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WO2017024477A1 - Procédé permettant de détecter si l'huile de cigarette dans une cigarette électronique est épuisée, et cigarette électronique - Google Patents

Procédé permettant de détecter si l'huile de cigarette dans une cigarette électronique est épuisée, et cigarette électronique Download PDF

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Publication number
WO2017024477A1
WO2017024477A1 PCT/CN2015/086547 CN2015086547W WO2017024477A1 WO 2017024477 A1 WO2017024477 A1 WO 2017024477A1 CN 2015086547 W CN2015086547 W CN 2015086547W WO 2017024477 A1 WO2017024477 A1 WO 2017024477A1
Authority
WO
WIPO (PCT)
Prior art keywords
heating wire
electronic cigarette
microprocessor
circuit
voltage
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CN2015/086547
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English (en)
Chinese (zh)
Inventor
刘秋明
向智勇
韦志林
丁建军
牛建华
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kimree Technology Co Ltd
Original Assignee
Kimree Technology Co Ltd
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 Kimree Technology Co Ltd filed Critical Kimree Technology Co Ltd
Priority to CN201580000257.XA priority Critical patent/CN107072312B/zh
Priority to PCT/CN2015/086547 priority patent/WO2017024477A1/fr
Publication of WO2017024477A1 publication Critical patent/WO2017024477A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • A24F40/10—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 and an electronic cigarette.
  • 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 Whether the smoke oil in the smoke is exhausted and an electronic cigarette realizes that the user uses the electronic cigarette, and the smoke oil is about to be exhausted, and the electronic cigarette is stopped to prevent the burning of the cotton, thereby improving the user's use.
  • 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 Whether the smoke oil in the smoke is exhausted and an electronic cigarette realizes that the user uses the electronic cigarette, and the smoke oil is about to be exhausted, and the electronic cigarette is stopped to prevent the burning of the cotton, thereby improving the user's use.
  • the electronic cigarette can not let the user know whether the smoke oil is about to be exhausted, and the smoking oil
  • the present invention provides a method for detecting whether smoke oil in an electronic cigarette is exhausted, including the following steps [0007] Sl, after detecting the smoking signal, supplying power to the heating wire for atomizing the smoke oil in the electronic cigarette, so that the heating wire works;
  • S2 acquiring a temperature change speed of the heating wire, and determining that the smoke oil is exhausted in the electronic cigarette after the change speed is greater than a preset value, and stopping power supply to the heating wire.
  • the present invention provides an electronic cigarette, comprising: a detection control circuit, a heating wire for atomizing the smoke oil, and a power supply circuit for supplying the detection control circuit and the heating wire;
  • the detection control circuit is configured to control the power supply circuit to supply power to the heating wire after detecting a smoking signal, to operate the heating wire, and obtain a temperature change speed of the heating wire, and The change speed is greater than a preset value ⁇ , determining that the smoke oil in the electronic cigarette is exhausted, and stopping power supply to the heating wire.
  • the heating wire for atomizing the smoke oil in the electronic cigarette is supplied with power to operate the heating wire; Describe the temperature change rate of the heating wire, and after the change speed is greater than a preset value, determine that the smoke oil is exhausted in the electronic cigarette, and stop supplying power to 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 temperature rise of the heating wire in the unit turn is faster than that without the smoke oil.
  • the invention solves the technical problem that the electronic cigarette in the prior art can not let the user know whether the smoke oil is about to be exhausted, and continues to smoke after the smoke oil is exhausted, thereby causing the technical problem of burning the cotton, realizing the use of the electronic cigarette by the user, and the smoke oil is about to be After exhausting ⁇ , and ⁇ control the electronic cigarette to stop working, to avoid the occurrence of burning, thereby improving the user experience.
  • FIG. 1 is a flow chart of a method for detecting whether smoke oil in an electronic cigarette is exhausted according to an embodiment of the present invention
  • FIG. 2 is a second method for detecting smoke oil in an electronic cigarette according to an embodiment of the present invention
  • FIG. 3 is a circuit structure for detecting the temperature of a heating wire by a thermocouple sensor according to an embodiment of the present invention
  • FIG. 4 is a flowchart of a third method for detecting whether smoke oil is exhausted in an electronic cigarette according to an embodiment of the present invention.
  • FIG. 5 is a diagram of detecting a voltage at an end of a heating wire according to an embodiment of the present invention.
  • FIG. 6 is a flowchart of a fourth method for detecting whether smoke oil is exhausted in an electronic cigarette according to an embodiment of the present invention.
  • FIG. 7 is a block diagram of an internal circuit structure of an electronic cigarette according to an embodiment of the present invention.
  • FIG. 8A is a block diagram showing an internal circuit structure of an electronic cigarette based on a temperature detecting sub-circuit for detecting a temperature change of a heating wire according to an embodiment of the present invention
  • 8B is a block diagram showing an internal circuit structure of an electronic cigarette based on a voltage detecting sub-circuit for detecting a temperature change of a heating wire according to an embodiment of the present invention
  • FIG. 9 is a schematic diagram of a microprocessor and its peripheral circuits according to an embodiment of the present invention.
  • FIG. 10 is a circuit schematic diagram of detecting a voltage of an end portion of a heating wire by a partial pressure according to an embodiment of the present invention
  • FIG. 11 is a schematic diagram of an internal circuit of an electronic cigarette according to an embodiment of the present invention. Schematic diagram of linear regulator circuit;
  • FIG. 12 is a schematic diagram of a reset circuit used in an internal circuit of an electronic cigarette according to an embodiment of the present invention.
  • FIG. 13 is a display diagram of an internal circuit of an electronic cigarette according to an embodiment of the present invention; Alarm circuit schematic diagram;
  • FIG. 14 is a schematic diagram of a trigger circuit used in an internal circuit of an electronic cigarette according to an embodiment of the present invention.
  • 15A 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 an embodiment of the present invention
  • FIG. 15B 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 an embodiment of the present invention
  • 16 is a schematic diagram of a battery voltage detecting circuit used in an internal circuit of an electronic cigarette according to an embodiment of the present invention.
  • FIG. 17 is a schematic diagram of a battery protection circuit used in an internal circuit of an electronic cigarette according to an embodiment of the present invention. Embodiments of the 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 technical problem of burning cotton has realized that the user can use the electronic cigarette, and the smoke oil is about to run out, and the electronic cigarette is controlled to stop working to avoid the phenomenon of burning cotton, thereby improving the user experience.
  • Embodiments of the present invention provide a method for detecting whether smoke oil in an electronic cigarette is exhausted, including the steps of: Sl, supplying a heating signal for atomizing the smoke oil in the electronic cigarette after detecting a smoking signal; In order to operate the heating wire; S2, obtaining a temperature change speed of the heating wire, and determining that the smoke oil is exhausted in the electronic cigarette when the changing speed is greater than a preset value, and stopping power supply to the heating wire .
  • the specific heat capacity of the smoke oil is greater than the heat capacity of the heating wire (ie, when the smoke oil and the smoke oil absorb the heat generated by the heating wire), the heating wire is in the unit cell.
  • the temperature rise rate is slower than that of no smoke oil.
  • an embodiment of the present invention provides a method for detecting whether smoke oil in an electronic cigarette is exhausted, including the following steps:
  • the specific heat capacity of the heating wire is not adhered to the smoky oil ⁇ , the specific heat capacity of the smoky oil is B (greater than A), and the specific heat capacity of the smoulder attached to the heating wire is C, wherein C It is greater than A and less than B;
  • the unit mass object changes the internal energy absorbed or released by the unit temperature ,, that is, the specific heat capacity of the substance can directly reflect the temperature change rate.
  • the current specific heat capacity of the heating wire can be known by the temperature change rate, that is, whether the heating wire adheres to the smoke oil.
  • the current specific heat capacity of the heating wire is similar to the specific heat capacity of the heating wire without adhering the smoke oil, and the temperature change speed of the heating wire is greater than a preset value, that is, It is indicated that the current specific heat capacity of the heating wire is similar to the heat capacity (A) of the heating wire itself, which indicates that the amount of smoke oil adhered to the heating wire is not adhered or the amount of smoke oil adhered to it is small, and the smoke oil in the electronic cigarette can be determined to be exhausted and stopped. Powering the heating wire.
  • the temperature values of the initial engraving and ending engraving of a certain preset inter-segment segment may be obtained, and the heating filaments may be calculated by using the two temperature values and the preset inter-turn
  • the electronic cigarette is provided with an oil guiding member that is in contact with the heating wire and supplies oil to the heating wire, and the heating wire atomizes the oil on the oil guiding member to form Smoke
  • the step S2 specifically includes sub-steps
  • the temperature of the oil guiding member cracking crucible is the maximum temperature that the oil guiding member can withstand, and in specific applications, the oil guiding member can be heated to the beginning of discoloration.
  • the temperature of the crucible is set to an upper limit of the second temperature value, and the temperature of the initial discoloration crucible may be different depending on the material of the oil guiding member, and is not specifically limited herein.
  • the temperature of the heating wire may be detected by a temperature sensor, the temperature sensing The device is a thermocouple temperature sensor, and the thermocouple temperature sensor is connected to an end of the heating wire.
  • the thermocouple temperature sensor includes: a first end line 3 2 and a second end line 33 connected to an end portion 311 of the heating wire 31; wherein the first end line 32 and the second end line 33 adopt two Different kinds of wire (including alloy wire and non-alloy wire), such as copper, iron or constantan.
  • wire including alloy wire and non-alloy wire
  • the other end portion 312 of the heating wire 31 opposite to the end portion 31 1 is connected to one end of the electron beam 34 (which is a general material wire); the other end of the electron beam 34 is connected to the positive electrode of the battery, and the second end line
  • the other end of the 33 is connected to the ground for forming a power supply circuit of the heating wire 31; the end of the first end wire 32 and the second end wire 33 remote from the heating wire 31 is connected to the signal amplifier 35 for constituting the temperature detection of the heating wire 31. Loop.
  • the microprocessor 36 of the electronic cigarette controls the power supply circuit of the heating wire 31 to be turned on, and the heating wire 31 is energized and heated, at the first end line 32 (such as nickel-chromium material) and the second end line 33. (such as constantan material) The temperature difference is formed at both ends.
  • the electromotive force signal is outputted at the cold end of the high-resistance alloy wire and the low-resistance wire; on the other hand, the signal input end of the signal amplifier 35 is first The cold end of the end line 32 and the second end line 33 are connected to obtain the electromotive force signal, and is amplified, and further the amplified electromotive force signal is sent to the microprocessor 36 of the electronic cigarette for processing to obtain the heating wire.
  • the temperature change rate of the heating wire can be obtained by detecting the magnitude of the resistance change of the heating wire, that is, the step S2 is specifically: obtaining the voltage value of the voltage detecting point in the circuit loop where the heating wire is located. Calculating, according to the voltage value, a magnitude of resistance change of the heating wire in a preset turn, and acquiring a temperature change speed of the heating wire based on the change amplitude, and after the change speed is greater than a preset value, Determining the exhaustion of the smoke oil in the electronic cigarette and stopping supplying power to the heating wire; wherein the resistance of the heating wire changes with temperature.
  • the voltage detection point may be the end of the heating wire.
  • the step S2 specifically includes sub-steps:
  • S24 acquiring a first voltage value of the end of the heating wire in a first engraving, and acquiring a second voltage value of an end of the heating wire in a second engraving, wherein the second engraving and The first engraving is different from the preset time;
  • S25 Calculate, according to the first voltage value and the second voltage value, a magnitude of resistance change of the resistance of the heating wire within the predetermined turn, and acquire the heating wire based on the variation range.
  • the temperature change rate, and after the change speed is greater than a preset value, determining that the smoke oil is exhausted in the electronic cigarette to stop supplying power to the heating wire.
  • the voltage value of the engraved (ie, the second engraving), and based on the two voltage values (ie, the first voltage value and the second voltage value), the resistance of the heating wire in the first engraving (Rtl) and the second engraving are determined.
  • a resistance (Rt2) further determining a resistance change of the heating wire between the predetermined turns (0: IRtl-Rt2l/t, further, knowing a temperature change speed of the heating wire by IRtl-Rt2l/t, and The temperature change speed is greater than the preset value ⁇ , indicating that the current specific heat capacity of the heating wire is close to the heat capacity of the heating wire itself, thereby indicating that there is no sticking of smoke oil or a small amount of adhered smoke oil on the heating wire, and the electronic cigarette can be determined.
  • the smog is exhausted, and the heating of the heating wire is stopped.
  • the predetermined value is not specifically limited herein depending on the specific heat capacity of the heating wire.
  • the voltage of the end of the heating wire obtained by the measurement may be large, in order to obtain a smaller voltage value, and reflect the larger voltage at the end of the hot wire by the smaller voltage value.
  • a voltage dividing resistor 51 (for voltage division) may be connected in series in the power supply circuit of the heating wire 50, and the end of the heating wire 50 is obtained in the step S2.
  • the voltage value is specifically obtained by: obtaining a voltage dividing value across the voltage dividing resistor 51, and acquiring a voltage value of an end portion of the heating wire 50 based on a power supply voltage of the power supply circuit and the partial voltage value. Specifically, referring to FIG.
  • the electronic cigarette is provided with a microprocessor 52 and a first switch member 53 and a second switch member 54 electrically connected to the microprocessor 52 and the heating wire 50.
  • the microprocessor 52, the first switch member 53 and the heating wire 50 are connected to the two ends of the electronic cigarette battery to form a first loop
  • the voltage dividing resistor 51 and the heating wire 50 are connected to the two ends of the electronic cigarette battery to form a second loop; when the microprocessor 52 controls the first closing member 53 to start, control the second The closing member 54 is closed to operate the heating wire 50.
  • the microprocessor 52 controls the second closing member 54 to open, the first closing member 53 is controlled to be closed to obtain The voltage value at the end of the heating wire 50 is described.
  • step S2 in order to remind the user when it is determined that the electronic cigarette smoke is about to be exhausted, please refer to FIG. 6.
  • step S2 the method further includes the steps of:
  • S3. Output alarm information to remind the user that the smoke oil is exhausted; wherein the alarm information includes at least one of text information, voice information, vibration information, and light 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 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 present invention further provides an electronic cigarette, comprising: a detection control circuit 1, a heating wire 2 for atomizing smoke oil, and a detection control circuit 1 and The heating circuit 2 is powered by the power supply circuit 3;
  • the detection control circuit 1 is configured to control the power supply circuit 3 to supply power to the heating wire 2 after detecting a smoking signal, to operate the heating wire 2, and obtain a temperature change of the heating wire The speed, and after the change speed is greater than a preset value, determines that the smoke in the electronic cigarette is exhausted, and stops supplying power to the heating wire.
  • the detection control circuit 1 includes: a microprocessor 10 and a temperature detecting sub-circuit 11 connected to the microprocessor 10; After detecting the smoking signal, controlling the power supply circuit 3 to supply power to the heating wire 2 to operate the heating wire 2; the temperature detecting sub-circuit 11 is configured to obtain the operation after the heating wire 2 is operated The temperature of the heating wire 2; The processor 10 is further configured to calculate a temperature change speed of the heating wire 2 based on the temperature, and determine that the smoke oil is exhausted in the electronic cigarette after the change speed is greater than a preset value, and control the power supply circuit 3 Stop supplying power to the heating wire 2.
  • the temperature detecting sub-circuit 11 can detect the temperature of the heating wire 2 by using a temperature sensor, the temperature sensor is a thermocouple temperature sensor, and the thermocouple temperature sensor is connected to the end of the heating wire, as shown in FIG. Show, here is no longer a detailed description.
  • the detection control circuit 1 includes: a microprocessor 10 and a voltage detection sub-circuit 12 connected to the microprocessor 10;
  • the microprocessor 10 is configured to control the power supply circuit 3 to supply power to the heating wire 2 to detect the smoking signal, so that the heating wire 2 operates;
  • the voltage detecting sub-circuit 12 is configured to obtain a voltage value of a voltage detecting point (such as a heating wire end) in a circuit loop where the heating wire 2 is located after the heating wire 2 is operated;
  • the microprocessor 10 is further configured to calculate a resistance change amplitude of the heating wire 2 in a preset turn based on the voltage value, and acquire a temperature change speed of the heating wire 2 based on the change amplitude. And determining that the smoke oil is exhausted in the electronic cigarette after the change speed is greater than a preset value, and controlling the power supply circuit 3 to stop supplying power to the heating wire 2; wherein the resistance of the heating wire 2 is related to temperature The change has changed.
  • the voltage detecting sub-circuit 12 includes:
  • a voltage dividing module 121 connected to the microprocessor 10 and the end of the heating wire 2 for converting the voltage value into a readable voltage, so that the microprocessor 10 is based on the Calculating a magnitude of a resistance change of the heating wire 2 in a predetermined turn, and obtaining a temperature change speed of the heating wire 2 based on the change width, and determining that the change speed is greater than a preset value
  • the smoke oil is exhausted in the electronic cigarette to stop supplying power to the heating wire 2; wherein the readable voltage is a voltage that the microprocessor 10 can recognize.
  • the detection control circuit 1 further includes: a first switch 13 connected to the microprocessor 10; the microprocessor 10 is configured to control the first switch The closing member 13 is turned on or off to control the power supply circuit 3 to supply power to the heating wire 2 or to stop supplying power;
  • the voltage detecting sub-circuit 12 further includes: a second switch member 122 connected to the microprocessor 10; the microprocessor 10 is configured to control the second switch member 122 to be turned on or off. That is, the voltage detecting sub-circuit 12 is controlled to detect the voltage value or stop detecting the voltage value.
  • 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 closing member 122 for controlling
  • FIG. 9 and FIG. 10 Taking a specific internal circuit of an electronic cigarette as an example, please refer to FIG. 9 and FIG. 10.
  • the microprocessor 10 in FIG. 8B corresponds to the single chip STM32F030K6 in FIG. 9, the heating wire 2 in FIG. 8B, and the first switching element. 13 and the second shutoff member 122 correspond to the heating wire L, the field effect transistor and the Q2 in FIG. 10, respectively; the letters on the terminals in FIGS. 9 and 10 indicate the transmitted signal identification, and the plurality of signals marked with the same signal.
  • the terminal is in a connection relationship.
  • other specific circuit diagrams in this embodiment also follow this rule. Referring to Fig. 9 and Fig.
  • the heating wire L (generally about 0.3 ohms) 0+ is connected to the battery positive electrode B+, and the 0-terminal of the heating wire L is connected to the drain of the field effect transistor Q1, and the source of the field effect transistor Q1 Grounding, 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. 8B respectively correspond to the resistor R38, the resistor R39, and the capacitor C22 in FIG.
  • One end of the resistor R38 is connected to the 0-end of the heating wire L
  • the other end of the resistor R38 is connected to the resistor R39, the capacitor C22, and the No. 8 pin PA2 end of the single chip STM32F030K6, and the other end of the resistor R39 and the capacitor C22 is 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 It 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. 9 and FIG.
  • the single chip STM32F030K6 can read the voltage value lower than 3V, but the electronic cigarette battery
  • the supply voltage 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 enable micro processing. The device 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.
  • Road finder r 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
  • the operating voltage supplied to the microprocessor 10 is such that the regulated operating voltage is stabilized at the nominal operating voltage of the microprocessor 10.
  • FIG. 11 it is a schematic diagram of a linear voltage regulator circuit used in an internal circuit of an electronic cigarette. Referring to FIG. 9 and FIG. 11, the rated operating voltage of the single chip STM32F030K6 in FIG. 9 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. 9)
  • 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. 12 it is a schematic diagram of a reset circuit used in an internal circuit of an electronic cigarette. Referring to FIG. 9 and FIG. 12, the input terminal Vin of the reset circuit is connected to the VDD terminal of the No. 1 pin of the single chip STM32F030K6.
  • the output terminal Vo u t is connected with the NRST terminal of the 4th pin of the single chip STM32F030K6, and the reset circuit detects and obtains the single chip S
  • the electronic cigarette further includes: an alarm circuit 6 connected to the microprocessor 10; the microprocessor 10 is configured to determine the electronic cigarette When the smoke oil is exhausted, the alarm data is output to the alarm circuit 6; the alarm circuit 6 is configured to output an alarm message based on the alarm data to remind the user that the smoke oil is exhausted; wherein the alarm information includes text information and voice At least one of 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 is for displaying output alarm information
  • the alarm circuit 6 includes: a display screen connected to the microprocessor 10, and the microprocessor 10 a wake-up sub-circuit connected to the display screen;
  • 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 And displaying the 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 an output based on the alarm data after the wake-up to remind the user that the smoke oil is exhausted Text information.
  • 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 Q4, and a P-channel field effect transistor Q5.
  • the base of the transistor Q3 is connected to the 21st pin PA11 of the single chip STM32F030K6, and the emitter and the input VDD voltage are connected.
  • the collector is 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+ of the battery, and the gate of the FET Q5 is passed.
  • the resistor R51 is connected to the positive voltage terminal B+ of the battery, the source is directly connected to the positive voltage terminal B+ of the battery, and the drain is connected to the 5th pin VBAT (operating voltage input terminal) of the display screen.
  • 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, the display is powered off; when the microprocessor determines that the electronic cigarette smoke is about to After exhaustion, the wake-up trigger signal (such as a low-level signal) is output to the base of the third-stage tube Q3 through the PA11 end of the 21st pin, and the triode Q3 is turned on, so that the transistor Q4 and the field effect transistor Q5 are sequentially turned on. And power on the display.
  • the wake-up trigger signal such as a low-level signal
  • 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 a triggering action, And outputting, to the microprocessor 10, 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.
  • a fourth trigger switch 74 configured to output, to the microprocessor 10, a fourth trigger signal indicating charging to an external device after receiving the triggering action, so that the microprocessor 10 is based on the The four trigger signals control the power supply circuit 3 to charge an external device
  • FIG. 14 is a schematic diagram of a trigger circuit used in an internal circuit of an electronic cigarette, a first trigger switch 71, a second trigger switch 72, and a third trigger in FIG. 8B.
  • the Shaoguan 73 and the fourth trigger switch 74 respectively correspond to the switches (S1-S4) in FIG. 14, and the switches (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 STM32F030 K6, so that the microprocessor
  • the power supply circuit for controlling the heating wire L is controlled based on the high level signal.
  • the switch S1 When the triggering action is not received by the switch S1, the high level signal is not detected at the P30 terminal of the microprocessor No. 30 pin, and the broken heating wire is controlled.
  • the power supply loop of L when the switch S2 receives the trigger action, outputs 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 for control based on the high level signal.
  • the duty ratio of the PWM wave that is turned on by the FET Q1 to increase the output power to the heating wire L.
  • the signal is flat, and the duty ratio of the PWM wave for controlling the conduction of the FET Q1 is kept unchanged; when the triggering action is received by the S3, the STM32F030K6 outputs a level signal indicating that the smoking power is reduced (eg, low) Level signal), so that the single chip STM32F030K6 adjusts the duty ratio of the PWM wave for controlling 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 the switch S3 is not received To trigger ⁇ , the low-level signal is not detected at the PB5 end of the No.
  • a level signal indicating that the smoking power is reduced (eg, low) Level signal
  • the power supply circuit 3 includes The internal charging interface 31, the charging management sub-circuit 32, the battery 33 and the external charging sub-circuit 34 are sequentially connected; the internal charging interface 31 is for connecting with an external power source, and acquiring electric energy; the charging management sub-circuit 32 Also connected to the microprocessor 10 for charging management of the battery 33 based on a battery charging management signal of the microprocessor 10; 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 is configured to raise the battery voltage Pressing, and boosting the boosted voltage to the external device through the external charging interface.
  • FIG. 15A and FIG. 15B is a schematic diagram of a power supply circuit used in an internal circuit of an electronic cigarette, and the circuit in FIG. 15A and the circuit in FIG. 15B are connected through a terminal Um.
  • the P1 interface in FIG. 15A (corresponding to the internal charging interface 31 in FIG. 8B) is a USB interface for externally charging the electronic cigarette, and the P1 pin 1 is connected to the battery charging management chip AP5056, and the AP5056 is the 6th and 7th pins. It is respectively connected with the PF1 end of the No. 3 pin and the PF0 end of the No. 2 pin of the single chip in FIG.
  • 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 PF0 terminal of the No. 2 pin, and the output to the No. 6 pin of the AP 5056 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.
  • 15B is a schematic diagram of an external charging sub-circuit of an electronic cigarette.
  • the voltage signal outputted by the battery positive voltage output terminal B+ is filtered by the capacitors C19 and C20, and then input to the current mode boost converter MT3608.
  • 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 pin 2-4 of the PI interface is connected to the pins 4, 24, and 23 of the STM32F030K6 of the single chip microcomputer, and can be used to program the STM32F030K6.
  • the electronic cigarette further includes: connecting with the power supply circuit 3
  • the battery voltage detecting circuit 8 is configured to detect the voltage of the battery in the power supply circuit 3, and control the power supply circuit 3 to stop supplying power to the heating wire 2 after the battery voltage is lower than the second preset voltage.
  • a battery voltage detecting circuit composed of resistors R44, R45 and a 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 battery protection circuit 9 connected to the two ends of the battery in the power supply circuit 3, configured to overcharge the battery Discharge or short circuit protection.
  • the battery protection circuit includes a battery protection integrated chip MM3280 and a FET Q8, and 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 in the solution of the present application smokes in the user, and the smoke oil is about to be exhausted, and the electronic cigarette can be controlled to stop working to avoid the phenomenon of burning cotton, and the user can also remind the user of the smoke.
  • the oil is exhausted, thereby improving the user experience.
  • the electronic cigarette has the functions of charging an external electronic device, managing and protecting the battery, and having various functions and stable performance, and has good practicability.
  • the electronic cigarette is used to implement the above method for detecting whether the smoke oil in the electronic cigarette is exhausted, and therefore, one or more embodiments of the electronic cigarette are the same as one or more embodiments of the above method. , I will not repeat them here.
  • embodiments of the invention may 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

La présente invention concerne un procédé permettant de détecter si l'huile de cigarette dans une cigarette électronique est épuisée, ainsi qu'une cigarette électronique, qui permettent de résoudre le problème technique, rencontré dans l'état de la technique, selon lequel le coton est brûlé car la cigarette électronique ne permet pas à un utilisateur de savoir si l'huile de cigarette est sur le point d'être épuisée, l'utilisateur continuant de fumer lorsque l'huile de cigarette est sur le point d'être épuisée. Le procédé comprend les étapes suivantes : S1, lorsqu'un signal de fumée est détecté, fourniture d'énergie à des fils de chauffage (2, 31, 50), qui sont utilisés pour atomiser l'huile de cigarette, dans une cigarette électronique, de sorte que les fils de chauffage (2, 31, 50) fonctionnent ; et S2, acquisition d'une vitesse de changement de température des fils de chauffage (2, 31, 50), et lorsque la vitesse de changement est supérieure à une valeur préétablie, détermination de l'épuisement de l'huile de cigarette dans la cigarette électronique et arrêt de la fourniture d'énergie aux fils de chauffage (2, 31, 50). Ainsi, lorsqu'un utilisateur utilise une cigarette électronique et que l'huile de cigarette est sur le point d'être épuisée, la cigarette électronique est commandée à temps pour cesser de fonctionner, de manière à éviter l'apparition d'un phénomène de combustion de coton, ce qui permet d'améliorer l'expérience de l'utilisateur.
PCT/CN2015/086547 2015-08-10 2015-08-10 Procédé permettant de détecter si l'huile de cigarette dans une cigarette électronique est épuisée, et cigarette électronique Ceased WO2017024477A1 (fr)

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PCT/CN2015/086547 WO2017024477A1 (fr) 2015-08-10 2015-08-10 Procédé permettant de détecter si l'huile de cigarette dans une cigarette électronique est épuisée, et cigarette électronique

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