and the control module 20 controls the conduction of the heating component 30 through the charge signal, so that the function of smoking the electronic cigarette by a user is realized. Through piezoelectric film 10 is through deformation spontaneous electricity, need not to connect the power supply power again to save the cost of manufacture, improved the duration of an electronic cigarette simultaneously.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.