WO2017185356A1 - 一种检测电子烟中烟油是否耗尽的方法 - Google Patents

一种检测电子烟中烟油是否耗尽的方法 Download PDF

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Publication number
WO2017185356A1
WO2017185356A1 PCT/CN2016/080776 CN2016080776W WO2017185356A1 WO 2017185356 A1 WO2017185356 A1 WO 2017185356A1 CN 2016080776 W CN2016080776 W CN 2016080776W WO 2017185356 A1 WO2017185356 A1 WO 2017185356A1
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WO
WIPO (PCT)
Prior art keywords
heating wire
electronic cigarette
smoke oil
voltage
smoke
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Application number
PCT/CN2016/080776
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English (en)
French (fr)
Inventor
刘秋明
向智勇
牛建华
韦志林
Original Assignee
惠州市吉瑞科技有限公司深圳分公司
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Application filed by 惠州市吉瑞科技有限公司深圳分公司 filed Critical 惠州市吉瑞科技有限公司深圳分公司
Priority to PCT/CN2016/080776 priority Critical patent/WO2017185356A1/zh
Publication of WO2017185356A1 publication Critical patent/WO2017185356A1/zh

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Classifications

    • 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
    • A24F40/53—Monitoring, e.g. fault detection
    • 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
    • A24F40/60—Devices with integrated user interfaces
    • 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 cigarette technology, and in particular, to a method for detecting whether smoke oil in an electronic cigarette is exhausted.
  • Electronic cigarette is a relatively common artificial electronic cigarette product, mainly used for smoking cessation and replacement of cigarettes; the structure of electronic cigarette mainly includes battery components and atomizing components; when the smoker's smoking action is detected, the battery component is The atomizing component supplies power to make the atomizing component in the squirming state; when the atomizing component is turned on, the heating wire is heated, and the smoke oil is evaporated by heat to form an aerosol which simulates the smoke, so that the user has a kind of sucking Similar to the feeling of smoking.
  • the existing electronic cigarette has sufficient smoke oil in the early stage of smoking, so the smoke taste is pure, but the electronic cigarette uses an opaque oil storage chamber, and the user cannot see the remaining amount of the oil in the oil storage chamber, and the electron Smoke does not have the warning and warning function of the amount of smoke oil, which leads to the situation that after the smoking, the smoke oil becomes less or exhausted, and the smoking continues to cause the odor of burning cotton, which brings a very bad experience to the user.
  • the present invention is directed to the prior art, the electronic cigarette can not let the user know whether the smoke oil is about to be exhausted, and the smoking oil is about to run out, continue to smoke, resulting in technical problems of burning cotton, providing a detection electron
  • the method for exhausting the smoke oil in the cigarette and an electronic cigarette realize that after the smoke oil is about to be exhausted, the battery component stops supplying power to the heating wire, and therefore refuses to respond to the user's smoking action, stops the atomization work, Avoid the phenomenon of burning cotton, thus improving the user experience
  • the present invention provides a method for detecting whether smoke oil in an electronic cigarette is exhausted, the electronic cigarette includes an atomizing component for storing and atomizing the smoke oil, and a battery for supplying power to the atomizing component Component, method includes Next steps:
  • the starting device, the battery assembly supplies power to the heating wire for atomizing the smoke oil in the atomizing assembly at a first preset voltage, so that the heating wire operates at the first preset power,
  • the first preset power is lower than a normal atomizing power of the electronic cigarette;
  • the battery assembly and the atomization assembly are detachably connected, and the smoke detection trigger signal in the step so A trigger signal generated when the battery pack is connected to the atomizing component.
  • the smoke oil detection trigger signal in the step S1 is used to trigger the normal atomization smoke of the atomization component in the electronic cigarette. Oil smoking signal.
  • the step S3 further includes: when the inter-turn interval is not greater than a preset value, the battery component is in a second pre- And a voltage is applied to the heating wire, and the second preset voltage is greater than the first preset voltage.
  • the electronic cigarette further includes a soot detecting switch, and the smoke detecting trigger signal in the step SO is the soot detecting.
  • the signal of the action is the soot detecting.
  • the battery assembly and the atomization assembly are detachably connected, and the electronic cigarette further includes a smoke detection device.
  • the smoke detecting trigger signal in the step S is any one of the following: a trigger signal generated by connecting the battery assembly and the atomizing component, a smoking signal, and an action signal of the soot detecting.
  • the atomization assembly is provided with a smoke oil adsorbing member for adsorbing the smoke oil, and the heating wire is attached to the smoke oil adsorbing member. And atomizing the smoke oil in the smoke oil adsorbing member, wherein the first preset temperature is lower than a melting point/flaming point temperature of the smoke oil adsorbing member.
  • the first preset temperature and the The difference between the melting point/flaming point temperature of the smoke oil adsorbing member is between 10 ° C and 50 ° C.
  • the material of the smoke oil adsorbing member is cotton, and the difference between the first preset temperature and the burning point of the cotton is 10°. Above C.
  • the first preset temperature is greater than
  • the detecting the heating wire temperature in the step S2 includes: detecting the temperature of the heating wire by using a temperature sensor .
  • the temperature sensor is a thermocouple temperature sensor, and the thermocouple temperature sensor is connected to an end of the heating wire.
  • the temperature of detecting the heating wire in the step S2 includes: calculating the voltage in the circuit loop where the heating wire is located Obtaining a resistance value of the heating wire based on the voltage value, obtaining a temperature of the heating wire based on a resistance relationship between the resistance of the heating wire and a pre-stored heating wire, wherein the heating wire is The resistance changes with temperature.
  • the voltage detection point is an end of the heating wire.
  • a voltage dividing module is connected in series in the power supply circuit of the heating wire, and the voltage detecting point in the circuit loop where the heating wire is located is obtained.
  • the voltage values include:
  • the electronic cigarette is provided with a microprocessor and a first electrode electrically connected to the microprocessor and the heating wire a first member and a second switch member; wherein the microprocessor, the first switch member and the heating wire are connected to both ends of the power supply circuit to form a first loop, the microprocessor, the second a switching device, a voltage dividing resistor in the voltage dividing module, and the heating wire are connected to two ends of the power supply circuit to form a second loop;
  • the second switch is controlled to be closed to operate the heating wire, and when the microprocessor controls the first The second part is closed, then the control is The first shutoff member is closed to obtain the voltage value of the end of the heating wire.
  • the method further comprises the following steps:
  • S4. Output an alarm message for reminding the user that the smoke oil is exhausted, and the alarm information includes at least one of text information, voice information, vibration information, and light information.
  • the inter-turn interval of the heating wire from the initial energization to the first preset temperature and the atomization power reaching the equilibrium ⁇ is recorded, and the electronic cigarette is determined after the inter-turn interval is greater than a preset value.
  • the middle smoke oil is exhausted, thereby keeping the circuit path of the battery assembly and the atomizing assembly in a broken state, and stopping the supply of the heating wire. That is to say, the specific heat capacity of the smoke oil is greater than the heat capacity of the heating wire (that is, when the smoke oil and the smoke oil absorb the heat generated by the heating wire), the heating wire reaches a certain temperature and maintains the power balance between the daytimes and no smoke oil.
  • the heating wire is in contact with the smoke oil, thereby judging whether the smoke oil in the electronic cigarette is exhausted, and after determining that the smoke oil is about to run out, stop supplying power to the heating wire; effectively solving
  • the electronic cigarette can not let the user know whether the smoke oil is about to be exhausted, and the smoking is continued, and the technical problem of burning the cotton is realized, and the battery component is stopped when the smoke oil is about to be exhausted.
  • the heating wire is powered, so it will refuse to respond to the user's smoking action, stop the atomization work, to avoid the phenomenon of burning, thereby improving the user experience.
  • the method avoids the use of the electronic cigarette in the prior art after the e-cigarette is used for a period of time, because the e-cigarette is heated during use. There is temperature deposition around the wire, which makes it impossible to accurately detect the presence of smoke oil in the atomizer.
  • FIG. 1 is a block diagram of an internal circuit structure of an electronic cigarette according to the present invention
  • FIG. 2 is a flow chart of a first method for detecting whether smoke oil in an electronic cigarette is exhausted according to the present invention
  • 3A is a flow chart of a second method for detecting whether smoke oil is exhausted in an electronic cigarette according to the present invention
  • 3B is a third flowchart of a method for detecting whether smoke oil is exhausted in an electronic cigarette according to the present invention
  • FIG. 4 is a flow chart of a fourth method for detecting whether smoke oil in an electronic cigarette is exhausted according to the present invention
  • FIG. 5 is a block diagram showing an internal circuit structure of an electronic cigarette corresponding to the method of FIG. 4 according to the present invention
  • FIG. 6 is a schematic diagram of a circuit principle of a specific embodiment corresponding to FIG. 5 according to the present invention.
  • FIG. 7 is a flow chart of a fifth method for detecting whether smoke oil in an electronic cigarette is exhausted according to the present invention.
  • FIG. 8 is a block diagram showing an internal circuit structure of an electronic cigarette corresponding to the method of FIG. 7 according to the present invention.
  • FIG. 9 is a block diagram showing the internal circuit structure of the electronic cigarette further extended on the basis of FIG. 8;
  • FIG. 10 is a schematic diagram of a microprocessor and its peripheral circuits according to an embodiment of the present invention.
  • FIG. 11 is a schematic circuit diagram of detecting a voltage at an end of a heating wire by a partial pressure according to the present invention.
  • FIG. 12 is a schematic diagram of a linear voltage regulator circuit used in an internal circuit of an electronic cigarette according to the present invention.
  • FIG. 13 is a schematic diagram of a reset circuit used in an internal circuit of an electronic cigarette according to the present invention.
  • FIG. 14 is a flow chart of a sixth method for detecting whether smoke oil in an electronic cigarette is exhausted according to the present invention.
  • 15 is a schematic diagram of a display alarm circuit used in an internal circuit of an electronic cigarette according to the present invention.
  • 16 is a schematic diagram of a trigger circuit used in an internal circuit of an electronic cigarette according to the present invention.
  • FIG. 17 is a schematic diagram of a charging management sub-circuit of a power supply circuit used in an internal circuit of an electronic cigarette according to the present invention.
  • FIG. 18 is a schematic diagram of an external charging sub-circuit of a power supply circuit used in an internal circuit of an electronic cigarette according to the present invention.
  • FIG. 19 is a schematic diagram of a battery voltage detecting circuit used in an internal circuit of an electronic cigarette according to the present invention.
  • FIG. 20 is a schematic diagram of a battery protection circuit used in an internal circuit of an electronic cigarette according to the present invention.
  • Embodiments of the present invention provide a method for detecting whether smoke oil in an electronic cigarette is exhausted, and the method for solving the prior art that the electronic cigarette cannot let the user know whether the smoke oil is about to be exhausted, and the smoke oil is about to be exhausted.
  • the battery pack stops supplying power to the heating wire, so it will refuse to respond to the user's smoking action, stop the atomization work, to avoid the phenomenon of burning cotton. , thereby improving the user experience.
  • the electronic cigarette includes an atomizing assembly for storing and atomizing the smoke oil and a battery assembly for powering the atomizing assembly.
  • the atomizing assembly includes a heating wire 2.
  • the battery pack includes a detection control circuit 1, a power supply circuit 3, and a power supply circuit 3 supplies power to the detection control circuit 1 and the heating wire 2.
  • the method of the present invention includes the following steps:
  • step S0 detecting the smoke oil detection trigger signal, proceeds to step S1;
  • the starting device, the battery assembly supplies power to the heating wire for atomizing the smoke oil in the atomizing assembly at a first preset voltage, so that the heating wire operates at the first preset power,
  • the first preset power is lower than a normal atomizing power of the electronic cigarette;
  • the detection control circuit 1 starts to calculate the circuit path of the battery component and the atomization component to be in a conductive state, and the power supply circuit 3 of the battery component adopts a first preset.
  • the voltage is supplied to the heating wire 2 for atomizing the smoke oil in the atomizing assembly, so that the heating wire 2 operates at a first preset power, wherein the first predetermined power is lower than the normal atomization of the electronic cigarette
  • the power is preferably less than half of the normal atomization power;
  • the detection control circuit 1 actually detects the temperature of the heating wire 2, when the heating wire
  • the power balance means that in order to maintain the first temperature value, the atomization power of the heating wire is kept within a preset power range, that is, it is regarded as power balance.
  • the detection control circuit 1 determines that the inter-turn interval is greater than a preset value, determining that the smoke in the electronic cigarette is exhausted, switching the circuit path of the battery component and the atomizing component To break State, so that the power supply circuit 3 stops supplying power to the heating wire 2.
  • the inter-turn interval of the heating wire from the initial energization to the first preset temperature and the atomization power reaching the equilibrium ⁇ is recorded, and the electronic cigarette is determined after the inter-turn interval is greater than a preset value.
  • the middle smoke oil is exhausted, thereby keeping the circuit path of the battery assembly and the atomizing assembly in a broken state, and stopping the supply of the heating wire. That is to say, the specific heat capacity of the smoke oil is greater than the heat capacity of the heating wire (that is, when the smoke oil and the smoke oil absorb the heat generated by the heating wire), the heating wire reaches a certain temperature and maintains the power balance between the daytimes and no smoke oil.
  • the heating wire is in contact with the smoke oil, thereby judging whether the smoke oil in the electronic cigarette is exhausted, and after determining that the smoke oil is about to run out, stop supplying power to the heating wire; effectively solving
  • the electronic cigarette can not let the user know whether the smoke oil is about to be exhausted, and the smoking is continued, and the technical problem of burning the cotton is realized, and the battery component is stopped when the smoke oil is about to be exhausted.
  • the heating wire is powered, so it will refuse to respond to the user's smoking action, stop the atomization work, to avoid the phenomenon of burning, thereby improving the user experience.
  • the specific heat capacity of the heating wire is not A, and the specific heat capacity of the oil is B (greater than A), and the specific heat capacity of the smoked iron on the heating wire is C, wherein C Greater than A and less than B. It is well known that the greater the specific heat capacity of a substance, the less time it takes to release the same energy, and the present invention is based on this principle.
  • the method of the present invention avoids the use of the exhaustion of the used oil after the e-cigarette is used for a period of time, because the electronic cigarette is in use, compared with the method of detecting the temperature change rate by the electric current.
  • the temperature change speed is calculated by calculating the temperature change amount in the predetermined turn and the predetermined time, and the predetermined time is not too long, and heating is caused at different initial ambient temperatures.
  • the temperature change rate is different, and in the present application, the operation is performed at a lower first preset power, and then the judgment reaches a higher first preset temperature and the atomization power balance ⁇ the inter-turn interval, the initial environment The impact is smaller and the judgment results are more accurate.
  • the triggering event may be to connect the battery assembly to the atomizing assembly.
  • the smoke detection trigger signal in the step SO is a battery pack.
  • the step SO is specifically as follows: S01, detecting a trigger signal generated after the battery component is connected to the atomizing component.
  • an electronic cigarette has two electrodes connected to a heating wire in the atomizing assembly.
  • the detection signal can improve the electrode structure, and increase the third electrode connected between the atomizing component and the battery component.
  • the path of the third electrode is turned on to generate a detection signal;
  • Some of the electrodes obtain a detection signal, for example, one electrode is grounded, the other electrode is connected to a pin of the microprocessor chip, and the microprocessor outputs a high level to the electrode connected thereto, when the atomizing component is connected to the battery component, Then, the pin level of the microprocessor is pulled low, that is, the microprocessor receives a low level trigger signal, and then the microprocessor determines that the atomizing component is connected to the battery component according to the low level trigger signal.
  • a smoking event that triggers fever of the heating wire can be directly used as a triggering event.
  • the smoke detecting trigger signal in the step so is a smoking signal for triggering the atomizing component of the atomizing component in the electronic cigarette
  • the step SO is specifically: S02, detecting a smoking signal.
  • the generation and detection of smoking signals is a prior art.
  • a smoking signal generated by a user's smoking airflow sensor or a smoking button for controlling the operation of the electronic cigarette is triggered to generate a smoking signal, and therefore, no further details are provided herein.
  • step S3 further includes: when the daytime The interval is not greater than the preset value ⁇ , the battery component supplies power to the heating wire at a second preset voltage, and the second preset voltage is greater than the first preset voltage.
  • the e-cigarette works with normal atomization power, and the user can smoke normally.
  • a specific trigger event may be set for the method of the present invention, for example, a soot detecting switch is specially configured to implement the function of the present invention, and the utility model is connected with the microprocessor, and the soot detecting is pressed. Generate corresponding action signals.
  • the smoke oil detection trigger signal in the step SO is an action signal of the oil smoke detection.
  • Step S0 is specifically: S03, detecting an action signal of the soot detection.
  • the triggering event may also preferably be a collection of the above-mentioned events, that is, the connection of the battery component and the atomizing component, the smoking ⁇ , and the start of the soot detection are all required to perform the smoke oil detection, that is,
  • the smoke detecting trigger signal in the step S 0 is any one of the following: a trigger signal generated by connecting the battery assembly and the atomizing component, a smoking signal, and an action signal of the soot detecting. Therefore, step so can be any of the following specific steps: [0074] the SO detects a trigger signal generated after the battery component is connected to the atomizing component;
  • the atomizing assembly is provided with a smoke adsorbing member for adsorbing smoke oil, and the heating wire is attached to the smoke oil adsorbing member to atomize the smoke oil in the smoke oil adsorbing member.
  • the first preset temperature is less than the melting point/flaming point temperature of the smoke oil adsorbing member to prevent the smoke adsorbing member from melting at a high temperature, and generally the first preset temperature is greater than 100 ° C.
  • the difference between the first preset temperature and the melting point/flaming point temperature of the smoke adsorbing member is 10 ° C. Between 50 ° C.
  • the difference between the first preset temperature and the flash point of the cotton is above 10 ° C, and is generally set to be less than 15 to 20 ° C.
  • step S2 In conjunction with a specific circuit, two specific temperature detecting methods in step S2 are provided below.
  • the first temperature detecting method is to directly detect the temperature.
  • the detecting the heating wire temperature in the step S2 comprises: detecting the temperature of the heating wire by a temperature sensor.
  • the detection control circuit 1 includes a microprocessor 10 and a temperature detecting sub-circuit 11 connected to the microprocessor 10.
  • the microprocessor 10 is configured to control the power supply circuit 3 to supply or de-energize the heating wire 2; the temperature detecting sub-circuit 11 is configured to obtain the temperature of the heating wire 2 and send it to the microprocessor. 10.
  • the temperature detecting sub-circuit 11 may employ a temperature sensor, the temperature sensor is a thermocouple temperature sensor, and the thermocouple temperature sensor is connected to an end of the heating wire 2.
  • the thermocouple temperature sensor includes: a first end line 22 and a second end line 23 connected to the end portion 211 of the heating wire 2; wherein the first end line 22 and the second end line 23 are of two types. Wires of different materials (including alloy wire and non-alloy wire), such as copper, iron or constantan.
  • alloy wire and non-alloy wire such as copper, iron or constantan.
  • the other end portion 212 of the heating wire 2 opposite to the end portion 211 is connected to one end of the electron beam 24 (which is generally conductive); the other end of the electron beam 24 is connected to the positive electrode of the battery, and the second end line 33 The other end is connected to the ground for forming a power supply circuit of the heating wire 2; the end of the first end line 32 and the second end line 33 remote from the heating wire 2 is connected to the signal amplifier 25 for forming a temperature detecting circuit of the heating wire 2. .
  • the microprocessor 10 of the electronic cigarette controls the power supply loop of the heating wire 2 to be turned on, and the heating wire 2 is energized and heated, at the first end line 32 (such as nickel-chromium material) and the first The two end wires 33 (such as the constantan material) form a temperature difference at both ends.
  • the first end line 32 such as nickel-chromium material
  • the first end wires 33 such as the constantan material
  • the electromotive force signal is outputted at the cold end of the high-impedance alloy wire and the low-resistance wire; on the other hand, the signal input end of the signal amplifier 25 Connected to the other end of the first end line 32 and the second end line 33 to obtain an electromotive force signal, and amplify the same, and further send the amplified electromotive force signal to the microprocessor 10 of the electronic cigarette for processing to obtain heat.
  • the second temperature detecting method is to indirectly detect the temperature.
  • the detecting the heating wire temperature in the step S2 includes: obtaining a voltage value of a voltage detecting point in a circuit loop where the heating wire is located, and acquiring a resistance of the heating wire based on the voltage value, The temperature of the heating wire is obtained based on the resistance of the heating wire and the resistance temperature relationship table of the pre-stored heating wire.
  • the detection control circuit 1 includes: a microprocessor 10 and a voltage detecting sub-circuit 12 connected to the microprocessor 10.
  • the voltage detecting sub-circuit 12 is configured to obtain the voltage value of the voltage detecting point (such as the end of the heating wire) in the circuit loop where it is located, and send it to the microprocessor 10; the microprocessor 10 is also used to The voltage value acquires the electric resistance of the heating wire, and the temperature of the heating wire is obtained based on the resistance of the heating wire and the resistance temperature relationship table of the pre-stored heating wire.
  • a voltage dividing module for dividing the voltage may be connected in series in the power supply circuit of the heating wire, and the voltage value of the voltage detecting point in the circuit loop where the heating wire is located includes: obtaining a point in the voltage dividing module a voltage dividing value across the voltage resistor, and obtaining a voltage value of the end of the heating wire based on a power supply voltage of the power supply circuit and the voltage dividing value.
  • the voltage detecting sub-circuit 12 includes: a second switching member 122 and a voltage dividing module 121, at the voltage detecting point being the heating wire end portion.
  • the voltage dividing module 121 and the second shutoff member 122 are connected in series between the microprocessor 10 and the end of the heating wire 2.
  • the voltage dividing module 121 is configured to convert the voltage value Switching to a readable voltage causes the microprocessor 10 to calculate the resistance of the heating wire 2 based on the readable voltage; wherein the readable voltage is a voltage that the microprocessor 10 can recognize.
  • the second shutoff member 122 is for turning on or off under the control of the microprocessor 10 to control the voltage detecting sub-circuit 12 to detect the voltage value or stop detecting the voltage value.
  • the detection control circuit 1 further includes reference to FIG. 8 and FIG. 9 further comprising: a first switching member 13 connected to the microprocessor 10; the microprocessor 10 is configured to control the first switching member 13 Turning on or off, to control the power supply circuit 3 to supply power to the heating wire 2 or to stop power supply.
  • the microprocessor 10, the first switch member 13 and the heating wire 2 are connected to the two ends of the power supply circuit 3 to form a first loop, and the microprocessor 10 and the second switch member 122, the voltage dividing module 121 and the heating wire 2 are connected to the two ends of the power supply circuit 3 to form a second circuit; when the microprocessor 10 controls the first switching element 13 to start, control the second The closing member 122 is closed to operate the heating wire 2, and when the microprocessor 10 controls the second closing member 122 to open, the first closing member 13 is controlled to be closed to obtain The voltage value at the end of the heating wire 2 is described.
  • the first switch member 13 and the second switch member 122 are both field effect transistors; the drain of the first switch member 13 is connected to the heating wire 2 The source of the first switch member 13 is grounded, and the microprocessor 10 is connected to the gate of the first switch member 13 for controlling the first switch member 13 to be turned on or off. ⁇ , controlling the power supply circuit 3 to supply power to the heating wire 2 or stopping the power supply; the voltage dividing module 121 includes a first resistor, a second resistor, and a first capacitor, and one end of the first resistor and the heat is generated The wire 2 is connected, the other end of the first resistor is connected to the second resistor, the first capacitor and the microprocessor, and the second resistor is connected to the other end of the first capacitor and grounded; a drain of the second switch member 122 is connected to the heating wire 2 and the first resistor, a source of the second switch member 122 is grounded, and the microprocessor 10 and the second switch a gate connection of the member 122 for controlling the
  • FIG. 10 and FIG. 11 Taking a specific internal circuit of an electronic cigarette as an example, please refer to FIG. 10 and FIG. 11.
  • the microprocessor 10 in FIG. 9 corresponds to the single chip STM32F030K6 in FIG. 10, and the heating wire 2 and the first switching element in FIG. 13 and the second shutoff member 1 22 correspond to the heating wire L, the field effect transistor and the Q2 in Fig. 11, respectively; the letters on the terminals in Fig. 10 and Fig. 11 indicate that the transmitted signal is marked, and the same signal mark is marked. Terminals are connected, another In other words, other specific circuit diagrams in this embodiment also follow this rule. Referring to Fig. 10 and Fig.
  • the heating wire L (generally about 0.3 ohms) 0+ is connected to the battery positive electrode B+, the heating wire L is connected to the drain of the field effect transistor Q1, and the source of the FET Q1.
  • the PB0 end of the No. 14 pin of the STM32F030K6 is connected to the gate of the FET Q1, and is used to transmit the PWM wave signal labeled DRIV to control the Q1 to be turned on or off, thereby controlling the power supply loop of the heating wire L to be turned on. Or broken.
  • the first resistor, the second resistor and the first capacitor of the voltage dividing module 121 in FIG. 9 correspond to the resistor R38, the resistor R39 and the capacitor C22 in FIG. 11, respectively.
  • One end of the resistor R38 is connected to the 0-end of the heating wire L, and the other end of the resistor R38 is connected to the resistor R39, the capacitor C22, and the No. 8 pin PA2 of the single chip STM32F030K6, and the other end of the resistor R39 and the capacitor C22 are connected and grounded.
  • the drain of the FET Q2 is connected to the 0-end of the heating wire L and the resistor R38, and the source of the FET Q2 is grounded.
  • the PB1 end of the pin 15 of the STM32F030K6 is connected to the gate of the FET Q2,
  • the control field effect transistor Q2 is turned on or off, to control the voltage dividing module composed of the resistors R38, R39 and the capacitor C22 to obtain the voltage value of the 0-end of the heating wire, and convert the voltage value into the readable voltage of the single chip STM32F030K6 or stop. Obtain the voltage value. This is because the voltage value that can be recognized according to the type of the microprocessor may be limited. For example, in the specific implementation circuit shown in FIG. 10 and FIG.
  • the single chip STM32F030K6 can read the voltage value lower than 3V, however, the electronic cigarette
  • the supply voltage of the battery to the heating wire L is usually about 4.2V, that is, in the case of normal battery power, the 0-terminal voltage value of the heating wire L is 3V or more.
  • the voltage dividing module is set to make the micro The processor can read a voltage value lower than 3V through the voltage dividing module, and indirectly read the voltage value of the 0-end of the heating wire through the lower voltage value.
  • the drain of the FET Q1 is directly connected to the 0-end of the heating wire L, and the drain of the FET Q2 is passed through the resistor R41 and the heating wire L having a certain resistance (for example, 3 ohms).
  • the 0-terminal connection when Q1 and Q2 are turned on, the current output from the 0-end of the heating wire L flows directly from Q1 to the ground, and the ⁇ Q 2 branch does not function.
  • the control logic for Q1 and Q2 is: When the single-chip microcomputer ST M32F030K6 controls the FET Q1 ⁇ , the control FET Q2 is turned off to make the heating wire L work; when the single chip STM32F030K6 controls the field effect When the tube Q2 is turned on, the control field effect transistor Q1 is turned off to obtain the voltage value of the end portion of the heating wire L.
  • the electronic cigarette further includes: a linear regulator circuit 4 connected to the power supply circuit 3 and the microprocessor 10, for adjusting the power supply circuit 3 to the microprocessor 1
  • the operating voltage is provided to stabilize the regulated operating voltage at the nominal operating voltage of the microprocessor 10.
  • FIG. 12 it is a schematic diagram of a linear voltage regulator circuit used in an internal circuit of an electronic cigarette. Referring to FIG. 10 and FIG. 12, the rated operating voltage of the single chip STM32F030K6 in FIG. 10 is 3V, in FIG.
  • the positive voltage of the battery is input to the voltage regulator TLV70430 through the voltage regulator D5 to adjust the voltage of the electronic cigarette battery output greater than 3V, and output a stable 3V VDD voltage to the microprocessor (ie, the single chip STM32F030K6 shown in FIG. 10)
  • the #1 pin of the VDD terminal provides the microprocessor with an operating voltage that allows it to operate normally.
  • the electronic cigarette further includes: a reset circuit 5 connected to the microprocessor 10, configured to detect an internal working voltage of the microprocessor 10, and A reset signal is output to the microprocessor 10 after the internal operating voltage is lower than the first predetermined voltage.
  • FIG. 13 it is a reset circuit schematic diagram used in an internal circuit of the electronic cigarette. Referring to FIG. 10 and FIG. 13 , the input terminal Vin of the reset circuit is connected to the VDD terminal of the No. 1 pin of the single chip STM32F030K6. No.
  • the reset circuit detects a voltage VDD acquires STM32F030K6 microcontroller, and the voltage VDD is below 2.2V in inches, issued to pin No. 4 NRST end MCU STM32F030 K6
  • a reset signal (such as a low level signal) resets the microprocessor to prevent the microprocessor from getting out of control.
  • step S3 the method further includes the steps of:
  • a display module for displaying text information, an audio module for broadcasting voice information, a vibration module for emitting vibration information, or an LED lamp for emitting light information may be set in the electronic cigarette, wherein the light information may be Light information with different brightness or different light information.
  • the electronic cigarette can be controlled to stop working to avoid the phenomenon of burning, and the user can also remind the user that the smoke is exhausted. , thereby improving the user experience.
  • the electronic cigarette can be controlled to stop working to avoid the phenomenon of burning, and the user can also remind the user that the smoke is exhausted. , thereby improving the user experience.
  • the electronic cigarette further includes: an alarm circuit 6 connected to the microprocessor 10; the microprocessor 10 is configured to determine the The smoke oil in the electronic cigarette is exhausted, and the alarm data is output to the alarm circuit 6; the alarm circuit 6 is configured to output alarm information based on the alarm data to remind the user that the smoke oil is exhausted; wherein the alarm information includes text At least one of information, voice information, vibration information, and lighting information.
  • a display module for displaying text information, an audio module for broadcasting voice information, a vibration module for emitting vibration information, or an LED lamp for emitting light information may be set in the electronic cigarette, wherein the light information may be Light information with different brightness or different light information.
  • the alarm circuit 6 displays output alarm information
  • the alarm circuit 6 includes: a display screen connected to the microprocessor 10, and the microprocessor 10 and the display a wake-up sub-circuit of the screen connection;
  • the microprocessor 10 is configured to output a wake-up trigger signal to the wake-up sub-circuit after determining that the smoke is exhausted in the electronic cigarette, and output the same to the display screen for display output Alarm data;
  • the wake-up sub-circuit is configured to wake up the display screen after receiving the wake-up trigger signal;
  • the display screen displays a text message to remind the user that the smoke oil is exhausted based on the alarm data after waking up .
  • the alarm circuit includes a 96 ⁇ 16 dot matrix organic electro-laser display OLED and is connected thereto.
  • the wake-up sub-circuit includes a PNP-type transistor Q3, an NPN-type transistor 04, and a 1>channel FET Q5.
  • the base of the transistor Q3 is connected to the 21st pin PA11 of the STM32F030K6 of the single-chip microcomputer, and the emitter and the input VDD are connected.
  • the voltage and collector are connected to the 8th pin of the display.
  • the base of the transistor Q4 is connected to the collector of the tertiary tube Q3, the emitter is grounded, the collector is connected to the positive voltage terminal B+, and the gate of the FET Q5. It is connected to the battery positive voltage terminal B+ through the resistor R51, the source is directly connected to the battery positive voltage terminal B + , and the drain is connected to the 5th pin VBAT (operating voltage input terminal) of the display screen.
  • the working principle of the display alarm circuit is as follows: In the case that the electronic cigarette smoke is sufficient, the single chip STM32F0 30K6 outputs a high level signal to the base of the third stage tube Q3 through the PA11 end of the 21st pin, so that the triode Q3 Q4 and FET Q5 are all off and the display is powered off.
  • the wake-up trigger is triggered by the base of the 21st pin PA11 to the base of the tertiary tube Q3.
  • the signal (such as a low level signal), the transistor Q3 is turned on, and the transistor Q4 and the field effect transistor Q5 are turned on in turn, and the display is energized.
  • the SCL end of the 10th pin and the SDA end of the 11th pin of the display are respectively connected with the PA9 end of the 19th pin of the STM32F030K6 and the PA10 end of the 20th pin, that is, The single chip STM32F030K6 writes the alarm data for displaying the output to the display through the PA9 end of the 19th pin and the PA10 end of the 20th pin, so that the display screen displays the output based on the alarm data after waking up to remind the user of the fuel consumption. Text information.
  • the power supply circuit 3 has a function module for charging an external device
  • the electronic cigarette further includes a switch trigger circuit 7 connected to the microprocessor 10
  • the first trigger switch 71 is configured to output a first trigger signal indicating that the smoking action is detected to the microprocessor 10 after receiving the triggering action, so that the microprocessor 10 is based on the first
  • the trigger signal controls the power supply circuit 3 to supply power to the heating wire 2
  • the second trigger switch 72 is configured to output a second trigger signal indicating that the smoking power is increased to the microprocessor 10 after receiving the triggering action So that the microprocessor 10 controls the power supply circuit 3 to increase the output power to the heating wire 2 based on the second trigger signal
  • the third trigger switch 73 is configured to receive the triggering action.
  • a third trigger signal indicating that the smoking power is reduced, so that the microprocessor 10 controls the power supply circuit 3 to reduce the heating wire 2 based on the third trigger signal.
  • FIG. 16 is a schematic diagram of a trigger circuit used in an internal circuit of an electronic cigarette, and the first trigger switch 71, the second trigger switch 72, and the third trigger in FIG.
  • the switch 73 and the fourth trigger switch 74 respectively correspond to the switch (S1-S4) in FIG. 16, and the switch (S1-S4) in FIG.
  • the switch SI receives the trigger action, outputting a level signal (such as a high level signal) indicating that the smoking action is detected to the single chip microcomputer STM32F030K6, so that the microprocessor controls the conduction heat based on the high level signal.
  • a level signal such as a high level signal
  • the power supply loop of the wire L when the switch S1 does not receive the trigger action ⁇ , the high-level signal is not detected at the PB7 end of the microprocessor No. 30 pin, and the power supply circuit of the blow-up heating wire L is controlled; After the trigger action, output a level signal (such as a high level signal) indicating that the smoking power is increased to the single chip STM32F030K6, so that the single chip STM32F030K6 is adjusted based on the high level signal.
  • the duty ratio of the PWM wave that is used to control the conduction of the FET Q1 is increased to increase the output power to the heating wire L.
  • 27 pin PB4 is not A high level signal is detected, and the duty ratio of the PWM wave for controlling the conduction of the field effect transistor Q1 is kept unchanged; when the triggering action is received by the switch S3, the level indicating the reduction of the smoking power is output to the single chip microcomputer STM32F030K6. a signal (such as a low level signal), so that the single chip STM32F030K6 adjusts the duty ratio of the PWM wave used to control the conduction of the field effect transistor Q1 based on the low level signal to reduce the output power to the heating wire L, when When S3 does not receive the trigger action, the low-level signal is not detected at the PB5 end of the No.
  • a signal such as a low level signal
  • S4 After receiving the trigger action, S4 outputs a level signal (such as a high level signal) indicating charging to the external device to the single chip microcomputer STM32F030K6, so that the single chip microcomputer STM32F030K6 controls the power supply circuit of the electronic cigarette to charge the external device based on the high level signal, when Off S4 does not receive a trigger action inches, PB3 pin 26 of a microcontroller STM32F030K6 the high level signal is not detected, and controls the power supply circuit of the electronic cigarette stop the charge to an external device.
  • a level signal such as a high level signal
  • the power supply circuit 3 includes: an internal charging interface 31, a charging management sub-circuit 32, a battery 33, and an external charging sub-circuit 34 connected in sequence;
  • the charging interface 31 is for connecting with an external power source and acquiring electric energy;
  • the charging management sub-circuit 32 is further connected to the microprocessor 10 for performing the battery charging management signal based on the microprocessor 10
  • the battery 33 performs charge management;
  • the external charging sub-circuit 34 is also coupled to the microprocessor 10 for charging an external device based on an external charging control signal of the microprocessor 10.
  • the external charging sub-circuit 34 includes: a third switching member connected to the microprocessor 10, and a fourth switching member connected to the third switching member and the battery 33, a fourth step is a boosting module connected to the battery 33, and an external charging interface connected to the boosting module 343 and configured to be connected to an external device; the third switching device is configured to acquire the external The charging control signal is turned on to turn on the fourth switching element, thereby causing the boosting module to communicate with the battery; the boosting module boosts the battery voltage, and boosts the battery The voltage is delivered to the external device through the external charging interface.
  • FIG. 17 and FIG. 18 is a schematic diagram of a power supply circuit used in an internal circuit of an electronic cigarette.
  • the circuit in FIG. 17 and the circuit in FIG. 18 are connected through a terminal Um.
  • the P1 interface (corresponding to the internal charging interface 31 in Fig. 9) is a USB interface for external charging of the electronic cigarette
  • the No. 1 pin of the P1 is connected to the battery charging management chip AP5056
  • the pins 6 and 7 of the AP5056 are connected.
  • the PF1 end of the pin is connected to the PFO end of the 2nd pin, and is used for receiving the battery charging management signal sent by the single chip to charge and manage the battery.
  • the MCU when the battery needs to be charged, the MCU outputs a low-level signal to the No. 7 pin of the AP5056 through the PF 0 terminal of the No. 2 pin, and the output to the No. 6 pin of the AP5056 through the PF1 end of the No. 3 pin.
  • Level signal so that the electronic cigarette battery is in the state of charging; oppositely, when the battery is charged, the MCU outputs a high level signal to the No. 7 pin of the AP5056 through the PF0 end of the No. 2 pin, and passes through the No. 3 tube.
  • the pin PF1 outputs a low level signal to the 6th pin of the AP5056, so that the electronic cigarette battery is in a state of being completed.
  • the main boost module performs boost processing to boost the battery voltage of the electronic cigarette (such as 4V) to the 5V voltage required for charging of a general electronic device (such as a mobile phone), and outputs it through a P2 interface (specifically, a USB interface). . Further, in order to realize the management of the external charging function of the electronic cigarette, as shown in FIG.
  • the external charging sub-circuit includes: a field effect transistor Q6 connected in series with the power supply loop of the boost converter MT3608, and a base connected to the single chip STM32F030K6 and set A transistor Q7 whose electrode is connected to the gate of Q6.
  • the switch S4 receives the trigger signal
  • the MCU outputs a high level signal to the base of the transistor Q7 through the PA7 terminal of the 13th pin, so that the transistor Q7 and the field effect transistor Q6 are both Turning on, the boost module is energized, and the external power is supplied through the P2 interface.
  • the electronic cigarette battery is prohibited from supplying power to the external device.
  • the single chip STM32F030K6 outputs a low voltage to the base of the transistor Q7 through the PA7 end of the 13th pin.
  • the signal is flat so that the transistor Q7 and the FET Q6 are both off, so that the MT3608 is inoperable.
  • the 2-4 pin of the P1 interface is connected to the pins 4, 24, and 23 of the STM32F030K6, which can be used to program the STM32F030K6.
  • the electronic cigarette further includes: a battery voltage detecting circuit 8 connected to the power supply circuit 3, configured to detect a voltage of the battery in the power supply circuit 3, and The power supply circuit 3 is controlled to stop supplying power to the heating wire 2 when the battery voltage is lower than the second predetermined voltage.
  • a battery voltage detecting circuit composed of resistors R44, R45 and capacitor C25. When the voltage of the battery is less than 3.3V, the control battery cannot supply power to the heating wire.
  • the electronic cigarette further includes: a power supply with the power supply circuit 3
  • a battery protection circuit 9 connected at both ends of the pool is used for overcharging, overdischarging or short circuit protection of the battery.
  • the battery protection circuit includes a battery protection integrated chip MM3280 and a FET Q8, the MM end of the MM3280 pin VDD is connected to the battery positive voltage output terminal B+, the sixth pin VSS terminal and the battery negative voltage.
  • the output terminal B-connection is used to detect whether the battery is abnormal (such as overcharge, overdischarge or short circuit); the DO end of the MM3280 pin 1 is connected to the gate of the FET Q8, which is used to detect abnormality in the battery.
  • the control field effect transistor Q8 is turned on to protect the battery.
  • the electronic cigarette of the present application when the user smokes and the smoke oil is about to be exhausted, the battery component stops supplying power to the heating wire, and therefore refuses to respond to the user's smoking action and stops the atomization work. In order to avoid the occurrence of cotton burning, the same can also remind users that the smoke oil is exhausted, thus improving the user experience.
  • the electronic cigarette has the functions of charging an external electronic device, managing and protecting the battery, and has various functions and stable performance, and has good practicability.
  • the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Further, the present invention may take the form of a computer program product embodied in one or more of which comprises a computer usable storage medium having computer-usable program code (including but not limited to, disk storage, CD-R 0 M, optical memory, etc.).

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Abstract

一种检测电子烟中烟油是否耗尽的方法，电子烟包括用于存储及雾化烟油的雾化组件及用于为雾化组件供电的电池组件，该方法包括以下步骤：S0、检测到烟油检测触发信号；S1、开始计时，电池组件以第一预设电压向雾化组件中用于雾化烟油的发热丝供电，以使发热丝以第一预设功率工作，所述第一预设功率低于电子烟的正常雾化功率；S2、实时检测发热丝温度，当所述发热丝的温度上升到第一预设温度且雾化功率达到平衡时，停止计时并确定时间间隔；S3、当所述时间间隔大于预设值时，确定所述电子烟中烟油耗尽，所述电池组件停止给所述发热丝供电。

Description

一种检测电子烟中烟油是否耗尽的方法
技术领域
[0001] 本发明涉及电子烟技术领域， 尤其涉及一种检测电子烟中烟油是否耗尽的方法 背景技术
[0002] 电子烟是一种较为常见的仿真香烟电子产品， 主要用于戒烟和替代香烟； 电子 烟的结构主要包括电池组件和雾化组件； 当检测到吸烟者的吸烟动作吋， 电池 组件为雾化组件供电， 使雾化组件处于幵启状态； 当雾化组件幵启后， 发热丝 发热， 烟油受热蒸发雾化， 形成模拟烟气的气雾， 从而让使用者在吸吋有一种 类似吸烟的感觉。
[0003] 现有的电子烟在抽烟前段吋烟油充足， 因而烟气口感纯正， 但是电子烟使用的 是不透明的储油腔， 用户无法看到储油腔中的烟油余量， 并且电子烟也不具有 烟油余量提示、 警示功能， 导致到抽烟后段， 烟油变少或耗尽吋， 继续抽烟而 导致烧棉异味的情况， 从而给用户带来很不好的体验。
[0004] 也就是说， 现有技术中存在， 电子烟无法让用户获知烟油是否即将耗尽， 且在 烟油即将耗尽吋继续抽烟， 而导致烧棉的技术问题。 。
技术问题
[0005] 本发明针对现有技术中存在的， 电子烟无法让用户获知烟油是否即将耗尽， 且 在烟油即将耗尽吋继续抽烟， 而导致烧棉的技术问题， 提供一种检测电子烟中 烟油是否耗尽的方法及一种电子烟， 实现了在烟油即将耗尽吋， 电池组件停止 给所述发热丝供电， 因此会拒绝响应用户的吸烟动作， 停止雾化工作， 以避免 烧棉现象发生， 从而提高用户使用体验
问题的解决方案
技术解决方案
[0006] 本发明提供的一种检测电子烟中烟油是否耗尽的方法， 所述电子烟包括用于存 储及雾化烟油的雾化组件及用于为所述雾化组件供电的电池组件， 方法包括以 下步骤：
[0007] S0、 检测到烟油检测触发信号， 进入步骤 S1 ;
[0008] Sl、 幵始计吋， 所述电池组件以第一预设电压向雾化组件中用于雾化烟油的发 热丝供电， 以使所述发热丝以第一预设功率工作， 所述第一预设功率低于电子 烟的正常雾化功率；
[0009] S2、 实吋检测发热丝温度， 当所述发热丝的温度上升到第一预设温度且雾化功 率达到平衡吋， 停止计吋并确定吋间间隔；
[0010] S3、 当所述吋间间隔大于预设值吋， 确定所述电子烟中烟油耗尽， 所述电池组 件停止给所述发热丝供电。
[0011] 在本发明所述的检测电子烟中烟油是否耗尽的方法中， 所述电池组件与所述雾 化组件为可拆卸连接， 所述步骤 so中的所述烟油检测触发信号为电池组件与雾 化组件连接后产生的触发信号。
[0012] 在本发明所述的检测电子烟中烟油是否耗尽的方法中， 所述步骤 SO中的所述烟 油检测触发信号为用于触发电子烟中的雾化组件正常雾化烟油的吸烟信号。
[0013] 在本发明所述的检测电子烟中烟油是否耗尽的方法中， 所述步骤 S3还包括： 当 所述吋间间隔不大于预设值吋， 所述电池组件以第二预设电压给所述发热丝供 电， 所述第二预设电压大于所述第一预设电压。
[0014] 在本发明所述的检测电子烟中烟油是否耗尽的方法中， 所述电子烟还包括一个 油烟检测幵关， 所述步骤 SO中的所述烟油检测触发信号为油烟检测幵关的动作 信号。
[0015] 在本发明所述的检测电子烟中烟油是否耗尽的方法中， 所述电池组件与所述雾 化组件为可拆卸连接， 所述电子烟还包括一个油烟检测幵关， 所述步骤 SO中的 所述烟油检测触发信号为以下任一种： 电池组件与雾化组件连接后产生的触发 信号、 吸烟信号、 油烟检测幵关的动作信号。 在本发明所述的检测电子烟中烟 油是否耗尽的方法中， 所述雾化组件内设置有用于吸附烟油的烟油吸附件， 所 述发热丝与所述烟油吸附件相贴合以雾化所述烟油吸附件中的烟油， 所述第一 预设温度小于所述烟油吸附件的熔点 /燃点温度。
[0016] 在本发明所述的检测电子烟中烟油是否耗尽的方法中， 所述第一预设温度与所 述烟油吸附件的熔点 /燃点温度的差值在 10°C至 50°C之间。
[0017] 在本发明所述的检测电子烟中烟油是否耗尽的方法中， 所述烟油吸附件的材质 为棉， 所述第一预设温度与棉的燃点的差值在 10°C以上。
[0018] 在本发明所述的检测电子烟中烟油是否耗尽的方法中， 所述第一预设温度大于
100°C=
[0019] 在本发明所述的检测电子烟中烟油是否耗尽的方法中， 所述步骤 S2中所述的实 吋检测发热丝温度包括： 通过温度传感器实吋检测所述发热丝的温度。
[0020] 在本发明所述的检测电子烟中烟油是否耗尽的方法中， 所述温度传感器为热电 偶温度传感器， 所述热电偶温度传感器与所述发热丝的端部相连。
[0021] 在本发明所述的检测电子烟中烟油是否耗尽的方法中， 所述步骤 S2中所述的实 吋检测发热丝温度包括： 实吋获取发热丝所在的电路回路中电压检测点的电压 值， 基于所述电压值获取所述发热丝的电阻， 基于所述发热丝的电阻和预存的 发热丝的电阻温度关系表获取所述发热丝的温度， 其中， 所述发热丝的阻值随 温度变化而变化。
[0022] 在本发明所述的检测电子烟中烟油是否耗尽的方法中， 所述电压检测点为发热 丝端部。
[0023] 在本发明所述的检测电子烟中烟油是否耗尽的方法中， 所述发热丝的供电回路 中串联有分压模块， 所述的获取发热丝所在的电路回路中电压检测点的电压值 包括：
[0024] 获取所述分压模块中的分压电阻两端的分压值， 并基于所述供电回路的供电电 压和所述分压值获取所述发热丝端部的电压值。
[0025] 在本发明所述的检测电子烟中烟油是否耗尽的方法中， 所述电子烟中设置有微 处理器及与所述微处理器和所述发热丝电连接的第一幵关件和第二幵关件； 其 中， 所述微处理器、 所述第一幵关件和所述发热丝连接于供电电路两端形成第 一回路， 所述微处理器、 所述第二幵关件、 所述分压模块中的分压电阻和所述 发热丝连接于供电电路两端形成第二回路；
[0026] 当所述微处理器控制所述第一幵关件幵启吋， 则控制所述第二幵关件关闭， 以 使所述发热丝工作， 当所述微处理器控制所述第二幵关件幵启吋， 则控制所述 第一幵关件关闭， 以获取所述发热丝端部的电压值。
[0027] 在本发明所述的检测电子烟中烟油是否耗尽的方法中， 在步骤 S3之后还包括步 骤：
[0028] S4、 输出提醒用户烟油耗尽的报警信息， 所述报警信息包括文字信息、 语音信 息、 振动信息和灯光信息四者至少其一。
发明的有益效果
有益效果
[0029] 本发明提供的一个或多个技术方案， 至少具有如下技术效果或优点：
[0030] 在本发明方案中， 记录发热丝从幵始通电至到达第一预设温度且雾化功率达到 平衡吋的吋间间隔， 并在吋间间隔大于预设值吋确定所述电子烟中烟油耗尽， 从而将电池组件与雾化组件的电路通路保持在断幵状态， 停止为所述发热丝供 电。 也就是说， 利用烟油比热容大于发热丝比热容的特点 （即当有烟油吋烟油 会吸收发热丝发热产生的热量） ， 使得发热丝达到特定温度且保持功率平衡的 吋间比没有烟油吋快， 通过检测吋间间隔的大小， 获知发热丝是否接触有烟油 ， 从而判断电子烟中烟油是否耗尽， 并在确定烟油即将耗尽吋， 停止为发热丝 供电； 有效地解决了现有技术中电子烟无法让用户获知烟油是否即将耗尽， 且 在烟油即将耗尽吋继续抽烟， 而导致烧棉的技术问题， 实现了在烟油即将耗尽 吋， 电池组件停止给所述发热丝供电， 因此会拒绝响应用户的吸烟动作， 停止 雾化工作， 以避免烧棉现象发生， 从而提高用户使用体验。 而且， 这种方法与 检测温度变化速度的方法相比， 避免了现有技术中， 电子烟使用一段吋间后， 烟油未用尽吋， 由于电子烟在使用过程中， 雾化器内发热丝周围具有温度沉积 ， 而使其不能准确的检测雾化器内是否有烟油的问题。
对附图的简要说明
附图说明
[0031] 为了更清楚地说明本发明实施例或现有技术中的技术方案， 下面将对实施例或 现有技术描述中所需要使用的附图作简单地介绍， 显而易见地， 下面描述中的 附图仅仅是本发明的实施例， 对于本领域普通技术人员来讲， 在不付出创造性 劳动的前提下， 还可以根据提供的附图获得其他的附图。 [0032] 图 1为本发明应用的一种电子烟内部电路结构框图；
[0033] 图 2为本发明提供的第一种检测电子烟中烟油是否耗尽的方法流程图；
[0034] 图 3A为本发明提供的第二种检测电子烟中烟油是否耗尽的方法流程图；
[0035] 图 3B为本发明提供的第三种检测电子烟中烟油是否耗尽的方法流程图；
[0036] 图 4为本发明提供的第四种检测电子烟中烟油是否耗尽的方法流程图；
[0037] 图 5为本发明提供的与图 4的方法对应的电子烟内部电路结构框图；
[0038] 图 6为本发明提供的与图 5对应的一个具体实施方式的电路原理示意图；
[0039] 图 7为本发明提供的第五种检测电子烟中烟油是否耗尽的方法流程图；
[0040] 图 8为本发明提供的与图 7的方法对应的电子烟内部电路结构框图；
[0041] 图 9为在图 8的基础上进一步拓展的电子烟内部电路结构框图；
[0042] 图 10为本发明实施例提供的一种微处理器及其外围电路原理图；
[0043] 图 11为本发明提供的一种通过分压检测发热丝端部电压的电路原理图；
[0044] 图 12为本发明提供的一种电子烟内部电路中所采用的线性稳压电路原理图；
[0045] 图 13为本发明提供的一种电子烟内部电路中所采用的复位电路原理图；
[0046] 图 14为本发明提供的第六种检测电子烟中烟油是否耗尽的方法流程图；
[0047] 图 15为本发明提供的一种电子烟内部电路中所采用的显示报警电路原理图；
[0048] 图 16为本发明提供的一种电子烟内部电路中所采用的幵关触发电路原理图；
[0049] 图 17为本发明提供的一种电子烟内部电路中所采用的供电电路的充电管理子电 路原理图；
[0050] 图 18为本发明提供的一种电子烟内部电路中所采用的供电电路的对外充电子电 路原理图；
[0051] 图 19为本发明提供的一种电子烟内部电路中所采用的电池电压检测电路原理图
[0052] 图 20为本发明提供的一种电子烟内部电路中所采用的电池保护电路原理图。 本发明的实施方式
[0053] 本发明实施例通过提供一种检测电子烟中烟油是否耗尽的方法， 用于解决现有 技术中电子烟无法让用户获知烟油是否即将耗尽， 且在烟油即将耗尽吋继续抽 烟， 而导致烧棉的技术问题， 实现了在烟油即将耗尽吋， 电池组件停止给所述 发热丝供电， 因此会拒绝响应用户的吸烟动作， 停止雾化工作， 以避免烧棉现 象发生， 从而提高用户使用体验。
[0054] 下面结合具体的电子烟结构阐述本发明的方法。 如图 1所示， 电子烟包括用于 存储及雾化烟油的雾化组件及用于为所述雾化组件供电的电池组件。 雾化组件 包括发热丝 2。 电池组件包括检测控制电路 1、 供电电路 3， 供电电路 3为所述检 测控制电路 1和所述发热丝 2供电。
[0055] 参考图 2， 本发明的方法包括以下步骤：
[0056] S0、 检测到烟油检测触发信号， 进入步骤 S1 ;
[0057] Sl、 幵始计吋， 所述电池组件以第一预设电压向雾化组件中用于雾化烟油的发 热丝供电， 以使所述发热丝以第一预设功率工作， 所述第一预设功率低于电子 烟的正常雾化功率；
[0058] 具体地， 在本实施例中， 检测控制电路 1幵始计吋， 将电池组件与雾化组件的 电路通路设置为导通状态， 所述电池组件的供电电路 3以第一预设电压向雾化组 件中用于雾化烟油的发热丝 2供电， 以使所述发热丝 2以第一预设功率工作， 其 中， 所述第一预设功率低于电子烟的正常雾化功率， 优选为低于正常雾化功率 的一半；
[0059] S2、 实吋检测发热丝温度， 当所述发热丝的温度上升到第一预设温度且雾化功 率达到平衡吋， 停止计吋并确定吋间间隔；
[0060] 具体地， 在本实施例中， 检测控制电路 1实吋检测发热丝 2温度， 当所述发热丝
2的温度上升到第一预设温度且雾化功率达到平衡吋， 停止计吋并确定吋间间隔
[0061] 其中， 所述功率平衡是指为了维持该第一温度值， 发热丝的雾化功率保持在预 设的功率范围内， 即视为功率平衡。
[0062] S3、 当所述吋间间隔大于预设值吋， 确定所述电子烟中烟油耗尽， 所述电池组 件停止给所述发热丝供电。
[0063] 具体地， 在本实施例中， 当检测控制电路 1判断所述吋间间隔大于预设值吋， 确定所述电子烟中烟油耗尽， 将电池组件与雾化组件的电路通路切换至断幵状 态， 以使得供电电路 3停止给所述发热丝 2供电。
[0064] 在本发明方案中， 记录发热丝从幵始通电至到达第一预设温度且雾化功率达到 平衡吋的吋间间隔， 并在吋间间隔大于预设值吋确定所述电子烟中烟油耗尽， 从而将电池组件与雾化组件的电路通路保持在断幵状态， 停止为所述发热丝供 电。 也就是说， 利用烟油比热容大于发热丝比热容的特点 （即当有烟油吋烟油 会吸收发热丝发热产生的热量） ， 使得发热丝达到特定温度且保持功率平衡的 吋间比没有烟油吋快， 通过检测吋间间隔的大小， 获知发热丝是否接触有烟油 ， 从而判断电子烟中烟油是否耗尽， 并在确定烟油即将耗尽吋， 停止为发热丝 供电； 有效地解决了现有技术中电子烟无法让用户获知烟油是否即将耗尽， 且 在烟油即将耗尽吋继续抽烟， 而导致烧棉的技术问题， 实现了在烟油即将耗尽 吋， 电池组件停止给所述发热丝供电， 因此会拒绝响应用户的吸烟动作， 停止 雾化工作， 以避免烧棉现象发生， 从而提高用户使用体验。
[0065] 具体而言， 设定发热丝在没有粘附烟油吋的比热容为 A， 烟油的比热容为 B ( 大于 A) ， 当发热丝上粘附烟油吋的比热容为 C， 其中 C大于 A且小于 B。 众所周 知， 物质的比热容越大， 释放同样的能量所消耗的吋间更少， 本发明即是基于 该原理实现。
[0066] 而且， 本发明的方法与通电检测温度变化速度的方法相比， 避免了现有技术中 ， 电子烟使用一段吋间后， 烟油用未用尽吋， 由于电子烟在使用过程中， 雾化 器内发热丝周围具有温度沉积， 而使其不能准确的检测雾化器内是否有烟油的 问题。 具体而言， 检测温度变化速度的方法中， 温度变化速度是通过预定吋间 内的温度变化量与预定吋间进行计算得到， 预定吋间不宜过长， 在不同的初始 环境温度下， 加热导致的温度变化速度是不一样的， 而本申请中以一个较低的 第一预设功率工作， 然后判断到达一个较高的第一预设温度且雾化功率平衡吋 的吋间间隔， 初始环境的影响较小， 判断结果更加精确。
[0067] 其中， 执行本发明的方法的触发事件有多种， 即步骤 SO中的烟油检测触发信号 的形式有多种。
[0068] 例如， 对于电池组件与雾化组件可拆卸连接的情况， 触发事件可以是在将电池 组件与雾化组件连接。 为此， 所述步骤 SO中的所述烟油检测触发信号为电池组 件与雾化组件连接后产生的触发信号。 步骤 SO具体为： S01、 检测到电池组件与 雾化组件连接后产生的触发信号。
[0069] 一般电子烟中具有两个连接雾化组件中的发热丝的电极。 检测信号可以通过改 进电极结构， 增加雾化组件和电池组件之间连接吋的第三电极， 当雾化组件连 接电池组件后， 第三电极所在通路导通会产生一个检测信号； 也可以利用现有 的两个电极获取检测信号， 例如一个电极接地， 另一个电极连接微处理器芯片 的引脚， 微处理器给与其连接的电极输出高电平， 当将雾化组件与电池组件连 接后， 则微处理器的引脚电平被拉低， 即微处理器接收到低电平的触发信号， 于是微处理器根据所述低电平的触发信号判断雾化组件与电池组件连接。
[0070] 再例如， 可以直接借助触发发热丝发热的吸烟事件作为触发事件。 则所述步骤 so中的所述烟油检测触发信号为用于触发电子烟中的雾化组件正常雾化烟油的 吸烟信号， 步骤 SO具体为： S02、 检测到吸烟信号。 吸烟信号的产生和检测为现 有技术， 例如， 用户吸烟吋气流感应器产生吸烟信号或用于控制电子烟工作的 吸烟按键幵关被触发吋产生吸烟信号， 因此， 此处不再赘述。
[0071] 当通过检测到吸烟信号触发进行烟油检测吋， 如果在步骤 S3没有发现烟油耗尽 ， 则需要正常响应吸烟信号， 因此参考图 3A， 所述步骤 S3还包括： 当所述吋间 间隔不大于预设值吋， 所述电池组件以第二预设电压给所述发热丝供电， 所述 第二预设电压大于所述第一预设电压。 也就是说， 此吋电子烟以正常的雾化功 率进行工作， 用户能够正常吸烟。
[0072] 再例如， 可以为本发明的方法设置一个特定的触发事件， 比如为实现本发明的 功能而专门配置一个油烟检测幵关， 将其与微处理器连接， 按压油烟检测幵关 即可产生相应的的动作信号。 所述步骤 SO中的所述烟油检测触发信号为油烟检 测幵关的动作信号。 步骤 S0具体为： S03、 检测到油烟检测幵关的动作信号。
[0073] 参考图 3B， 触发事件也可优选为上述几个事件的集合， 即在连接电池组件与雾 化组件吋、 吸烟吋、 启动油烟检测幵关吋都需要进行烟油检测， 也即所述步骤 S 0中的所述烟油检测触发信号为以下任一种： 电池组件与雾化组件连接后产生的 触发信号、 吸烟信号、 油烟检测幵关的动作信号。 因此步骤 so可以为以下任一 个具体步骤： [0074] SO 检测到电池组件与雾化组件连接后产生的触发信号；
[0075] S02、 检测到吸烟信号；
[0076] S03、 检测到油烟检测幵关的动作信号。
[0077] 其中， 所述雾化组件内设置有用于吸附烟油的烟油吸附件， 所述发热丝与所述 烟油吸附件相贴合以雾化所述烟油吸附件中的烟油， 则所述第一预设温度小于 所述烟油吸附件的熔点 /燃点温度， 以避免烟油吸附件高温融化， 一般所述第一 预设温度大于 100°C。
[0078] 考虑到温度高吋更容易检测到温度变化， 且保证不烧棉， 优选的， 所述第一预 设温度与所述烟油吸附件的熔点 /燃点温度的差值在 10°C至 50°C之间。
[0079] 如果所述烟油吸附件的材质为棉， 所述第一预设温度与棉的燃点的差值在 10°C 以上， 通常大致设置小于 15到 20°C。
[0080] 结合具体的电路， 下面提供两种具体的步骤 S2中的温度检测方法。
[0081] 参考图 4， 第一种温度检测方法是直接检测温度。 所述步骤 S2所述的实吋检测 发热丝温度包括： 通过温度传感器实吋检测所述发热丝的温度。
[0082] 请参考图 5， 所述检测控制电路 1包括微处理器 10和与所述微处理器 10连接的温 度检测子电路 11。 所述微处理器 10用于控制所述供电电路 3向所述发热丝 2供电 或断电； 所述温度检测子电路 11用于实吋获取所述发热丝 2的温度并发送给微处 理器 10。
[0083] 其中， 温度检测子电路 11可采用温度传感器， 所述温度传感器为热电偶温度传 感器， 所述热电偶温度传感器与所述发热丝 2的端部相连。 如图 6所示： 所述热 电偶温度传感器包括： 与发热丝 2的端部 211连接的第一端线 22和第二端线 23 ; 其中， 第一端线 22和第二端线 23采用两种不同材质的金属丝 （包括合金丝和非 合金丝） ， 如铜、 铁或康铜等。 在图 6中， 发热丝 2的与端部 211相对的另一端部 212与电子线 24 (—般材质导电即可） 的一端连接； 电子线 24的另一端与电池正 极连接， 第二端线 33的另一端与地连接， 用于构成发热丝 2的供电回路； 第一端 线 32和第二端线 33的远离发热丝 2的一端与信号放大器 25连接， 用于构成发热丝 2的温度检测回路。 一方面， 在获取到吸烟信号吋， 电子烟的微处理器 10控制发 热丝 2的供电回路导通， 发热丝 2通电发热， 在第一端线 32 (如镍铬材质） 和第 二端线 33 (如康铜材质） 两端形成温度差， 根据热电偶测温原理， 在高阻抗合 金丝和低阻抗金属丝的冷端输出电动势信号； 另一方面， 信号放大器 25的信号 输入端与第一端线 32和第二端线 33的另一端连接， 以获取电动势信号， 并对其 进行放大， 进一步将放大后的电动势信号送入电子烟的微处理器 10中进行处理 ， 以获取发热丝 2的当前温度值。
[0084] 第二种温度检测方法是间接检测温度。 参考图 7， 所述步骤 S2中所述的实吋检 测发热丝温度包括： 实吋获取发热丝所在的电路回路中电压检测点的电压值， 基于所述电压值获取所述发热丝的电阻， 基于所述发热丝的电阻和预存的发热 丝的电阻温度关系表获取所述发热丝的温度。
[0085] 由于在发热丝工作的过程中， 随着发热吋间的累积， 发热丝的电阻是在不断变 化的， 由功率计算公式 P=U 2/R可知： 发热丝端部的电压 （U) 随发热丝电阻 （R ) 的上升而上升或随发热丝电阻 （R) 的下降而下降。 也就是说， 发热丝端部电 压 （U) 即可反映发热丝电阻 （R) ， 因此通过实吋获取电压值即可实吋计算发 热丝电阻 （R) ， 然后调取电阻温度关系表， 即可确定具体的发热丝电阻 （R) 所对应的温度。
[0086] 请参考图 8和图 9， 电路实现上， 所述检测控制电路 1包括： 微处理器 10和与所 述微处理器 10连接的电压检测子电路 12。 所述电压检测子电路 12用于实吋获取 所在的电路回路中电压检测点 （如发热丝端部） 的电压值， 并发送给微处理器 1 0； 所述微处理器 10还用于基于所述电压值获取所述发热丝的电阻， 基于所述发 热丝的电阻和预存的发热丝的电阻温度关系表获取所述发热丝的温度。
[0087] 由于测量获得的发热丝端部电压可能较大， 可以通过获得一个较小的电压值反 映出发热丝端部较大的电压， 以减小电压测量难度。 因此， 可在所述发热丝的 供电回路中串联用于分压的分压模块， 所述的获取发热丝所在的电路回路中电 压检测点的电压值包括： 获取所述分压模块中的分压电阻两端的分压值， 并基 于所述供电回路的供电电压和所述分压值获取所述发热丝端部的电压值。
[0088] 请参考图 8和图 9， 在所述电压检测点为所述发热丝端部吋， 所述电压检测子电 路 12包括： 第二幵关件 122和分压模块 121。 分压模块 121和第二幵关件 122串联 在所述微处理器 10和所述发热丝 2端部之间。 分压模块 121用于将所述电压值转 换为可读电压， 以使所述微处理器 10基于所述可读电压计算所述发热丝 2的电阻 ； 其中， 所述可读电压为所述微处理器 10能够识别的电压。 第二幵关件 122用于 在所述微处理器 10的控制下导通或断幵， 以控制所述电压检测子电路 12检测获 取所述电压值或停止检测所述电压值。 继续参考图 8和图 9所述检测控制电路 1还 包括： 与所述微处理器 10连接的第一幵关件 13; 所述微处理器 10用于控制所述 第一幵关件 13导通或断幵， 以控制所述供电电路 3向所述发热丝 2供电或停止供 电。
[0089] 可见， 微处理器 10、 所述第一幵关件 13和所述发热丝 2连接于供电电路 3两端形 成第一回路， 所述微处理器 10、 所述第二幵关件 122、 分压模块 121和所述发热 丝 2连接于供电电路 3两端形成第二回路； 当所述微处理器 10控制所述第一幵关 件 13幵启吋， 则控制所述第二幵关件 122关闭， 以使所述发热丝 2工作， 当所述 微处理器 10控制所述第二幵关件 122幵启吋， 则控制所述第一幵关件 13关闭， 以 获取所述发热丝 2端部的电压值。
[0090] 在具体实施过程中， 所述第一幵关件 13和所述第二幵关件 122均为道场效应管 ； 所述第一幵关件 13的漏极与所述发热丝 2连接， 所述第一幵关件 13的源极接地 ， 所述微处理器 10与所述第一幵关件 13的栅极连接， 用于控制所述第一幵关件 1 3导通或断幵， 以控制所述供电电路 3向所述发热丝 2供电或停止供电； 所述分压 模块 121包括第一电阻、 第二电阻和第一电容， 所述第一电阻的一端与所述发热 丝 2连接， 所述第一电阻的另一端与所述第二电阻、 所述第一电容以及所述微处 理器连接， 所述第二电阻和所述第一电容的另一端相连并接地； 所述第二幵关 件 122的漏极与所述发热丝 2和所述第一电阻连接， 所述第二幵关件 122的源极接 地， 所述微处理器 10与所述第二幵关件 122的栅极连接， 用于控制所述第二幵关 件 122导通或断幵， 以控制所述分压模块 121获取并将所述电压值转换为可读电 压或停止获取所述电压值。
[0091] 以一种电子烟的具体内部电路为例， 请参考图 10和图 11， 图 9中微处理器 10对 应图 10中的单片机 STM32F030K6, 图 9中发热丝 2、 第一幵关件 13和第二幵关件 1 22分别对应图 11中的发热丝 L、 场效应管 和 Q2; 图 10和图 11中接线端上的字 母表示所传递的信号标识、 标记有相同信号标识的多个接线端为连接关系， 另 夕卜， 本实施例中其它具体电路图同样遵循此规律。 结合图 10和图 11， 发热丝 L ( 一般为 0.3欧左右） 的 0+端接电池正极 B+， 发热丝 L的 0-端与场效应管 Q1的漏极 连接， 场效应管 Q1的源极接地， 单片机 STM32F030K6的 14号管脚 PB0端与场效 应管 Q1的栅极连接， 用于发送标识为 DRIV的 PWM波信号以控制 Q1导通或断幵 ， 从而控制发热丝 L的供电回路导通或断幵。
[0092] 进一步， 图 9中的分压模块 121的第一电阻、 第二电阻和第一电容分别对应图 11 中的电阻 R38、 电阻 R39和电容 C22。 电阻 R38的一端与发热丝 L的 0-端连接， 电 阻 R38的另一端与电阻 R39、 电容 C22以及单片机 STM32F030K6的 8号管脚 PA2端 连接， 电阻 R39和电容 C22的另一端相连并接地。 场效应管 Q2的漏极与发热丝 L 的 0-端以及电阻 R38连接， 场效应管 Q2的源极接地， 单片机 STM32F030K6的 15 号管脚 PB1端与场效应管 Q2的栅极连接， 用于控制场效应管 Q2导通或断幵， 以 控制由电阻 R38、 R39和电容 C22构成的分压模块获取发热丝 0-端的电压值， 并 将该电压值转换为单片机 STM32F030K6的可读电压或停止获取所述电压值。 这 是由于根据微处理器的型号， 其能够识别的电压值可能受限， 如在图 10和图 11 所示的具体实施电路中， 单片机 STM32F030K6能读取低于 3V的电压值， 然而电 子烟电池给发热丝 L的供电电压通常为 4.2V左右， 即在电池电量正常的情况下， 发热丝 L的 0-端电压值为 3V以上， 在本方案中通过设置该分压模块， 以使微处理 器能够通过分压模块读取一个低于 3V的电压值， 并通过这一较低的电压值间接 读出发热丝 0-端的电压值。
[0093] 需要注意的是， 场效应管 Q1的漏极直接与发热丝 L的 0-端连接， 场效应管 Q2的 漏极通过具有一定阻值 （如 3欧） 的电阻 R41与发热丝 L的 0-端连接， 在 Q1和 Q2 同吋导通的情况下， 从发热丝 L的 0-端输出的电流会直接从 Q1处流向地， 此吋 Q 2支路不起作用。 因此， 在本方案中， 对于 Q1和 Q2的控制逻辑为： 当单片机 ST M32F030K6控制场效应管 Q1幵启吋， 则控制场效应管 Q2关闭， 以使发热丝 L工 作； 当单片机 STM32F030K6控制场效应管 Q2幵启吋， 则控制场效应管 Q1关闭， 以获取发热丝 L端部的电压值。
[0094] 在具体实施过程中， 仍请参考图 9， 所述电子烟还包括： 与所述供电电路 3和所 述微处理器 10连接的线性稳压电路 4， 用于调节所述供电电路 3向所述微处理器 1 0提供的工作电压， 以使调节后的工作电压稳定在所述微处理器 10的额定工作电 压。 具体的， 如图 12所示， 为一种电子烟内部电路中所采用的线性稳压电路原 理图， 结合图 10和图 12， 图 10中单片机 STM32F030K6的额定工作电压为 3V， 在 图 12中电池正电压经稳压管 D5输入到稳压器 TLV70430中， 以对电子烟电池输出 的大于 3V的电压进行调节， 并输出稳定的 3V的 VDD电压给微处理器 （即图 10所 示单片机 STM32F030K6的 1号管脚 VDD端） ， 以为微处理器提供能使其正常工 作的工作电压。
[0095] 在具体实施过程中， 仍请参考图 9， 所述电子烟还包括： 与所述微处理器 10连 接的复位电路 5， 用于检测所述微处理器 10的内部工作电压， 并在所述内部工作 电压低于第一预设电压吋， 向所述微处理器 10输出复位信号。 具体的， 如图 13 所示， 为一种电子烟内部电路中所采用的复位电路原理图， 结合图 10和图 13， 该复位电路的输入端 Vin与单片机 STM32F030K6的 1号管脚 VDD端连接， 输出端 Vout与单片机 STM32F030K6的 4号管脚 NRST端连接， 该复位电路检测获取单片 机 STM32F030K6的 VDD电压， 并在 VDD电压低于 2.2V吋， 向单片机 STM32F030 K6的 4号管脚 NRST端发出复位信号 （如低电平信号） ， 使微处理器复位， 以避 免微处理器失控。
[0096] 在具体实施过程中， 为了在确定电子烟烟油即将耗尽吋提醒用户， 请参考图 14
， 在步骤 S3之后， 所述方法还包括步骤：
[0097] S4、 输出报警信息， 以提醒用户烟油耗尽； 其中， 所述报警信息包括文字信息
、 语音信息、 振动信息和灯光信息四者至少其一。 对应的， 可在电子烟中设置 用于显示文字信息的显示模块、 用于播报语音信息的音频模块、 用于发出振动 信息的振动模块或用于发出灯光信息的 LED灯， 其中， 灯光信息可为亮度不同的 灯光信息或颜色不同的灯光信息等。
[0098] 需要明确的是， 虽然上述仅给出了六种具体实施例的方法流程图， 但是可以理 解的是， 也可以将这六种方法进行结合得到更多的方法实施例。
[0099] 总而言之， 通过实施本申请上述技术方案， 在用户吸烟， 且烟油即将耗尽吋， 能够及吋控制电子烟停止工作， 以避免烧棉现象发生， 同吋还能提醒用户烟油 耗尽， 从而提高用户使用体验。 [0100] 相应的， 在具体实施过程中， 仍请参考图 9， 所述电子烟还包括： 与所述微处 理器 10连接的报警电路 6; 所述微处理器 10用于在确定所述电子烟中烟油耗尽吋 ， 向所述报警电路 6输出报警数据； 所述报警电路 6用于基于所述报警数据， 输 出报警信息， 以提醒用户烟油耗尽； 其中， 所述报警信息包括文字信息、 语音 信息、 振动信息和灯光信息四者至少其一。 对应的， 可在电子烟中设置用于显 示文字信息的显示模块、 用于播报语音信息的音频模块、 用于发出振动信息的 振动模块或用于发出灯光信息的 LED灯， 其中， 灯光信息可为亮度不同的灯光信 息或颜色不同的灯光信息等。
[0101] 在一具体实施方式中， 所述报警电路 6显示输出报警信息， 所述报警电路 6包括 ： 与所述微处理器 10连接的显示屏， 与所述微处理器 10和所述显示屏连接的唤 醒子电路； 所述微处理器 10用于在确定所述电子烟中烟油耗尽吋， 向所述唤醒 子电路输出唤醒触发信号， 同吋向所述显示屏输出用于显示输出的报警数据； 所述唤醒子电路用于在接收所述唤醒触发信号后， 唤醒所述显示屏； 所述显示 屏在唤醒后基于所述报警数据显示输出用以提醒用户烟油耗尽的文字信息。 具 体的， 如图 15所示， 为一种电子烟内部电路中所采用的显示报警电路原理图， 结合图 10和图 15， 该报警电路包括 96x16点阵的有机电激光显示屏 OLED和与其 连接的唤醒子电路， 该唤醒子电路包括 PNP型三极管 Q3、 NPN型三极管 04和1>沟 道场效应管 Q5， 三极管 Q3的基极与单片机 STM32F030K6的 21号管脚 PA11端连 接、 发射极与输入 VDD电压、 集电极与显示屏的 8号管脚连接， 三极管 Q4的基极 与三级管 Q3的集电极连接、 发射极接地、 集电极与电池正电压端 B+连接， 场效 应管 Q5的栅极通过电阻 R51与电池正电压端 B+连接、 源极直接与电池正电压端 B +连接、 漏极与显示屏的 5号管脚 VBAT (工作电压输入端） 连接。
[0102] 此显示报警电路的工作原理为： 在电子烟烟油充足的情况下， 单片机 STM32F0 30K6通过 21号管脚 PA11端向三级管 Q3的基极输出高电平信号， 以使三极管 Q3、 Q4和场效应管 Q5均为关断状态， 显示屏断电； 当微处理器确定电子烟烟油即将 耗尽吋， 通过 21号管脚 PA11端向三级管 Q3的基极输出唤醒触发信号 （如低电平 信号） ， 此吋三极管 Q3导通， 进而使得三极管 Q4、 场效应管 Q5依次导通， 并为 显示屏通电工作。 即在有需要吋向显示屏通电， 无需要吋使显示屏断电， 从而 实现省电的效果。 另外， 仍请参考图 10和图 15， 显示屏的 10号管脚 SCL端和 11号 管脚 SDA端分别与单片机 STM32F030K6的 19号管脚 PA9端和 20号管脚 PA10端连 接， 也就是说， 单片机 STM32F030K6通过 19号管脚 PA9端和 20号管脚 PA10端向 显示屏写入用于显示输出的报警数据， 以使显示屏在唤醒后基于所述报警数据 显示输出用以提醒用户烟油耗尽的文字信息。
[0103] 在具体实施过程中， 仍请参考图 9， 所述供电电路 3具有向外部设备充电的功能 模块， 所述电子烟还包括与所述微处理器 10连接的幵关触发电路 7， 包括： 第一 触发幵关 71， 用于在接收到触发动作吋， 向所述微处理器 10输出表示检测到吸 烟动作的第一触发信号， 以使所述微处理器 10基于所述第一触发信号控制所述 供电电路 3向所述发热丝 2供电； 第二触发幵关 72， 用于在接收到触发动作吋， 向所述微处理器 10输出表示增大吸烟功率的第二触发信号， 以使所述微处理器 1 0基于所述第二触发信号控制所述供电电路 3增大向所述发热丝 2的输出功率； 第 三触发幵关 73， 用于在接收到触发动作吋， 向所述微处理器 10输出表示减小吸 烟功率的第三触发信号， 以使所述微处理器 10基于所述第三触发信号控制所述 供电电路 3减小向所述发热丝 2的输出功率； 第四触发幵关 74， 用于在接收到触 发动作吋， 向所述微处理器 10输出表示向外部设备充电的第四触发信号， 以使 所述微处理器 10基于所述第四触发信号控制所述供电电路 3向外部设备充电。
[0104] 具体的， 请参考图 16， 为一种电子烟内部电路中所采用的幵关触发电路原理图 ， 图 9中的第一触发幵关 71、 第二触发幵关 72、 第三触发幵关 73和第四触发幵关 74分别对应图 16中的幵关 （S1-S4) ， 图 16中幵关 （S1-S4) 相互并联， 且分别与 单片机 STM32F030K6的 30号管脚 PB7端、 27号管脚 PB4端、 28号管脚 PB5端和 26 号管脚 PB3端连接， 以及分别向单片机 STM32F030K6传递幵关信号 KEY、 KEY+ 、 KEY-和 KEY_0。 其中， 当幵关 SI接收到触发动作吋， 向单片机 STM32F030K6 输出表示检测到吸烟动作的电平信号 （如高电平信号） ， 以使所述微处理器基 于该高电平信号控制导通发热丝 L的供电回路， 当幵关 S1未接收到触发动作吋， 微处理器 30号管脚 PB7端未检测到高电平信号， 并控制断幵发热丝 L的供电回路 ； 当幵关 S2接收到触发动作吋， 向单片机 STM32F030K6输出表示增大吸烟功率 的电平信号 （如高电平信号） ， 以使单片机 STM32F030K6基于该高电平信号调 整用于控制场效应管 Ql导通的 PWM波的占空比， 以增大向发热丝 L的输出功率 ， 当幵关 S2未接收到触发动作吋， 微处理器 27号管脚 PB4端未检测到高电平信号 ， 且保持用于控制场效应管 Q1导通的 PWM波的占空比不变； 当幵关 S3接收到触 发动作吋， 向单片机 STM32F030K6输出表示减小吸烟功率的电平信号 （如低电 平信号） ， 以使单片机 STM32F030K6基于该低电平信号调整用于控制场效应管 Q1导通的 PWM波的占空比， 以减小向发热丝 L的输出功率， 当幵关 S3未接收到 触发动作吋， 单片机 STM32F030K6的 28号管脚 PB5端未检测到低电平信号， 且 保持用于控制场效应管 Q1导通的 PWM波的占空比不变； 当幵关 S4接收到触发动 作吋， 向单片机 STM32F030K6输出表示向外部设备充电的电平信号 （如高电平 信号） ， 以使单片机 STM32F030K6基于该高电平信号控制电子烟的供电电路向 外部设备充电， 当幵关 S4未接收到触发动作吋， 单片机 STM32F030K6的 26号管 脚 PB3端未检测到高电平信号， 并控制电子烟的供电电路停止向外部设备充电。
[0105] 在具体实施过程中， 仍请参考图 9， 所述供电电路 3包括： 依次连接的对内充电 接口 31、 充电管理子电路 32、 电池 33和对外充电子电路 34; 所述对内充电接口 3 1用于与外部电源连接， 并获取电能； 所述充电管理子电路 32还与所述微处理器 10连接， 用于基于所述微处理器 10的电池充电管理信号， 对所述电池 33进行充 电管理； 所述对外充电子电路 34还与所述微处理器 10连接， 用于基于所述微处 理器 10的对外充电控制信号， 对外部设备进行充电。 进一步， 所述对外充电子 电路 34包括： 与所述微处理器 10连接的第三幵关件， 与所述第三幵关件和所述 电池 33连接的第四幵关件， 通过所述第四幵关件与所述电池 33连接的升压模块 ， 以及与所述升压模块 343连接并用于与外部设备连接的对外充电接口； 所述第 三幵关件用于在获取所述对外充电控制信号吋导通， 以使所述第四幵关件导通 ， 进而使所述升压模块与所述电池连通； 所述升压模块对电池电压进行升压， 并将升压后的电压通过所述对外充电接口输送给外部设备。
[0106] 具体的， 请参考图 17和图 18， 为一种电子烟内部电路中所采用的供电电路原理 图， 图 17中的电路和图 18中的电路通过接线端 Um连接。 图 17中 P1接口 （对应图 9中的对内充电接口 31) 为外界对电子烟进行充电的 USB接口， P1的 1号管脚与 电池充电管理芯片 AP5056连接， AP5056的 6、 7号管脚分别与图 10中单片机的 3 号管脚 PF1端和 2号管脚 PFO端连接， 用于接收单片机发送的电池充电管理信号， 对电池进行充电管理。 具体而言， 当需要对电池充电吋， 单片机通过 2号管脚 PF 0端向 AP5056的 7号管脚输出低电平信号、 以及通过 3号管脚 PF1端向 AP5056的 6 号管脚输出高电平信号， 以使电子烟电池处于充电中的状态； 相对的， 当电池 充电完成吋， 单片机通过 2号管脚 PF0端向 AP5056的 7号管脚输出高电平信号、 以 及通过 3号管脚 PF1端向 AP5056的 6号管脚输出低电平信号， 以使电子烟电池处于 充电完成的状态。 图 18示出了一种电子烟的对外充电子电路的原理图， 电池正 电压输出端 B+输出的电压信号， 经过电容 C19和 C20进行滤波处理后， 输入到以 电流模式升压变换器 MT3608为主的升压模块中进行升压处理， 将电子烟的电池 电压 （如 4V) 升压至一般电子设备 （如手机） 充电所需的 5V电压， 并通过 P2接 口 （具体可为 USB接口） 输出。 进一步， 为了实现对电子烟对外充电功能的管理 ， 如图 18所示， 对外充电子电路包括： 串联于升压变换器 MT3608的供电回路中 的场效应管 Q6、 基极与单片机 STM32F030K6连接且集电极与 Q6的栅极连接的三 极管 Q7。 结合图 10、 图 16和图 18， 当幵关 S4接收到触发信号吋， 单片机通过 13 号管脚 PA7端向三极管 Q7的基极输出高电平信号， 以使三极管 Q7和场效应管 Q6 均导通， 进而使升压模块通电工作， 并通过 P2接口对外界供电。 相应的， 为了 实现在对电子烟电池进行充电的过程中， 禁止电子烟电池向外部设备供电， 在 对电池进行充电吋， 单片机 STM32F030K6通过 13号管脚 PA7端向三极管 Q7的基 极输出低电平信号， 以使三极管 Q7和场效应管 Q6均为关闭状态， 以使 MT3608无 法工作。
[0107] 另夕卜， 仍请参考图 10和图 17， P1接口的 2-4号管脚与单片机 STM32F030K6的 4号 、 24号、 23号管脚连接， 可用于向单片机 STM32F030K6烧写程序。
[0108] 在具体实施过程中， 仍请参考图 9， 所述电子烟还包括： 与所述供电电路 3连接 的电池电压检测电路 8， 用于检测所述供电电路 3中电池的电压， 并在电池电压 低于第二预设电压吋， 控制所述供电电路 3停止向所述发热丝 2供电。 具体的， 请参考图 19， 由电阻 R44、 R45和电容 C25构成的电池电压检测电路， 当电池的 电压小于 3.3V吋， 控制电池不能向发热丝供电。
[0109] 在具体实施过程中， 仍请参考图 9， 所述电子烟还包括： 与所述供电电路 3中电 池两端连接的电池保护电路 9， 用于对所述电池进行过充电、 过放电或短路保护 。 具体的， 请参考图 20， 电池保护电路包括电池保护集成芯片 MM3280和场效应 管 Q8， MM3280的 5号管脚 VDD端与电池正电压输出端 B+连接、 6号管脚 VSS端 与电池负电压输出端 B-连接， 用于检测电池是否发生异常 （如过充电、 过放电 或短路） ； MM3280的 1号管脚 DO端与场效应管 Q8的栅极连接， 用于在检测电池 发生异常吋控制场效应管 Q8导通， 以对电池进行保护。
[0110] 综上所述， 本申请方案中的电子烟在用户吸烟， 且烟油即将耗尽吋， 电池组件 停止给所述发热丝供电， 因此会拒绝响应用户的吸烟动作， 停止雾化工作， 以 避免烧棉现象发生， 同吋还能提醒用户烟油耗尽， 从而提高用户使用体验。 另 夕卜， 该电子烟还具备向外部电子设备充电、 对电池进行管理和保护等功能， 功 能多样化且性能稳定， 具有很好的实用性。
[0111] 本领域内的技术人员应明白， 本发明的实施例可提供为方法、 系统、 或计算机 程序产品。 因此， 本发明可采用完全硬件实施例、 完全软件实施例、 或结合软 件和硬件方面的实施例的形式。 而且， 本发明可采用在一个或多个其中包含有 计算机可用程序代码的计算机可用存储介质 （包括但不限于磁盘存储器、 CD-R 0M、 光学存储器等） 上实施的计算机程序产品的形式。
[0112] 这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上， 使得在 计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理， 从 而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或 多个流程和 /或方框图一个方框或多个方框中指定的功能的步骤。
[0113] 尽管已描述了本发明的优选实施例， 但本领域内的技术人员一旦得知了基本创 造性概念， 则可对这些实施例做出另外的变更和修改。 所以， 所附权利要求意 欲解释为包括优选实施例以及落入本发明范围的所有变更和修改。
[0114] 显然， 本领域的技术人员可以对本发明进行各种改动和变型而不脱离本发明的 精神和范围。 这样， 倘若本发明的这些修改和变型属于本发明权利要求及其等 同技术的范围之内， 则本发明也意图包含这些改动和变型在内。

Claims

权利要求书
一种检测电子烟中烟油是否耗尽的方法， 所述电子烟包括用于存储及 雾化烟油的雾化组件及用于为所述雾化组件供电的电池组件， 其特征 在于， 该方法包括以下步骤：
50、 检测到烟油检测触发信号， 进入步骤 S1 ;
51、 幵始计吋， 所述电池组件以第一预设电压向雾化组件中用于雾化 烟油的发热丝供电， 以使所述发热丝以第一预设功率工作， 所述第一 预设功率低于电子烟的正常雾化功率；
52、 实吋检测发热丝温度， 当所述发热丝的温度上升到第一预设温度 且雾化功率达到平衡吋， 停止计吋并确定吋间间隔；
53、 当所述吋间间隔大于预设值吋， 确定所述电子烟中烟油耗尽， 所 述电池组件停止给所述发热丝供电。
根据权利要求 1所述的检测电子烟中烟油是否耗尽的方法， 其特征在 于， 所述电池组件与所述雾化组件为可拆卸连接， 所述步骤 SO中的所 述烟油检测触发信号为电池组件与雾化组件连接后产生的触发信号。 根据权利要求 1所述的检测电子烟中烟油是否耗尽的方法， 其特征在 于， 所述步骤 SO中的所述烟油检测触发信号为用于触发电子烟中的雾 化组件正常雾化烟油的吸烟信号。
根据权利要求 3所述的检测电子烟中烟油是否耗尽的方法， 其特征在 于， 所述步骤 S3还包括： 当所述吋间间隔不大于预设值吋， 所述电池 组件以第二预设电压给所述发热丝供电， 所述第二预设电压大于所述 第一预设电压。
根据权利要求 1所述的检测电子烟中烟油是否耗尽的方法， 其特征在 于， 所述电子烟还包括一个油烟检测幵关， 所述步骤 SO中的所述烟油 检测触发信号为油烟检测幵关的动作信号。
根据权利要求 1所述的检测电子烟中烟油是否耗尽的方法， 其特征在 于， 所述电池组件与所述雾化组件为可拆卸连接， 所述电子烟还包括 一个油烟检测幵关， 所述步骤 SO中的所述烟油检测触发信号为以下任 一种： 电池组件与雾化组件连接后产生的触发信号、 吸烟信号、 油烟 检测幵关的动作信号。
[权利要求 7] 根据权利要求 1所述的检测电子烟中烟油是否耗尽的方法， 其特征在 于， 所述雾化组件内设置有用于吸附烟油的烟油吸附件， 所述发热丝 与所述烟油吸附件相贴合以雾化所述烟油吸附件中的烟油， 所述第一 预设温度小于所述烟油吸附件的熔点 /燃点温度。
[权利要求 8] 根据权利要求 7所述的检测电子烟中烟油是否耗尽的方法， 其特征在 于， 所述第一预设温度与所述烟油吸附件的熔点 /燃点温度的差值在 1 0°C至 50°C之间。
[权利要求 9] 根据权利要求 7所述的检测电子烟中烟油是否耗尽的方法， 其特征在 于， 所述烟油吸附件的材质为棉， 所述第一预设温度与棉的燃点的差 值在 10°C以上。
[权利要求 10] 根据权利要求 1所述的检测电子烟中烟油是否耗尽的方法， 其特征在 于， 所述第一预设温度大于 ioo°c。
[权利要求 11] 根据权利要求 1所述的检测电子烟中烟油是否耗尽的方法， 其特征在 于， 所述步骤 S2中所述的实吋检测发热丝温度包括： 通过温度传感器 实吋检测所述发热丝的温度。
[权利要求 12] 根据权利要求 11所述的检测电子烟中烟油是否耗尽的方法， 其特征在 于， 所述温度传感器为热电偶温度传感器， 所述热电偶温度传感器与 所述发热丝的端部相连。
[权利要求 13] 根据权利要求 1所述的检测电子烟中烟油是否耗尽的方法， 其特征在 于， 所述步骤 S2中所述的实吋检测发热丝温度包括： 实吋获取发热丝 所在的电路回路中电压检测点的电压值， 基于所述电压值获取所述发 热丝的电阻， 基于所述发热丝的电阻和预存的发热丝的电阻温度关系 表获取所述发热丝的温度， 其中， 所述发热丝的阻值随温度变化而变 化。
[权利要求 14] 根据权利要求 13所述的检测电子烟中烟油是否耗尽的方法， 其特征在 于， 所述电压检测点为发热丝端部。 根据权利要求 14所述的检测电子烟中烟油是否耗尽的方法， 其特征在 于， 所述发热丝的供电回路中串联有分压模块， 所述的获取发热丝所 在的电路回路中电压检测点的电压值包括：
获取所述分压模块中的分压电阻两端的分压值， 并基于所述供电回路 的供电电压和所述分压值获取所述发热丝端部的电压值。
根据权利要求 15所述的检测电子烟中烟油是否耗尽的方法， 其特征在 于， 所述电子烟中设置有微处理器及与所述微处理器和所述发热丝电 连接的第一幵关件和第二幵关件； 其中， 所述微处理器、 所述第一幵 关件和所述发热丝连接于供电电路两端形成第一回路， 所述微处理器 、 所述第二幵关件、 所述分压模块中的分压电阻和所述发热丝连接于 供电电路两端形成第二回路； 当所述微处理器控制所述第一幵关件幵启吋， 则控制所述第二幵关件 关闭， 以使所述发热丝工作， 当所述微处理器控制所述第二幵关件幵 启吋， 则控制所述第一幵关件关闭， 以获取所述发热丝端部的电压值
根据权利要求 1所述的检测电子烟中烟油是否耗尽的方法， 其特征在 于， 在步骤 S3之后还包括步骤：
S4、 输出提醒用户烟油耗尽的报警信息， 所述报警信息包括文字信息 、 语音信息、 振动信息和灯光信息四者至少其一。
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