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WO2015042848A1 - 吸烟信号产生方法、装置及电子烟 - Google Patents

吸烟信号产生方法、装置及电子烟 Download PDF

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Publication number
WO2015042848A1
WO2015042848A1 PCT/CN2013/084398 CN2013084398W WO2015042848A1 WO 2015042848 A1 WO2015042848 A1 WO 2015042848A1 CN 2013084398 W CN2013084398 W CN 2013084398W WO 2015042848 A1 WO2015042848 A1 WO 2015042848A1
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WO
WIPO (PCT)
Prior art keywords
electronic cigarette
microprocessor
sounding
smoking
signal
Prior art date
Application number
PCT/CN2013/084398
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English (en)
French (fr)
Inventor
向智勇
Original Assignee
吉瑞高新科技股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 吉瑞高新科技股份有限公司 filed Critical 吉瑞高新科技股份有限公司
Priority to PCT/CN2013/084398 priority Critical patent/WO2015042848A1/zh
Publication of WO2015042848A1 publication Critical patent/WO2015042848A1/zh

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    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
    • A24F40/50—Control or monitoring
    • A24F40/51—Arrangement of sensors
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
    • A24F40/10—Devices using liquid inhalable precursors

Definitions

  • the present invention relates to the field of electronic cigarettes, and more particularly to a method and apparatus for generating smoking signals for electronic cigarettes and electronic cigarettes.
  • E-cigarettes are products that heat atomizing the liquid to provide consumers with a substitute for cigarettes.
  • the current electronic cigarettes generate smoking signals mainly through two ways: one is to set a smoking sensor (microphone) in the electronic cigarette, the smoking sensor generates a smoking signal according to the airflow change during smoking; the second is to set a button in the electronic cigarette, when A smoking signal is generated when the button is pressed.
  • a smoking sensor microphone
  • the smoking sensor generates a smoking signal according to the airflow change during smoking
  • the second is to set a button in the electronic cigarette, when A smoking signal is generated when the button is pressed.
  • the film type capacitive air pressure sensor has a high requirement for the cleanliness of the film surface. If the smoke liquid in the electronic cigarette penetrates into the film of the sensor, the sensor will fail due to the lack of cleanliness, and the smoking signal cannot be normally generated. This will affect the user's use and shorten the life of the electronic cigarette.
  • the technical problem to be solved by the present invention is to provide a smoking signal generating method, apparatus and electronic cigarette for the above-mentioned drawbacks of the prior art.
  • a smoking signal generating device is applied to an electronic cigarette, the device comprising an audible cavity disposed in the electronic cigarette airflow passage and an acoustic-electric conversion unit disposed on the sounding cavity;
  • the sounding cavity is configured to generate ultrasonic waves of a specific frequency when an airflow flows;
  • the acoustic-electrical conversion unit is configured to convert the ultrasonic wave into a voltage signal to generate a smoking signal.
  • the sounding cavity includes a body, an inner hollow extending body formed along the body, a gas inlet provided on the body, and an audible air groove formed on a circumferential side wall of the extending body and A sound hole, the center line of the sounding groove and the center line of the sound hole coincide.
  • the acoustic-electric conversion unit comprises a piezoelectric ceramic sheet.
  • An electronic cigarette includes: a microprocessor, an utterance cavity located in the electronic cigarette airflow passage, and an acoustic-electric conversion unit disposed on the sounding cavity; the acoustic-electric conversion unit and the microprocessor are electrically connected ;
  • the sounding cavity is configured to emit ultrasonic waves of a specific frequency when an airflow flows;
  • the acoustic-electric conversion unit is configured to convert the ultrasonic wave into a voltage signal and transmit the signal to the microprocessor;
  • the microprocessor is configured to generate a control signal according to the voltage signal to initiate a process of heating and atomizing the liquid.
  • the sounding cavity includes a body, an inner hollow extending body formed along the body, a gas inlet provided on the body, and an audible air groove formed on a circumferential side wall of the extending body and A sound hole, the center line of the sounding groove and the center line of the sound hole coincide.
  • the electronic cigarette further includes a sleeve; the sleeve is provided with a through hole, the through hole is continuous with the air flow passage, and the airflow flows through the through hole and the air inlet to the extension body to generate the ultrasonic wave .
  • the acoustic-electric conversion unit comprises a piezoelectric ceramic sheet.
  • the microprocessor is configured to compare the voltage signal with a preset voltage threshold, and if the comparison result is that the voltage signal is greater than a preset voltage threshold, generating a control signal to Start the process of heating and atomizing the liquid.
  • the electronic cigarette further comprises: a power supply battery, a heating wire and a switch circuit; wherein the power supply battery is connected to the microprocessor; and the switch circuit is respectively connected to the power supply battery, the microprocessor and the heating wire;
  • the power supply battery is configured to store electrical energy and provide a supply voltage
  • the switch circuit is configured to be turned on according to a control signal of the microprocessor to enable the power supply battery to supply power to the heating wire Start the process of heating and atomizing the liquid.
  • a smoking signal generating method includes the following steps:
  • the sounding cavity vibrates to generate ultrasonic waves
  • An acoustic-electric conversion unit disposed on the sound-emitting cavity converts the ultrasonic wave into a voltage signal
  • the microprocessor generates a control signal based on the voltage signal to initiate a process of heating the atomization of the liquid.
  • the process for the microprocessor to generate a control signal according to the voltage signal to initiate the heating and atomization of the liquid smoke comprises:
  • the microprocessor compares the voltage signal with a set voltage threshold, and if the voltage signal is greater than the set voltage threshold, it is determined that a smoking signal is generated; if it is determined that a smoking signal is generated, the microprocessor outputs The control signal initiates the process of heating and atomizing the liquid.
  • the smoking signal generating method, device and electronic cigarette embodying the invention have the following beneficial effects: the sounding cavity and other components (such as a microprocessor, a power supply circuit, a battery, etc.) are independent, and the penetration of the liquid smoke does not cause smoking.
  • the signal generating device fails; and the smoking airflow (before atomization) when the user uses the electronic cigarette flows through the smoking signal generating device, which enhances the sensitivity, makes the smoking signal generation more accurate and sensitive, and prolongs the service life of the electronic cigarette.
  • FIG. 1 is a structural diagram of a smoking signal generating apparatus according to an embodiment of the present invention.
  • Figure 2 is a structural view of an electronic cigarette according to a first preferred embodiment of the present invention.
  • Figure 3 is a structural view of an electronic cigarette according to a second preferred embodiment of the present invention.
  • FIG. 4 is a schematic structural view of a sounding cavity according to an embodiment of the present invention.
  • Figure 5 is a schematic structural view of an electronic cigarette according to a second preferred embodiment of the present invention.
  • Figure 6 is a cross-sectional view of the electronic cigarette shown in Figure 5;
  • Figure 7 is a circuit diagram of an electronic cigarette according to an embodiment of the present invention.
  • Fig. 8 is a flow chart showing a method of generating a smoking signal according to an embodiment of the present invention.
  • FIG. 1 It is a structural diagram of a smoking signal generating device of an embodiment of the present invention.
  • the smoking signal generating device of the embodiment of the invention is applied to an electronic cigarette.
  • the device comprises an audible cavity 1 located in the electronic cigarette airflow passage and is arranged in the sounding cavity 1 On the sound and electricity conversion unit 2 .
  • the acoustic-electric conversion unit 2 may be disposed on an outer surface or an inner surface of the sounding cavity 1. Further, a hole for accommodating the electroacoustic conversion unit 2 may be formed in the sounding chamber 1.
  • the sounding chamber 1 includes an air inlet through which the airflow generated by the user smokes through the sounding chamber 1 .
  • the sounding cavity 1 When there is airflow through the sounding cavity 1, the sounding cavity 1 generates ultrasonic waves of a specific frequency (for example, 20000HZ or more); The conversion unit 2 converts the ultrasonic waves into voltage signals to generate a smoking signal.
  • a specific frequency for example, 20000HZ or more
  • Sounding cavity 1 of an embodiment of the invention 1 It can be of any shape, and it is only required to generate ultrasonic waves when the smoking airflow generated by the user smokes. It should be understood that in an embodiment of the invention, ultrasonic waves are generated as the airflow flows through the sounding cavity 1.
  • the smoking signal generating device of the embodiment of the present invention is composed of the sounding cavity 1 and the acoustic electricity conversion unit 2, which is higher than that in the prior art.
  • the film type capacitive air pressure sensor microphone
  • the film type capacitive air pressure sensor has higher sensitivity, and does not cause the smoking signal to be generated normally due to the contamination of the liquid smoke, thereby improving the user experience and prolonging the service life of the electronic cigarette.
  • the electronic cigarette is an integrated electronic cigarette, that is, the battery rod and the atomizer of the electronic cigarette are integrally formed.
  • the electronic cigarette of the first preferred embodiment of the present invention comprises: a sleeve 4, an acoustic chamber 1, an acoustic-electric conversion unit 2, and a microprocessor 3.
  • casing 4 includes a receiving space for accommodating the sounding chamber 1.
  • the acoustic-electric conversion unit 2 and the microprocessor 3 are both disposed in the sleeve 4.
  • the electro-acoustic conversion unit 2 is disposed on the sounding cavity 1 and the acoustic-electric conversion unit 2 It is also electrically connected to the microprocessor 3.
  • the electronic cigarette of the first preferred embodiment of the present invention includes an audible cavity 1 which is audible when there is airflow through the audible cavity 1 Generating an ultrasonic wave of a specific frequency; the acoustic-electrical conversion unit 2 converts the ultrasonic wave of the specific frequency into a voltage signal (ie, generates a smoking signal) and transmits it to the microprocessor 3; the microprocessor 3 The voltage signal is compared with a preset voltage threshold, and based on the comparison result, it is determined whether a smoking signal is generated.
  • the microprocessor 3 if the microprocessor 3 The received voltage signal is greater than the set voltage threshold, that is, the smoking signal is determined; if it is determined that the smoking signal is generated, the microprocessor 3 outputs a control signal to start the process of heating and atomizing the liquid.
  • the acoustic-electrical conversion unit 2 Includes piezoelectric ceramic sheets.
  • the airflow generated by the smoking action flows through the sounding chamber 1 , and the sound chamber 1
  • An ultrasonic wave of a specific frequency is generated; when the generated ultrasonic wave vibrates the piezoelectric ceramic piece, the piezoelectric ceramic piece generates a voltage signal, that is, the piezoelectric ceramic piece converts the ultrasonic wave into a voltage signal.
  • the sleeve of the electronic cigarette 4 should be correspondingly arranged, and the through hole is electrically connected to the air inlet of the sounding cavity 1, that is, the airflow flowing from the through hole can flow into the sounding cavity 1 through the air inlet to make the sounding cavity Vibration generates ultrasonic waves.
  • the size of the piezoelectric ceramic piece can be determined as the resonance frequency according to the sounding frequency of the sounding cavity 1.
  • the microprocessor 3 of the embodiment of the present invention may be a single chip microcomputer, an MCU or an ASIC chip or the like.
  • the electronic cigarette according to the first preferred embodiment of the present invention further includes a power supply battery 5, a heating wire 6 and a switch circuit disposed in the sleeve 4. 7 .
  • the power supply battery 5 is used to store electrical energy and supply voltage.
  • the switch circuit 7 is used to control the on or off of the power supply circuit of the power supply battery 5 to the heating wire according to the control signal of the microprocessor 3.
  • Electric heating wire 6 Used for heating to atomize smoke liquid.
  • the power supply battery 5 is connected to the microprocessor 3; the switch circuit 7 is connected to the power supply battery 5, the microprocessor 3, and the heating wire 7, respectively.
  • the microprocessor 3 outputs a control signal to cause the process of heating and atomizing the liquid to start.
  • the control switch circuit 7 is turned on, so that the power supply battery 5 is turned on to the power supply circuit of the heating wire 6. After the power supply circuit is turned on, the heating wire 6 is supplied with heat to generate heat, so that the liquid smoke is heated and atomized.
  • the electronic cigarette comprises a detachably connected battery rod 11 and an atomizer 12.
  • the atomizer 12 of the electronic cigarette according to the second preferred embodiment of the present invention includes: an atomizing sleeve 21 and a heating wire disposed in the atomizing sleeve 21 .
  • the battery rod 11 of the electronic cigarette comprises: a battery sleeve 41, an audible cavity 1 , and an acoustic-electric conversion unit 2 And microprocessor 3.
  • the battery cannula 41 includes a receiving space for accommodating the sounding cavity 1.
  • the acoustic-electric conversion unit 2 and the microprocessor 3 are both disposed in the battery cannula 41.
  • Acoustoelectric conversion unit 2 is disposed on the sounding cavity 1, and the acoustic-electrical conversion unit 2 is also electrically connected to the microprocessor 3.
  • the battery cannula 41 and the atomizing cannula 21 can be collectively referred to as a cannula.
  • the battery rod 11 further includes a power supply battery 5 disposed in the battery casing 41, a switch circuit 7 and a connection heating wire.
  • the power supply interface 8 of 7 wherein the power supply interface 8 is connected to the switch circuit 7 .
  • the two ends of the power supply interface 8 are also respectively connected to the heating wire of the atomizer 12. Connected at both ends.
  • An electronic cigarette battery rod includes an audible cavity 1 for audible cavity 1 when an airflow flows through the audible cavity 1 Generating an ultrasonic wave of a specific frequency; the acoustic-electrical conversion unit 2 converts the ultrasonic wave of the specific frequency into a voltage signal and transmits it to the microprocessor 3; the microprocessor 3 The voltage signal is compared with the set voltage threshold, and whether or not the smoking signal is generated is determined based on the comparison result.
  • the microprocessor 3 determines whether the smoking signal is generated. If it is determined that the smoking signal is generated, the microprocessor 3 outputs a control signal to start the process of heating and atomizing the liquid.
  • the output control signal causes the process of heating and atomizing the liquid to start, and the microprocessor 3 controls the switching circuit 7 to be turned on, so that the power supply battery 5 is turned on to the power supply circuit of the heating wire 6. After the power supply circuit is turned on, the heating wire 6 It is heated by electricity, so that the liquid is heated and atomized.
  • the sounding cavity 1 and the acoustic-electric conversion unit 2 may also be disposed on the atomizing sleeve 21
  • the acoustic-electrical conversion unit 2 is connected to the microprocessor 3, and the above-mentioned realization of the smoking signal can be realized.
  • the sound chamber 1 and the sound and electricity conversion unit 2 are disposed in the atomization sleeve In the case of 21, the functions of the respective parts are the same as those of the battery casing 41, and will not be described here.
  • the battery sleeve 41 or the atomizing sleeve of the electronic cigarette 21 should be correspondingly provided with a through hole, and the through hole is electrically connected with the air inlet of the sounding cavity 1, that is, the airflow flowing from the through hole can flow into the sounding cavity 1 through the air inlet to make the sounding cavity
  • the body vibrates to generate ultrasonic waves.
  • the sounding cavity 1 includes a body 404 along the body 404 An inner hollow extension 405 formed by the reduced diameter, an air inlet 401 disposed on the body 404, and an audible air groove 402 and a sound hole 403 formed on the circumferential side wall of the extension body 405 .
  • the center line of the sounding groove 402 coincides with the center line of the sounding hole 403 (i.e., the center line of the sounding groove 402 and the center line of the sounding hole 403 are the same horizontal line, and the horizontal line and the sounding cavity 1
  • the central axes are parallel).
  • FIG. 5 is a schematic structural view of an electronic cigarette according to a second preferred embodiment of the present invention.
  • the electronic cigarette includes a detachably connected battery rod (not shown) and an atomizer (not shown).
  • the atomizer includes a nozzle 200;
  • the battery rod includes a battery sleeve 41, and a lamp cap 300 , sound chamber 1 and acoustic conversion unit 2 .
  • Both the sounding chamber 1 and the acoustic-electrical conversion unit 2 are disposed in the battery cannula 41.
  • the sounding chamber 1 includes an air inlet 401, an audible air groove 402, and a sound hole 403 and ontology 404.
  • the body 404 is embedded in the battery cannula 41.
  • An inner hollow extension (not shown) is formed along the body diameter reduction. Sounding trough 402 and sound hole 403 It is opened on the 405 circumferential side wall of the extension body.
  • the center line of the audible air groove 402 coincides with the center line of the sound hole 403.
  • the audible air reservoir 402 includes a ramp 4021.
  • the sounding cavity 1 of the embodiment of the present invention It is disposed on the air flow passage of the electronic cigarette battery casing.
  • the air flow passage is formed by: providing a through hole in the battery sleeve when the user is from the suction nozzle 200 When the smoking action is started, the external airflow enters through the through hole, thereby forming an air flow passage.
  • the airflow over the airflow passage can enter the inner hollow extension from the through hole and the air inlet.
  • the bevel is made 4021 Vibration occurred.
  • the acoustic-electric conversion unit 2 is disposed on the outer side wall of the sounding cavity.
  • the acoustic-electric conversion unit 2 can also be disposed on the inner side wall of the sounding cavity.
  • the sounding cavity shown in Figure 6 can also be placed in the atomizing sleeve, just to meet the setting of the airflow channel.
  • the sounding cavity shown in Fig. 6 is equally applicable to the first preferred embodiment of the present invention and the smoking signal generating device.
  • the sounding cavity is suitable for the first preferred embodiment, as long as the sounding cavity is disposed on the airflow passage when the electronic cigarette is smoked, that is, the sounding cavity can be disposed on the airflow passage of the sleeve.
  • Acoustoelectric conversion unit 2 It is placed on the sounding cavity and connected to the microprocessor.
  • the switching circuit 7 includes a MOS transistor Q1.
  • the piezoceramic piece is connected to the second pin of the microprocessor 3.
  • MOS tube Q1 source connected to the power supply battery 5
  • the negative electrode and the gate are connected to the fourth pin of the microprocessor 3, and the drain is connected to one end of the heating wire 6; the other end of the heating wire 6 is connected to the positive electrode of the power supply battery 5.
  • the MOS transistor Q1 in the embodiment of the present invention can also be replaced with a triode, a transistor, a thyristor or the like to achieve the same function.
  • the circuit of the electronic cigarette according to the embodiment of the present invention further includes a light emitting diode D1 for displaying the working state of the electronic cigarette, and a Zener diode for voltage stabilization. D2 and resistor R8.
  • the first pin of the microprocessor 3 is connected to the cathode of the Zener diode D2; the anode of the Zener diode D2 is connected to the anode of the power supply battery 5; the light emitting diode D1
  • One end of the anode is connected to the resistor R7, the other end of the resistor R7 is connected to the anode of the power supply battery 5;
  • the cathode of the light-emitting diode D1 is connected to the fifth pin of the microprocessor 3; the microprocessor 3
  • the third pin is connected to one end of the resistor R8 and the drain of the MOS transistor Q1; the other end of the resistor R8 is connected to the anode of the power supply battery 5.
  • the microprocessor 3 outputs a control signal to start the process of heating and atomizing the liquid, which is the microprocessor 3.
  • the MOS transistor Q1 in the switching circuit 7 is turned on by controlling the fourth pin to be high.
  • the microprocessor 3 when the microprocessor 3 receives the voltage signal of the piezoelectric ceramic piece, the voltage signal and the preset The voltage threshold is compared. If the received voltage signal is greater than the set voltage threshold, the control MOS transistor Q1 is turned on to turn on the power supply circuit of the heating wire 6. After the power supply circuit is turned on, the heating wire 6 It is heated by electricity, so that the liquid is heated and atomized.
  • the microprocessor 3 controls the MOS transistor Q1 by controlling the fourth pin to output a stable duty cycle PWM pulse. The switching is performed to adjust the output voltage to adjust the driving mode of the heating wire 6.
  • the microprocessor 3 Short-circuit protection can be achieved by detecting the voltage change at the ninth pin. The specific implementation process is as follows: if a short circuit occurs, the voltage detected by the ninth pin will be abrupt (voltage rise), and the microprocessor 3 sets the fourth pin to a low level, so that The MOS transistor Q1 is turned off, thereby stopping the power supply and achieving short-circuit protection.
  • the LED D1 can indicate the working state, and realize the fade display of smoking and stoppage.
  • the microprocessor 3 By controlling the voltage of the fifth leg, the luminous intensity of the light emitting diode is different, thereby indicating that the electronic cigarette is in a normal working state or in an abnormal working state, and the abnormal working state includes: short circuit, battery low voltage, etc.; or, by controlling the fifth The output voltage of the foot is continuously increased or decreased to realize the light emitting diode
  • the continuous change in the brightness of D1 allows for fade-in and fade-out effects when smoking or stopping.
  • the microprocessor 3 When the level of the second pin is at a high level (or low voltage) for a certain period of time, it means that there is always a smoking signal during this time (that is, the voltage transmitted by the piezoelectric ceramic piece is always higher than the preset voltage threshold). ), that is, this period of time has been smoking, at this time, the microprocessor 3 controllable MOS tube Q1
  • the deadline is to avoid accidents such as sending a hot mouth for a long time in a smoking state to achieve long-suck protection.
  • this period of time can be set to control the length of time allowed for a single smoking.
  • the microprocessor 3 The voltage of the power supply process can also be detected by the voltage of the third pin, so that when the voltage is higher than the preset value, the fourth pin is controlled to turn off the MOS transistor Q1 to achieve overvoltage protection.
  • Figure 7 of the present invention The circuit shown is applicable to the electronic cigarette of the first preferred embodiment and also to the electronic cigarette of the second preferred embodiment.
  • FIG. 8 is a flow chart of a smoking signal generating method according to an embodiment of the present invention. The method includes the following steps:
  • Step S101 When the airflow passes through the sounding cavity 1, the sounding cavity 1 vibrates to generate ultrasonic waves.
  • Step S102 The acoustic-electrical conversion unit 2 disposed on the sounding cavity 1 converts the ultrasonic wave into a voltage signal.
  • Step S103 The microprocessor 3 generates a control signal according to the voltage signal to start the process of heating and atomizing the liquid.
  • the microprocessor 3 Comparing the voltage signal with the set voltage threshold, if the received voltage signal is greater than the set voltage threshold, it is determined that a smoking signal is generated; if it is determined that a smoking signal is generated, the microprocessor 3 The output control signal initiates the process of heating and atomizing the liquid.
  • the smoking signal generating device, method and electronic cigarette according to the embodiments of the present invention have the following advantages: the sounding cavity and other components (such as a microprocessor, a power supply circuit, a battery, etc.) are independent, and the penetration of the liquid smoke does not cause a smoking signal.
  • the generating device fails; and the smoking airflow (before atomization) when the user uses the electronic cigarette flows through the smoking signal generating device, which enhances the sensitivity and makes the smoking signal generation more accurate and sensitive.

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Abstract

本发明公开了一种吸烟信号产生方法、装置及电子烟，所述方法包括以下步骤：当气流经过发声腔体时，发声腔体振动产生超声波；设置在发声腔体上的声电转换单元将所述超声波转换为电压信号；微处理器根据所述电压信号产生控制信号以启动烟液加热雾化的过程。实施本发明的有益效果是，发声腔体和其他的部件是独立的，烟液的渗入不会使吸烟信号产生装置失效；且使用者使用电子烟时的吸烟气流流过吸烟信号产生装置，增强了灵敏度，使吸烟信号的产生更加准确和灵敏；还可延长电子烟的使用寿命。

Description

吸烟信号产生方法、装置及电子烟 技术领域
本发明涉及电子烟领域，更具体地说，涉及一种电子烟的 吸烟信号产生方法、装置及电子烟 。
背景技术
电子烟是一种对烟液加热产生雾化，以给消费者提供一种香烟的替代品的产品。
在使用电子烟的过程中，产生吸烟信号（即使用者吸烟）后，烟液加热雾化的过程即开始启动。因此，产生吸烟信号是电子烟的重要步骤。
目前的电子烟产生吸烟信号主要通过两种途径：一是在电子烟中设置吸烟传感器（咪头），由吸烟传感器根据吸烟时的气流变化产生吸烟信号；二是在电子烟中设置按键，当按键被按压时即产生吸烟信号。
目前设置在电子烟中的吸烟传感器，大多数都是薄膜型的电容气压传感器。当使用者吸烟时，传感器电容的两个薄膜两端产生气压差，薄膜就会弯曲变形，这样就改变了电容量，由此产生吸烟信号。
但是，薄膜型的电容气压传感器对薄膜表面的清洁度有很高的要求。如果电子烟中的烟液渗透到该传感器的薄膜上，则该传感器将会由于清洁度达不到要求而失效，从而不能正常产生吸烟信号。这将影响使用者的使用，缩短电子烟的使用寿命。
发明内容
本发明要解决的技术问题在于，针对现有技术的上述缺陷，提供一种 吸烟信号产生方法、装置及电子烟 。
本发明解决其技术问题所采用的技术方案是：构造 一种吸烟信号产生装置，应用于电子烟，所述装置包括位于电子烟气流通道内的发声腔体和设置于所述发声腔体上的声电转换单元；
所述发声腔体，用于当有气流流过时，产生特定频率的超声波；
所述声电转换单元，用于将所述超声波转换为电压信号以产生吸烟信号。
优选的， 所述发声腔体包括本体、沿所述本体缩径形成的内中空的延伸体、设置在所述本体上的进气口、以及开设在所述延伸体周向侧壁上的发声气槽和发声孔，所述发声气槽的中心线和发声孔的中心线重合。
优选的， 所述声电转换单元包括压电陶瓷片。
一种电子烟，包括：微处理器、位于电子烟气流通道内的发声腔体和设置于所述发声腔体上的声电转换单元；所述声电转换单元和所述微处理器电连接；
所述发声腔体，用于当有气流流过时，发出特定频率的超声波；
所述声电转换单元，用于将所述超声波转换为电压信号并传送到所述微处理器；
所述微处理器，用于根据所述电压信号产生控制信号以 启动烟液加热雾化的过程 。
优选的， 所述发声腔体包括本体、沿所述本体缩径形成的内中空的延伸体、设置在所述本体上的进气口、以及开设在所述延伸体周向侧壁上的发声气槽和发声孔，所述发声气槽的中心线和发声孔的中心线重合。
优选的， 所述电子烟还包括套管；所述套管上设置有通孔，所述通孔与所述气流通道贯通，气流经由所述通孔和进气口流至所述延伸体内产生所述超声波。
优选的， 所述声电转换单元包括压电陶瓷片。
优选的，所述微处理器用于将所述电压信号和预设的电压阈值进行比较，若比较结果为所述电压信号大于预设的电压阈值，则 产生控制信号以 启动烟液加热雾化的过程。
优选的，所述电子烟还包括：供电电池、电热丝和开关电路；其中，所述供电电池和微处理器连接；开关电路分别和供电电池、微处理器和电热丝连接；
所述供电电池用于存储电能以及提供供电电压；
所述开关电路用于根据所述微处理器的控制信号导通，以使所述供电电池对所述电热丝 供电而 启动烟液加热雾化的过程。
一种吸烟信号产生方法，包括以下步骤：
当气流经过发声腔体时，发声腔体振动产生超声波；
设置在发声腔体上的声电转换单元将所述超声波转换为电压信号；
微处理器 根据所述电压信号产生控制信号以 启动烟液加热雾化的过程。
优选的，所述微处理器 根据所述电压信号产生控制信号以 启动烟液加热雾化的过程具体包括：
微处理器将所述电压信号和设定的电压阈值进行比较，若所述电压信号大于设定的电压阈值，即判断为产生了吸烟信号；若判断为产生了吸烟信号，则微处理器输出控制信号启动烟液加热雾化的过程。
实施本发明的吸烟信号产生方法、装置及电子烟，具有以下有益效果：发声腔体和其他的部件（例如微处理器、供电电路、电池等）是独立的，烟液的渗入不会使吸烟信号产生装置失效；且使用者使用电子烟时的吸烟气流（雾化之前）流过吸烟信号产生装置，增强了灵敏度，使吸烟信号的产生更加准确和灵敏；还可延长电子烟的使用寿命。
附图说明
下面将结合附图及实施例对本发明作进一步说明，附图中：
图 1 是本发明实施例的吸烟信号产生装置的结构图；
图 2 是本发明第一优选实施例的电子烟的结构图；
图 3 是本发明第二优选实施例的电子烟的结构图；
图 4 是本发明实施例的发声腔体的结构示意图；
图 5 是本发明第二优选实施例的电子烟的结构示意图；
图 6 是图 5 所示的电子烟的剖视图；
图 7 是本发明实施例的电子烟的电路图；
图 8 是本发明实施例的吸烟信号产生方法的流程图。
具体实施方式
为了对本发明的技术特征、目的和效果有更加清楚的理解，现对照附图详细说明本发明的具体实施方式。
参见图 1 为本发明实施例的吸烟信号产生装置的结构图。本发明实施例的吸烟信号产生装置应用于电子烟。该装置包括位于电子烟气流通道内的发声腔体 1 和设置于发声腔体 1 上的声电转换单元 2 。具体的，声电转换单元 2 可设置于发声腔体 1 的外表面或内表面。此外，也可在发声腔体 1 开设一容纳声电转换单元 2 的孔。
发声腔体 1 包括一进气口，当使用者吸烟时产生的气流通过该进气口流经 发声腔体 1 。
当有气流流过发声腔体 1 时，发声腔体 1 产生特定频率（例如， 20000HZ 或以上）的超声波；声电 转换单元 2 将超声波转换为电压信号以产生吸烟信号。
本发明实施例的发声腔体 1 可为任意形状，只需满足当使用者进行吸烟产生的吸烟气流流过时，能产生超声波即可。应理解，在本发明的实施例中，当气流流过发声腔体 1 时产生超声波。
本发明实施例的吸烟信号产生装置由发声腔体 1 和声电转换单元 2 构成，比现有技术中 薄膜型的电容气压传感器（咪头）有更高的灵敏度，且不会因为烟液的污染而导致不能正常产生吸烟信号，提升使用者的使用体验，可延长电子烟的使用寿命。
参见图 2 为本发明第一优选实施例的电子烟的结构图。在本发明的第一优选实施例中，电子烟为一体式电子烟，即电子烟的电池杆和雾化器为一体成型的。
本发明第一优选实施例的电子烟包括： 套管 4 、发声腔体 1 、声电转换单元 2 和微处理器 3 。套管 4 包括一用于容纳发声腔体 1 的容纳空间。声电转换单元 2 和微处理器 3 均设置于套管 4 内。声电转换单元 2 设置于发声腔体 1 上，且声电转换单元 2 还与微处理器 3 电连接。
本发明的第一优选实施例的电子烟包括发声腔体 1 ，当有气流流过发声腔体 1 时，发声腔体 1 产生特定频率的超声波；声电转换单元 2 把该特定频率的超声波转换成电压信号（即产生吸烟信号）并传输到微处理器 3 ；微处理器 3 把电压信号和预设的电压阈值进行比较，并根据比较结果判断是否产生了吸烟信号。具体的，若微处理器 3 接收到的电压信号大于设定的电压阈值，即判断为产生吸烟信号；若判断为产生了吸烟信号，则微处理器 3 就输出控制信号使烟液加热雾化的过程开始启动。
在本发明的第一优选实施例中，声电转换单元 2 包括压电陶瓷片。当电子烟使用者吸烟时，吸烟动作产生的气流流过发声腔体 1 ，发声腔体 1 产生特定频率的超声波；当产生的超声波使得压电陶瓷片振动时，压电陶瓷片就会产生一个电压信号即压电陶瓷片将超声波转换为电压信号。
应理解，为了使使用者吸烟时产生的气流能够流进发声腔体 1 的进气口，电子烟的套管 4 上应相应设置有通孔，并使得通孔与发声腔体 1 的进气口相导通，即从通孔流进的气流能够通过进气口流进到发声腔体 1 以使发声腔体振动而产生超声波。
压电陶瓷片的尺寸可根据发声腔体 1 的发声频率作为共振频率来确定。
本发明实施例的微处理器 3 可为单片机、 MCU 或 ASIC 芯片等。
参见图 2 ，本发明第一优选实施例的电子烟还包括设置于套管 4 内的供电电池 5 、电热丝 6 和开关电路 7 。供电电池 5 用于存储电能以及提供供电电压。开关电路 7 用于根据微处理器 3 的控制信号，控制供电电池 5 对电热丝的供电电路的导通或截止。电热丝 6 用于发热以雾化烟液。其中，供电电池 5 和微处理器 3 连接；开关电路 7 分别和供电电池 5 、微处理器 3 和电热丝 7 连接。
在本发明第一优选实施例中，微处理器 3 输出控制信号使烟液加热雾化的过程开始启动是微处理器 3 控制开关电路 7 导通，从而使供电电池 5 对电热丝 6 的供电电路导通。该供电电路导通后，电热丝 6 被供电而发热，从而使烟液加热雾化。
参见图 3 为 本发明第二优选实施例的电子烟的结构图。在本发明的第二优选实施例中，电子烟包括可拆卸连接的电池杆 11 和雾化器 12 。
本发明的第二优选实施例的电子烟的雾化器 12 包括：雾化套管 21 和设置于雾化套管 21 内的电热丝 7 。
本发明第二优选实施例的电子烟的电池杆 11 包括：电池 套管 41 、发声腔体 1 、声电转换单元 2 和微处理器 3 。 电池 套管 41 包括一用于容纳发声腔体 1 的容纳空间。声电转换单元 2 和微处理器 3 均设置于 电池 套管 41 内。声电转换单元 2 设置于发声腔体 1 上，且声电转换单元 2 还与微处理器 3 电连接。
应理解， 电池 套管 41 和雾化套管 21 可统称为套管。
此外，电池杆 11 还包括 设置于 电池 套管 41 内的供电电池 5 、开关电路 7 和用于连接电热丝 7 的供电接口 8 ，其中，供电接口 8 与开关电路 7 连接。当雾化器 12 和电池杆 11 连接时，供电接口 8 的两端还分别与雾化器 12 的电热丝 7 的两端连接 。
本发明的第二优选实施例的电子烟电池杆包括发声腔体 1 ，当有气流流过发声腔体 1 时，发声腔体 1 产生特定频率的超声波；声电转换单元 2 把该特定频率的超声波转换成电压信号并传输到微处理器 3 ；微处理器 3 把电压信号和设定的电压阈值进行比较，并根据比较结果判断是否产生吸烟信号。具体的，若微处理器 3 接收到的电压信号大于设定的电压阈值，即判断为产生吸烟信号；若判断为产生吸烟信号，则微处理器 3 就输出控制信号使烟液加热雾化的过程开始启动。微处理器 3 输出控制信号使烟液加热雾化的过程开始启动是微处理器 3 控制开关电路 7 导通，从而使供电电池 5 对电热丝 6 的供电电路导通。该供电电路导通后，电热丝 6 被供电而发热，从而使烟液加热雾化。
应理解，在本发明的实施例中，发声腔体 1 和声电转换单元 2 还可设置于雾化套管 21 内，只需实现当雾化器和电池杆连接时，声电转换单元 2 与微处理器 3 连接，即可实现上述实现吸烟信号的产生。当发声腔体 1 和声电转换单元 2 设置于雾化套管 21 内时，各部分的功能和上述设置于电池套管 41 是一样的，在此不再描述。
应理解，为了使使用者吸烟时产生的气流能够流进发声腔体 1 的进气口，电子烟的电池套管 41 或雾化套管 21 上应相应设置有通孔，并使得通孔与发声腔体 1 的进气口相导通，即从通孔流进的气流能够通过进气口流进到发声腔体 1 以使发声腔体振动而产生超声波。
参见图 4 为本发明实施例的发声腔体的结构示意图。发声腔体 1 包括本体 404 、沿本体 404 缩径形成的内中空的延伸体 405 、设置在本体 404 上的进气口 401 、以及开设在延伸体 405 周向侧壁上的发声气槽 402 和发声孔 403 。发声气槽 402 的中心线和发声孔 403 的中心线重合（即发声气槽 402 的中心线和发声孔 403 的中心线为同一水平线，且该水平线与发声腔体 1 的中心轴线是平行的）。当气流从进气口 401 流入内中空的延伸体 405 时，振动以产生超声波。具体如何产生超声波是本领域技术人员惯用技术（例如，犬笛、旋笛等的超声产生原理），只要是可以产生超声波的腔体结构即可，所以此处不做详细描述。
参见图 5 为本发明第二优选实施例的电子烟的结构示意图。参见图 5 ，在该实施例中，电子烟包括可拆卸连接的电池杆（图中未标识出）和雾化器（图中未标识出）。雾化器包括吸嘴 200 ；电池杆包括电池套管 41 、灯帽 300 、发声腔体 1 和声电转换单元 2 。发声腔体 1 和声电转换单元 2 均设置于电池套管 41 内。
参见图 6 为图 5 所示的电子烟的剖视图。发声腔体 1 包括进气口 401 、发声气槽 402 、发声孔 403 和本体 404 。本体 404 内嵌于电池套管 41 内。沿本体缩径形成内中空的延伸体（图中未标识出）。发发声气槽 402 和发声孔 403 开设在延伸体 405 周向侧壁上。发声气槽 402 的中心线和发声孔 403 的中心线重合。发声气槽 402 包括一斜面 4021 。斜面 4021 向发声腔体 1 的中心轴线倾斜，即：斜面 4021 的第一端 4022 至第二端 4023 向发声腔体 1 的中心轴线逐渐倾斜，第一端 4022 为远离本体 404 的一端，第二端 4023 为靠近本体 404 的一端。应理解，本发明实施例的发声腔体 1 设置于电子烟电池套管的气流通道上。气流通道的形成为：在电池套管上设置有通孔，当使用者从吸嘴 200 处开始吸烟动作时，外部气流从通孔进入，由此形成气流通道。当使用者吸烟时，气流通道上的气流能够从通孔和进气口进入到内中空的延伸体。当气流进入至延伸体时，使得斜面 4021 发生振动。参见图 5 ，声电转换单元 2 设置于发声腔体的外侧壁上。此外，声电转换单元 2 还可设置于发声腔体的内侧壁上。
此外，图 6 所示的发声腔体也可设置在雾化套管内，只需满足其设置是在气流通道上即可。
应理解，图 6 所示的发声腔体同样适用于本发明的第一优选实施例及吸烟信号产生装置。当将图 6 所示的发声腔体适用于第一优选实施例时，只要满足将发声腔体设置于电子烟吸烟时的气流通道上即可，即发声腔体可设置于套管的气流通道上。声电转换单元 2 设置于发声腔体上，且和微处理器连接即可。
参见图 7 为本发明实施例的电子烟的电路图。微处理器 3 的型号为 SN8P2711 。声电转换单元 2 包括 压电陶瓷片。开关电路 7 包括 MOS 管 Q1 。压电陶瓷片连接到微处理器 3 的第二引脚。 MOS 管 Q1 的源极连接供电电池 5 的负极、栅极连接到微处理器 3 的第四引脚、漏极连接电热丝 6 的一端；电热丝 6 的另一端连接供电电池 5 的正极。
本发明实施例中的 MOS 管 Q1 还可用三极管、晶体管、晶闸管等替代以实现相同的功能。
此外，本发明实施例的电子烟的电路中还包括用于显示电子烟工作状态的发光二极管 D1 、用于稳压的稳压二极管 D2 和电阻 R8 。其中，微处理器 3 的第一引脚连接稳压二极管 D2 的阴极；稳压二极管 D2 的阳极连接供电电池 5 的正极；发光二极管 D1 的阳极连接电阻 R7 的一端，电阻 R7 的另一端连接供电电池 5 的正极；发光二极管 D1 的阴极连接微处理器 3 的第五引脚；微处理器 3 的第三引脚连接电阻 R8 的一端以及 MOS 管 Q1 的漏极；电阻 R8 的另一端连接供电电池 5 的正极。
参见图 7 ，微处理器 3 输出控制信号使烟液加热雾化的过程开始启动，是微处理器 3 通过控制第四引脚为高电平，从而使开关电路 7 中的 MOS 管 Q1 导通。
具体的，在工作过程中，当微处理器 3 接收到压电陶瓷片的电压信号后，将该电压信号和预设的 电压阈值进行比较，若接收到的电压信号大于设定的电压阈值，则控制 MOS 管 Q1 导通，以使对电热丝 6 的供电电路导通 。该供电电路导通后，电热丝 6 被供电而发热，从而使烟液加热雾化。
在供电过程中，微处理器 3 通过控制第四引脚输出稳定的占空比的 PWM 脉冲，控制 MOS 管 Q1 的通断，从而实现调节输出电压以对电热丝 6 的驱动方式进行调节。且在供电过程中，微处理器 3 可通过检测第九引脚的电压变化实现短路的保护。其具体实现过程为：若发生短路则第九脚检测到的电压会发生突变（电压升高），则微处理器 3 置第四引脚为低电平，使得 MOS 管 Q1 截止，从而使供电停止，实现短路保护。在供电过程中，发光二极管 D1 可指示工作状态，以及实现吸烟、停吸的淡入淡出显示。其具体实现为，微处理器 3 可通过控制第五脚的电压使得发光二极管的发光强度不同，从而指示电子烟处于正常工作状态或处于某异常的工作状态，异常的工作状态包括：短路、电池低压等；或者，通过控制第五脚的输出电压连续增大或减小，从而实现发光二极管 D1 的亮度的连续变化，实现吸烟或停吸时出现淡入和淡出的显示效果。
此外，在供电过程中，若微处理器 3 第二引脚的电平某一时间段内均处于高电平（或低电压）时，说明这段时间内一直存在吸烟信号（即压电陶瓷片传送的电压一直高于预设的电压阈值），即这段时间一直处于吸烟状态，此时，微处理器 3 可控制 MOS 管 Q1 的截止，避免长时间处于吸烟状态发送烫嘴等事故，以实现长吸保护功能。在本实用新型的实施例中，这一时间段可进行设置，即可对允许的一次吸烟的时长进行控制。
在供电过程中，微处理器 3 还可通过第三引脚的电压实现对供电过程的电压的检测，从而可实现到电压高于预设值时，控制第四引脚从而使 MOS 管 Q1 截止，以实现过压保护。
应理解，本发明图 7 所示的电路即适用于第一优选实施例所述的电子烟，也适用于第二优选实施例所述的电子烟。
参见图 8 是本发明实施例的吸烟信号产生方法的流程图。该方法包括以下步骤：
步骤 S101 、当气流经过发声腔体 1 时，发声腔体 1 振动产生超声波。
步骤 S102 、设置在发声腔体 1 上的声电转换单元 2 将超声波转换为电压信号。
步骤 S103 、微处理器 3 根据所述电压信号产生控制信号以 启动烟液加热雾化的过程。
具体的，微处理器 3 将电压信号和设定的电压阈值进行比较，若接收到的电压信号大于设定的电压阈值，即判断为产生了吸烟信号；若判断为产生了吸烟信号，则微处理器 3 输出控制信号启动烟液加热雾化的过程。
本发明实施例的吸烟信号产生装置、方法及电子烟具有以下优点：发声腔体和其他的部件（例如微处理器、供电电路、电池等）是独立的，烟液的渗入不会使吸烟信号产生装置失效；且使用者使用电子烟时的吸烟气流（雾化之前）流过吸烟信号产生装置，增强了灵敏度，使吸烟信号的产生更加准确和灵敏。
上面结合附图对本发明的实施例进行了描述，但是本发明并不局限于上述的具体实施方式，上述的具体实施方式仅仅是示意性的，而不是限制性的，本领域的普通技术人员在本发明的启示下，在不脱离本发明宗旨和权利要求所保护的范围情况下，还可做出很多形式，这些均属于本发明的保护之内。

Claims (11)

  1. 一种吸烟信号产生装置，应用于电子烟，其特征在于，所述装置包括位于电子烟气流通道内的发声腔体和设置于所述发声腔体上的声电转换单元；
    所述发声腔体，用于当有气流流过时，产生特定频率的超声波；
    所述声电转换单元，用于将所述超声波转换为电压信号以产生吸烟信号。
  2. 根据权利要求 1 所述的吸烟信号产生装置，其特征在于，所述发声腔体包括本体、沿所述本体缩径形成的内中空的延伸体、设置在所述本体上的进气口、以及开设在所述延伸体周向侧壁上的发声气槽和发声孔，所述发声气槽的中心线和发声孔的中心线重合。
  3. 根据权利要求 1 所述的吸烟信号产生装置，其特征在于，所述声电转换单元包括压电陶瓷片。
  4. 一种电子烟，其特征在于，包括：微处理器、位于电子烟气流通道内的发声腔体和设置于所述发声腔体上的声电转换单元；所述声电转换单元和所述微处理器电连接；
    所述发声腔体，用于当有气流流过时，发出特定频率的超声波；
    所述声电转换单元，用于将所述超声波转换为电压信号并传送到所述微处理器；
    所述微处理器，用于根据所述电压信号产生控制信号以
    启动烟液加热雾化的过程 。
  5. 根据权利要求4 所述的电子烟，其特征在于，所述发声腔体包括本体、沿所述本体缩径形成的内中空的延伸体、设置在所述本体上的进气口、以及开设在所述延伸体周向侧壁上的发声气槽和发声孔，所述发声气槽的中心线和发声孔的中心线重合。
  6. 根据权利要求 5 所述的电子烟，其特征在于，所述电子烟还包括套管；所述套管上设置有通孔，所述通孔与所述气流通道贯通，气流经由所述通孔和进气口流至所述延伸体内产生所述超声波。
  7. 根据权利要求 4 所述的电子烟，其特征在于，所述声电转换单元包括压电陶瓷片。
  8. 根据权利要求 4 所述的电子烟，其特征在于， 所述微处理器用于将所述电压信号和预设的电压阈值进行比较，若比较结果为所述电压信号大于预设的电压阈值，则 产生控制信号以启动烟液加热雾化的过程。
  9. 根据权利要求 4 所述的电子烟，其特征在于，所述电子烟还包括：供电电池、电热丝和开关电路；其中，所述供电电池和微处理器连接；开关电路分别和供电电池、微处理器和电热丝连接；
    所述供电电池用于存储电能以及提供供电电压；
    所述开关电路用于根据所述微处理器的控制信号导通，以使所述供电电池对所述电热丝 供电而 启动烟液加热雾化的过程。
  10. 一种吸烟信号产生方法，其特征在于，包括以下步骤：
    当气流经过发声腔体时，发声腔体振动产生超声波；
    设置在发声腔体上的声电转换单元将所述超声波转换为电压信号；
    微处理器 根据所述电压信号产生控制信号以 启动烟液加热雾化的过程。
  11. 根据权利要求 10 所述的吸烟信号产生方法，其特征在于，所述微处理器 根据所述电压信号产生控制信号以 启动烟液加热雾化的过程具体包括：
    微处理器将所述电压信号和设定的电压阈值进行比较，若所述电压信号大于设定的电压阈值，即判断为产生了吸烟信号；若判断为产生了吸烟信号，则微处理器输出控制信号启动烟液加热雾化的过程。
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