WO2020107394A1 - 一种电子烟控制方法及电子烟 - Google Patents

一种电子烟控制方法及电子烟 Download PDF

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Publication number
WO2020107394A1
WO2020107394A1 PCT/CN2018/118524 CN2018118524W WO2020107394A1 WO 2020107394 A1 WO2020107394 A1 WO 2020107394A1 CN 2018118524 W CN2018118524 W CN 2018118524W WO 2020107394 A1 WO2020107394 A1 WO 2020107394A1
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WO
WIPO (PCT)
Prior art keywords
resistance value
heating element
time
electronic cigarette
unit
Prior art date
Application number
PCT/CN2018/118524
Other languages
English (en)
French (fr)
Inventor
朱伟
王健
周波
Original Assignee
昂纳自动化技术（深圳）有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 昂纳自动化技术（深圳）有限公司 filed Critical 昂纳自动化技术（深圳）有限公司
Priority to US17/295,051 priority Critical patent/US20210321675A1/en
Priority to JP2021523254A priority patent/JP7204909B2/ja
Priority to ES18941113T priority patent/ES2974013T3/es
Priority to PCT/CN2018/118524 priority patent/WO2020107394A1/zh
Priority to EP18941113.5A priority patent/EP3864983B8/en
Publication of WO2020107394A1 publication Critical patent/WO2020107394A1/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
    • A24F40/50—Control or monitoring
    • A24F40/51—Arrangement of sensors
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
    • A24F40/50—Control or monitoring
    • A24F40/57—Temperature control
    • 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
    • A24F40/90—Arrangements or methods specially adapted for charging batteries thereof
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00—Control of temperature
    • G05D23/19—Control of temperature characterised by the use of electric means
    • G05D23/20—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature
    • G05D23/24—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature the sensing element having a resistance varying with temperature, e.g. a thermistor
    • G05D23/2401—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature the sensing element having a resistance varying with temperature, e.g. a thermistor using a heating element as a sensing element

Definitions

  • the invention relates to the technical field of electronic cigarettes, and more particularly, to an electronic cigarette control method and an electronic cigarette.
  • e-cigarettes are mainly used to simulate the feeling of smoking without affecting health.
  • Existing e-cigarettes are divided into two parts: an atomizer and a battery rod.
  • the battery rod is connected to the atomizer It supplies electricity and atomizes smoke oil for consumers to smoke.
  • the first two output methods can not control the atomization temperature of the heating element of the atomizer very well, which affects the user's pumping experience; the latter method of calculating the resistance change of the atomizer requires the atomizer to be connected to the battery rod.
  • the initial value setting of the atomizer resistance is more cumbersome.
  • the technical problem to be solved by the present invention is to provide an electronic cigarette control method and an electronic cigarette in view of the aforementioned partial technical defects of the prior art.
  • the technical solution adopted by the present invention to solve its technical problems is to construct an electronic cigarette control method, including the following steps:
  • step S3 Obtain the first real-time resistance value corresponding to the first preset time after each trigger of the starting unit to calculate the resistance value change of the heating element within the first preset time, and confirm the resistance Whether the value change is greater than the first preset value; if yes, the input power of the heating element is turned off, otherwise, step S4 is executed;
  • an electronic cigarette control method of the present invention further includes:
  • step S13 If not, it is determined that the electronic cigarette has not been updated, and the initial resistance value remains unchanged, and step S2 is executed.
  • an electronic cigarette control method of the present invention further includes:
  • an electronic cigarette control method of the present invention further includes:
  • the stop trigger time is greater than the second preset time
  • the electronic cigarette is dormant; when the electronic cigarette is in the dormant state, the activation unit is triggered, it is determined that the activation unit is triggered for the first time; and/or
  • the activation unit After the activation unit is triggered, it continuously detects the real-time resistance value of the heating element and determines whether the real-time resistance value is greater than a third preset value; if yes, the input power of the heating element is turned off.
  • the invention also constructs an electronic cigarette, including a battery rod, an atomizer, and a heating element provided in the atomizer, as well as a power supply unit, a starting unit, a microprocessor, and power control provided in the battery rod Unit and resistance detection unit;
  • the starting unit is connected to the microprocessor and used for sending a starting signal to the microprocessor to trigger the microprocessor to work;
  • the resistance value detecting unit is connected to the heating element and the microprocessor, and is used for detecting the real-time resistance value of the heating element during the operation of the starting unit and sending it to the microprocessor;
  • the microprocessor is used to store the real-time resistance value of the heating element when the starting unit is triggered for the first time, and obtain the target resistance after heating by the heating element according to the target temperature of the heating element and the initial resistance value value;
  • the microprocessor is connected to the power control unit for outputting a control signal to the power control unit according to the real-time resistance value and the target resistance value of the heating body to control the input power of the heating body.
  • the resistance detection unit includes a first sampling circuit and a switching circuit connected to the first sampling circuit;
  • the switching circuit includes a field effect transistor Q5, a field effect transistor Q6, and a transistor Q7, the D pole of the field effect transistor Q5 is connected to the D pole of the field effect transistor Q6, and is connected to the C of the transistor Q7 via a resistor R12 Are connected to the pole, the G pole of the field effect transistor Q5 and the G pole of the field effect transistor Q6 are connected to the C pole of the transistor Q7, and the S pole of the field effect transistor Q6 is connected to the The first end of the heating element is connected, and the B pole of the three-connector Q7 is connected to the microprocessor via a resistor R11;
  • the first sampling circuit includes a sampling resistor R14, one end of the sampling resistor R14 is connected to the E pole of the transistor Q7, and at the same time is connected to the micro-processing via a capacitor C9, and the other end of the sampling resistor R14 is connected to the The second end of the heating element is connected and connected to the microprocessor via a resistor R15.
  • the resistance detection unit includes a voltage stabilizing unit and a second sampling unit connected to the voltage stabilizing unit;
  • the voltage stabilizing unit includes a power chip U5, and the power chip U5 is connected to the first end of the heating body through a resistor R11;
  • the second sampling unit includes a sampling resistor R12, one end of the resistor R12 is connected to the first end of the heating element, the other end of the sampling resistor R12 is connected to the microprocessor, and is grounded via a capacitor C10 and It is connected to the second end of the heating element.
  • the starting unit includes a switch K and a field effect transistor Q1.
  • the first pin of the switch K is connected to the power input, and the second pin of the switch K is connected to the G pole of the field effect transistor Q1.
  • the S pole of the field effect transistor Q1 is connected to the microprocessor, and the D pole of the field effect transistor Q1 is connected to the first pin of the switch K and grounded.
  • the power supply unit includes a battery, a charging input unit connected to the battery, a voltage stabilizing unit, and a battery voltage detection unit;
  • the charging input unit includes a connector JF and a charging management chip U1, the input pin of the charging management chip U1 is connected to the first pin of the connector JF, and the output pin of the charging management chip U1 is connected to all The battery connection; and/or
  • the battery voltage detection unit includes a transistor Q4 and a field effect transistor Q3, the S pole of the field effect transistor Q3 is connected to the battery, and the D pole of the field effect transistor Q3 is connected to the microprocessor via resistors R8 and R9 ,
  • the resistor R8 is grounded via a resistor R10
  • the C pole of the transistor Q4 is connected to the battery via a resistor R7
  • the B pole of the transistor Q4 is connected to the microprocessor via a resistor R6, and the triode takes over Q4 E pole is grounded;
  • the voltage stabilizing unit includes a voltage stabilizing chip U3, an input end of the voltage stabilizing chip U3 is connected to the battery, and an output end of the voltage stabilizing chip U3 is connected to the microprocessor.
  • the power control unit includes a logic chip U4 and a field effect transistor Q2; the second pin of the logic chip U4 is connected to the microprocessor, and the fourth pin of the logic chip U4 is connected to the field effect
  • the G pole of the tube Q2 the D pole of the field effect tube Q2 is connected to the first end of the heating element, and the S pole of the field effect tube Q2 is connected to the battery.
  • An electronic cigarette control method and electronic cigarette implementing the present invention have the following beneficial effects: the temperature of the electronic cigarette can be quickly controlled while saving battery energy, while preventing dry heating and reducing static power consumption.
  • FIG. 1 is a program flowchart of a first embodiment of an electronic cigarette control method of the present invention
  • FIG. 2 is a program flowchart of a second embodiment of an electronic cigarette control method of the present invention.
  • FIG. 3 is a program flowchart of a third embodiment of an electronic cigarette control method of the present invention.
  • FIG. 4 is a logic block diagram of an embodiment of an electronic cigarette of the present invention.
  • FIG. 5 is a schematic diagram of a first partial circuit of an electronic cigarette of the present invention.
  • FIG. 6 is a schematic diagram of a second partial circuit of an electronic cigarette of the present invention.
  • FIG. 7 is a schematic diagram of a third partial circuit of an electronic cigarette of the present invention.
  • FIG. 8 is a fourth partial circuit schematic diagram of an electronic cigarette of the present invention.
  • FIG. 9 is a fifth partial circuit schematic diagram of an electronic cigarette of the present invention.
  • an electronic cigarette control method of the present invention includes the following steps: S1. Obtaining the resistance value of the heating element 60 when the starting unit 40 of the electronic cigarette is first triggered by the resistance value detection unit 50 , And stored as the initial resistance value of the heating body 60; specifically, when the electronic cigarette is smoked for the first time, the electronic cigarette is triggered by the starting unit 40 to start supplying power to the heating body 60, and the resistance value of the heating body 60 is obtained at the initial power supply.
  • the temperature of the body 60 has not started to rise.
  • the temperature of the heating body 60 is approximately the normal temperature.
  • the resistance value of the corresponding heating body 60 is the resistance value corresponding to the normal temperature.
  • the resistance value corresponding to the normal temperature temperature is stored as the initial resistance value to calculate Used in the process.
  • the target temperature of the heating element 60 to obtain the target resistance value of the heating element 60 according to the initial resistance value; specifically, the heating element 60 used in the electronic cigarette usually has stable temperature resistance characteristics, such as stainless steel 316, titanium, nickel , Nickel-chromium alloy, etc., that is, each time the temperature increases by 1 °C, the resistance of the heating element 60 changes correspondingly f, f can be understood as a fixed resistance or a function of change.
  • the initial temperature T1 the preset atomization target temperature is T2
  • T1 is usually normal temperature
  • T2 is the optimal atomizer temperature of the atomizer, or it can be a certain temperature.
  • step S3 Obtain the first real-time resistance value corresponding to the first preset time after each trigger of the starting unit 40 to calculate the resistance value change of the heating element 60 within the first preset time, and confirm whether the resistance value change is greater than the first Preset value; yes, turn off the input power of the heating body 60, otherwise, go to step S4; specifically, in the process of using the electronic cigarette, in the first preset time Tn per unit time at the beginning of each smoking It is determined whether the resistance increase value of the heating element 60 exceeds a preset value, if yes, it is determined to be dry burning, and the input power of the heating element 60 is turned off. Otherwise, it is normal atomization.
  • the resistance value detection unit 50 obtains the real-time resistance value of the heating body 60 according to a preset rule to control the input power of the heating body 60 so that the real-time resistance value of the heating body 60 is the target resistance value. Specifically, after the initial initial value of the heating element 60 of the atomizer is detected, the target resistance value to which the starting heating element 60 needs to be heated can be calculated, and the input power of the heating element 60 can be controlled so that the real-time resistance value of the heating element 60 and the expected target The resistance value reaches a dynamic balance, so as to achieve constant temperature heating of the heating body 60 of the atomizer, where the smaller the dynamic balance range between the real-time resistance value and the target resistance value during the adjustment process, the more accurate the constant temperature.
  • an electronic cigarette control method of the present invention further includes:
  • step S11 After the start unit 40 stops triggering, obtain the second real-time resistance value of the heating element 60 at every third preset time interval in the second preset time through the resistance value detection unit 50, and determine whether the second real-time resistance value is greater than the second Two preset values; S12, if it is, it is determined that the electronic cigarette has been updated, and a third real-time resistance value immediately following the second real-time resistance value and less than the preset resistance value is updated to the initial resistance value, and step S2 is performed; S13, if If not, it is determined that the electronic cigarette has not been updated, and the initial resistance value remains unchanged, and step S2 is executed.
  • the resistance value detection unit 50 continuously detects the resistance value of the atomizer for a period of time, that is, within the second preset time Tf, such as 1 min, 2 min, and the interval between each detection t2 is the third
  • the preset time, t2 is less than the time when the battery rod pool disassembles the atomizer, such as 1 second.
  • t2 can be set reasonably to reduce the detection power consumption, and it can be detected whether the battery rod has the atomizer replaced. Since t2 is less than the time of atomization replacement, the battery rod must be able to detect that the resistance of the heating element 60 is greater than the conventional resistance value.
  • the microprocessor 20 can determine that the atomizer has been replaced, so the initial resistance value of the heating element 60 needs to be re-detected Obtain, after judging that the replacement of the atomizer is completed by the resistance value, store the normal resistance value detected by the resistance value detection unit 50 for the first time to store the initial resistance value of the new heating element 60 to be recalled in a later process. If after the electronic cigarette is smoked, if it is not used for a period of time, that is, the second preset time Tf, here, the selection of the second preset time Tf is slightly larger than that after the electronic cigarette stops heating, the battery rod and fog of the electronic cigarette When the atomizer is not separated, the time required for the atomizer to return to normal temperature.
  • the detection unit continues to detect, and the interval between every two detections is the third preset time.
  • the selection of the third preset time is slightly less than the time required for the electronic cigarette to replace the atomizer normally. The purpose is to ensure that the replacement of the atomizer can be intelligently detected, and the battery energy is saved to the greatest extent, because the battery energy needs to be consumed each time.
  • the microprocessor 20 continues to use the stored initial resistance value, and controls the heating during the use of the electronic cigarette according to the initial resistance value Input power of body 60.
  • the size of the second preset time Tf can be set reasonably to reduce the static power consumption of the electronic cigarette.
  • an electronic cigarette control method of the present invention further includes:
  • S10 Record the start time of the start unit 40.
  • the stop trigger time is greater than the second preset time, and start the start unit 40 again, it is determined that the start unit 40 is the first trigger.
  • the electronic cigarette stops working for example, when the smoking time is longer than the second preset time Tf
  • the electronic cigarette is used again that is, when the activation unit 40 is triggered, it is determined as the first trigger of the activation unit 40, and according to the first Trigger for processing.
  • an electronic cigarette control method of the present invention further includes:
  • the electronic cigarette When the stop trigger time is greater than the second preset time, the electronic cigarette is dormant; when the electronic cigarette is in the dormant state, the activation unit 40 is triggered, it is determined that the activation unit 40 is the first trigger. Specifically, after the electronic cigarette stops working, for example, the smoking time is longer than the second preset time Tf, the electronic cigarette can be set to sleep. In the electronic cigarette rest state, the resistance detection unit 50 no longer detects the resistance of the heating element 60.
  • the electronic cigarette When the electronic cigarette is in the dormant state, the electronic cigarette can be triggered to end dormancy by triggering the activation unit 40, and the trigger of the activation unit 40 is used as the first trigger to obtain the initial resistance value of the heating body 60 to perform the above operation.
  • an electronic cigarette control method of the present invention further includes: continuously detecting the real-time resistance value of the heating element after the activation unit is triggered, and determining whether the real-time resistance value is greater than the third preset value; if yes, turning off the heating element input power.
  • the input power of the heating element is a constant power input
  • the output voltage and output current are continuously detected during the entire time triggered by the starting unit, and the feedback microprocessor calculates the resistance value of the heating element, once the third preset value is reached, Stop the output to prevent the atomizer from burning dry.
  • an electronic cigarette of the present invention includes a battery rod, an atomizer, and a heating body 60 provided in the atomizer, and a power supply unit 10 provided in the battery rod.
  • start unit 40 is connected to microprocessor 20 and is used to send a start signal to microprocessor 20 to trigger microprocessor 20 to work;
  • resistance value The detection unit 50 is connected to the heating body 60 and the microprocessor 20, and is used to detect the real-time resistance value of the heating body 60 during the operation of the starting unit 40 and send it to the microprocessor 20;
  • the microprocessor 20 is used to store the first time the starting unit 40 is triggered
  • the real-time resistance value of the heating element 60 is the initial resistance value, and the target resistance value after heating of the heating element 60 is obtained according to the target temperature of the heating element 60 and the initial resistance value;
  • the microprocessor 20 is connected to the power control unit 30 to be used according to the heating element 60 Real-time resistance and
  • the electronic cigarette is smoked for the first time, that is, the electronic cigarette is triggered by the starting unit 40 to start supplying power to the heating body 60.
  • the resistance value of the heating body 60 is obtained.
  • the corresponding resistance value of the heating element 60 is the resistance value corresponding to the normal temperature
  • the resistance value corresponding to the normal temperature temperature is stored as the initial resistance value for use in the calculation process of the temperature increase.
  • the heating element 60 used in electronic cigarettes usually has stable temperature resistance characteristics, such as stainless steel 316, titanium, nickel, nickel-chromium alloy, etc., that is, each time the temperature rises by 1 °C, the resistance value of the heating element 60 changes accordingly f, f can It is understood as a fixed resistance or as a function of change.
  • the initial temperature T1 the preset atomization target temperature is T2
  • T1 is usually normal temperature
  • T2 is the optimal atomizer temperature of the atomizer, or it can be a certain temperature.
  • the target resistance value to which the starting heating element 60 needs to be heated can be calculated, and the input power of the heating element 60 can be controlled so that the real-time resistance value of the heating element 60 and the expected target resistance value reach A dynamic balance, so as to achieve constant temperature heating of the heating body 60 of the atomizer, where the real-time resistance value and the target resistance value in the process of adjusting the smaller the dynamic balance amplitude, the more accurate the constant temperature.
  • the power control unit to control the input power of the heating element includes raising or lowering or stopping the input power of the heating element, so that the heating temperature of the heating element reaches a dynamic balance.
  • the resistance detection unit 50 includes a first sampling circuit and a switch circuit 51 connected to the first sampling circuit;
  • the switch circuit includes a field effect transistor Q5, a field effect transistor Q6, and a transistor Q7 ,
  • the D pole of the FET Q5 is connected to the D pole of the FET Q6, and is connected to the C pole of the transistor Q7 through the resistor R12, the G pole of the FET Q5 and the G pole of the FET Q6 are both connected to the transistor Q7
  • the C pole is connected, and the S pole of the field effect transistor Q6 is connected to the first end of the heating body 60 through the resistor R13, and the B pole of the three-connected Q7 is connected to the microprocessor 20 through the resistor R11;
  • the first sampling circuit includes a sampling resistor R14, sampling One end of the resistor R14 is connected to the E pole of the transistor Q7, and at the same time is connected to the micro-processing through the capacitor C9, the other end of the sampling resistor R14 is connected to the
  • the field effect transistor Q5, the field effect transistor Q6 and the transistor Q7 form a switching circuit, wherein the field effect transistor Q6 prevents reverse conduction.
  • Resistor R11, resistor R12 and resistor R13 are current limiting resistors.
  • Resistor R15 and capacitor C9 form an RC filter to feed back the voltage of sampling resistor R14 to the microprocessor 20.
  • the microprocessor 20 calculates the flow through the heating element 60 and the resistor R13 and The current of the resistor R14 is further calculated based on the battery voltage to calculate the real-time resistance of the heating body 60.
  • the microprocessor 20 outputs the R-EN signal to control the duration of the resistance detection and the interval between multiple detections by controlling the B pole of the transistor Q7.
  • the resistance detection unit 50 includes a voltage stabilizing unit and a second sampling unit connected to the voltage stabilizing unit; the voltage stabilizing unit includes a power chip U5, and the power chip U5 passes the resistor R11 and generates heat
  • the first end of the body 60 is connected;
  • the second sampling unit includes a sampling resistor R12, one end of the resistor R12 is connected to the first end of the heating body 60, the other end of the sampling resistor R12 is connected to the microprocessor 20, and is grounded through the capacitor C10 and It is connected to the second end of the heating element 60.
  • the heating element 60 is powered by the voltage stabilizing chip U5.
  • the voltage stabilizing chip U5 can use TPS7A0968 or SGM2019.
  • the resistor R11 is a current limiting and voltage dividing resistor, which can reduce the detection power consumption.
  • the capacitor, resistor R12 and capacitor C10 form an RC filter, and the microprocessor 20 obtains the feedback signal of the heating body 60 to calculate the resistance of the heating body 60; and the microprocessor 20 outputs the R-EN signal to control the resistance detection according to the calculated resistance The duration and interval between multiple tests.
  • the starting unit 40 includes a switch K and a field effect transistor Q1.
  • the first pin of the switch K is connected to the power input, and the second pin of the switch K is connected to the G pole of the field effect transistor Q1.
  • the S pole of the tube Q1 is connected to the microprocessor 20, and the D pole of the field effect tube Q1 is connected to the first pin of the switch K and grounded.
  • the switch K can be a light touch switch, airflow sensor, air pressure sensor, touch sensor switch, etc., when the electronic cigarette is started, the field effect tube Q1 is triggered by the switch K and generates a trigger signal KEY to the microprocessor 20, micro The processor 20 controls the internal circuit of the electronic cigarette to start working.
  • the power supply unit 10 includes a battery 11, a charging input unit 12 connected to the battery 11, a voltage stabilizing unit 12, and a battery voltage detection unit 13;
  • the charging input unit 12 includes a connector JF It is connected to the charge management chip U1, the input pin of the charge management chip U1 is connected to the first pin of the connector JF, and the output pin of the charge management chip U1 is connected to the battery;
  • the battery voltage detection unit 13 includes The transistor Q4 and the field effect transistor Q3, the S pole of the field effect transistor Q3 is connected to the battery, the D pole of the field effect transistor Q3 is connected to the microprocessor 20 via resistors R8 and R9, the resistor R8 is grounded via the resistor R10, and the C pole of the transistor Q4 is The resistor R7 is connected to the battery, the B pole of the transistor Q4 is connected to the microprocessor 20 via the resistor R6, and the E pole of the three transistor Q4 is grounded; in another embodiment, the voltage stabilizing unit 14
  • the charging input unit includes a MICRO USB/DC input structure
  • the charging management chip U1 includes BQ21040, SGM4056, or BQ24040
  • the charging management chip U1 sends the charging state to the microprocessor 20.
  • the transistor Q4 in the battery voltage detection unit 13 uses an NPN transistor S8050
  • the field effect transistor Q3 uses an enhanced field effect transistor P-MOSFET.
  • the battery output status is obtained by detecting and sampling the battery voltage to perform corresponding operations on the battery according to needs.
  • resistor R6 and resistor R7 are current limiting resistors
  • transistor Q3 and field effect transistor Q4 have a switching effect
  • resistor and R8 and resistor R10 perform voltage division
  • resistor R9 and capacitor C7 form an RC filter.
  • the power control unit 30 includes a logic chip U4 and a field effect transistor Q2, the second pin of the logic chip U4 is connected to the microprocessor 20, and the fourth pin of the logic chip U4 The pin is connected to the G pole of the field effect tube Q2, the D pole of the field effect tube Q2 is connected to the first end of the heating body 60, and the S pole of the field effect tube Q2 is connected to the battery.
  • the logic chip U4 uses SN74AUP1G04, which can increase the drive current and voltage of the microprocessor 20.
  • MOSFET Q2 uses P-MOSFET PB521BX.
  • the resistor R5 is a current limiting resistor, which limits the input current of the heating element 60.
  • the display unit 70 may include an RGB-LED connected to the microprocessor 20.
  • the status of the battery and the working status of the electronic cigarette can be displayed through the display unit 70.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Control Of Resistance Heating (AREA)

Abstract

本发明涉及一种电子烟控制方法及电子烟，本发明的一种电子烟控制方法包括以下步骤：S1、通过阻值检测单元获取电子烟的启动单元首次触发时发热体的阻值存储为发热体初始阻值；S2、获取发热体的目标温度以根据初始阻值获取发热体的目标阻值；S3、获取启动单元每次触发后的第一预设时间对应的第一实时阻值，以计算发热体在第一预设时间内的阻值变化，并确定其是否大于第一预设值；是，则关断发热体的输入功率，否，则执行步骤S4；S4、通过阻值检测单元依照预设规则获取发热体的实时阻值，以控制发热体的输入功率以使发热体的实时阻值为目标阻值。实施本发明能够在节省电池能量的情况下快速的进行电子烟温控，同时防干烧加热。

Description

一种电子烟控制方法及电子烟 技术领域
本发明涉及电子烟技术领域，更具体地说，涉及一种电子烟控制方法及电子烟。
 背景技术
电子烟作为一种香烟的替代品，主要用于在不影响健康的前提下模拟吸烟的感觉，现有的电子烟分为雾化器和电池杆两大部件，电池杆与雾化器连接并为其供电、雾化烟油，供消费者吸食。电池杆对雾化器供电方式目前主要有以下几种方式：1）电池杆将电池以一个稳定电压恒定输出给雾化器；2）电池杆将电池以一个恒定功率输出供给雾化器；3）电池杆通过计算雾化器发热体阻值变化、动态调节输出功率，实现恒温输出供给雾化器雾化烟油。前两种输出方式不能很好控制雾化器发热体的雾化温度，影响使用者的抽吸体验；后一种计算雾化器阻值变化的方式，需雾化器在连接电池杆时为冷却状态，避免计算出错，或通过按键设定初始阻值，雾化器电阻初值设定较为繁琐。
 技术问题
本发明要解决的技术问题在于，针对现有技术的上述部分技术缺陷，提供一种电子烟控制方法及电子烟。
 技术解决方案
本发明解决其技术问题所采用的技术方案是：构造一种电子烟控制方法，包括以下步骤：
S1、通过阻值检测单元获取电子烟的启动单元首次触发时发热体的阻值，并存储为发热体初始阻值；
S2、获取所述发热体的目标温度，以根据所述初始阻值获取所述发热体的目标阻值；
S3、获取所述启动单元每次触发后的第一预设时间对应的第一实时阻值，以计算所述发热体在所述第一预设时间内的阻值变化，并确认所述阻值变化是否大于第一预设值；是，则关断所述发热体的输入功率，否，则执行步骤S4；
S4、通过所述阻值检测单元依照预设规则获取所述发热体的实时阻值，以控制所述发热体的输入功率以使所述发热体的实时阻值为所述加热后的目标阻值。
优选地，本发明的一种电子烟控制方法还包括：
S11、在所述启动单元停止触发后，通过所述阻值检测单元获取第二预设时间内每间隔第三预设时间的所述发热体的第二实时阻值，判定所述第二实时阻值是否大于第二预设值；
S12、若是，则判定所述电子烟已经被更新，获取紧随所述第二实时阻值且小于所述预设阻值的第三实时阻值并更新为所述初始阻值，执行所述步骤S2；
S13、若否，则判定所述电子烟未被更新，所述初始阻值不变，执行所述步骤S2。
优选地，本发明的一种电子烟控制方法还包括：
S10、记录所述启动单元停止触发时间，当所述停止触发时间大于所述第二预设时间，再次触发所述启动单元，则判定为所述启动单元首次触发。
优选地，本发明的一种电子烟控制方法还包括：
当所述停止触发时间大于所述第二预设时间时，休眠所述电子烟；在所述电子烟为休眠状态时触发所述启动单元，则判定为所述启动单元首次触发；和/或
在所述启动单元触发后持续检测所述发热体的实时阻值，并判定所述实时阻值是否大于第三预设值；是，则关断所述发热体的输入功率。
本发明还构造一种电子烟，包括电池杆、雾化器和设于所述雾化器内的发热体，以及设于所述电池杆内的供电单元、启动单元、微处理器、功率控制单元和阻值检测单元；
所述启动单元连接所述微处理器，用于发送启动信号至所述微处理器，以触发所述微处理器工作；
所述阻值检测单元连接所述发热体和所述微处理器，用于检测所述启动单元工作过程中所述发热体的实时阻值并发送至所述微处理器；
所述微处理器用于存储所述启动单元首次触发时所述发热体的实时阻值为初始阻值，并根据所述发热体的目标温度和所述初始阻值获取发热体加热后的目标阻值；
所述微处理器连接所述功率控制单元，用于根据所述发热体实时阻值和目标阻值输出控制信号至所述功率控制单元以控制所述发热体的输入功率。
优选地，所述阻值检测单元包括第一采样电路、与所述第一采样电路连接的开关电路；
所述开关电路包括场效应管Q5、场效应管Q6和三极管Q7，所述场效应管Q5的D极与所述场效应管Q6的D极连接、并经电阻R12与所述三极管Q7的C极连接，所述场效应管Q5的G极和所述场效应管Q6的G极均与所述所述三极管Q7的C极连接，所述场效应管Q6的S极经电阻R13与所述发热体的第一端连接，所述三接管Q7的B极经电阻R11与所述微处理器连接；
所述第一采样电路包括采样电阻R14，所述采样电阻R14的一端与所述三极管Q7的E极连接、同时经电容C9与所述微处理连接，所述采样电阻R14的另一端与所述发热体的第二端连接、同时经电阻R15与所述微处理器连接。
优选地，所述阻值检测单元包括稳压单元和与所述稳压单元连接的第二采样单元；
所述稳压单元包括电源芯片U5，所述电源芯片U5经过电阻R11与所述发热体的第一端连接；
所述第二采样单元包括采样电阻R12，所述电阻R12的一端与所述发热体的第一端连接，所述采样电阻R12的另一端与所述微处理器连接，并经过电容C10接地且与所述发热体的第二端连接。
优选地，所述启动单元包括开关K和场效应管Q1，所述开关K的第一管脚连接电源输入，所述开关K的第二管脚连接所述场效应管Q1的G极，所述场效应管Q1的S极连接所述微处理器，所述场效应管Q1的D极连接所述开关K的第一管脚并接地。
优选地，所述供电单元包括电池、与所述电池连接的充电输入单元、稳压单元和电池电压检测单元；
所述充电输入单元包括连接器JF和充电管理芯片U1，所述充电管理芯片U1的输入管脚与所述连接器JF的第一管脚连接，所述充电管理芯片U1的输出管脚与所述电池连接；和/或
所述电池电压检测单元包括三极管Q4和场效应管Q3，所述场效应管Q3的S极连接所述电池，所述场效应管Q3的D极经电阻R8和R9与所述微处理器连接，所述电阻R8经电阻R10接地，所述三极管Q4的C极经电阻R7与所述电池连接，所述三极管Q4的B极经电阻R6与所述微处理器连接，所述三接管Q4的E极接地；和/或
所述稳压单元包括稳压芯片U3，所述稳压芯片U3的输入端连接所述电池，所述稳压芯片U3的输出端连接所述微处理器。
优选地，所述功率控制单元包括逻辑芯片U4和场效应管Q2；所述逻辑芯片U4的第二管脚连接所述微处理器，所述逻辑芯片U4的第4管脚连接所述场效应管Q2的G极，所述场效应管Q2的D极连接所述发热体的第一端，所述场效应管Q2的S极连接所述电池。
 有益效果
实施本发明的一种电子烟控制方法及电子烟，具有以下有益效果：能够在节省电池能量的情况下快速的进行电子烟温控，同时防干烧加热，降低静态功耗。
 附图说明
下面将结合附图及实施例对本发明作进一步说明，附图中：
图1是本发明一种电子烟控制方法第一实施例的程序流程图；
图2是本发明一种电子烟控制方法第二实施例的程序流程图；
图3是本发明一种电子烟控制方法第三实施例的程序流程图；
图4是本发明一种电子烟一实施例的逻辑框图；
图5是本发明一种电子烟的第一局部电路原理图；
图6是本发明一种电子烟的第二局部电路原理图；
图7是本发明一种电子烟的第三局部电路原理图；
图8是本发明一种电子烟的第四局部电路原理图；
图9是本发明一种电子烟的第五局部电路原理图。
 本发明的实施方式
为了对本发明的技术特征、目的和效果有更加清楚的理解，现对照附图详细说明本发明的具体实施方式。
如图1所示，在本发明的一种电子烟控制方法第一实施例中，包括以下步骤：S1、通过阻值检测单元50获取电子烟的启动单元40首次触发时发热体60的阻值、并存储为发热体60初始阻值；具体的，电子烟首次抽吸时，通过启动单元40触发电子烟开始给发热体60供电，在初始供电时获取发热体60的阻值，这里由于发热体60温度还未开始上升，其发热体60温度近似为常温温度，对应的发热体60阻值为常温对应的阻值，将该常温温度对应的阻值存储作为初始阻值，以在升温计算过程中使用。
S2、获取发热体60的目标温度，以根据初始阻值获取发热体60的目标阻值；具体的，电子烟所使用的发热体60通常具备稳定的温度电阻特性，如不锈钢316、钛、镍、镍铬合金等，，即温度每升高1℃，发热体60阻值进行相应的变化f，f可以理解为一固定电阻或为一个函数变化。当初始温度T1，预设雾化目标温度为T2,测得的雾化器初始阻值R1，这可以计算获得预期的雾化器目标阻值R2=(T2-T1）*f+R1。根据电子烟的使用环境，T1通常为常温，T2为雾化器最佳雾化器温度，也可以为一个确定温度。
S3、获取启动单元40每次触发后的第一预设时间对应的第一实时阻值，以计算发热体60在第一预设时间内的阻值变化，并确认阻值变化是否大于第一预设值；是，则关断发热体60的输入功率，否，则执行步骤S4；具体的，在电子烟使用过程中，在每次抽吸刚开始阶段单位时间第一预设时间内Tn内，判定若发热体60阻值升高值是否超过预设值，是，则判定为干烧，关断发热体60的输入功率。否则为正常雾化。
S4、通过阻值检测单元50依照预设规则获取发热体60的实时阻值，以控制发热体60的输入功率以使发热体60的实时阻值为目标阻值。具体的，雾化器发热体60初始初值检测到后，可计算出发热体60需要加热到的目标阻值，控制发热体60的输入功率，使发热体60的实时阻值与预期的目标阻值达到一个动态平衡，从而实现雾化器发热体60恒温加热，在这里实时阻值与目标阻值在调成过程中动态平衡幅度越小，恒温越准确。
进一步的，如图2所示的实施例中，本发明的一种电子烟控制方法还包括：
S11、在启动单元40停止触发后，通过阻值检测单元50获取第二预设时间内每间隔第三预设时间的发热体60的第二实时阻值，判定第二实时阻值是否大于第二预设值；S12、若是，则判定电子烟已经被更新，获取紧随第二实时阻值且小于预设阻值的第三实时阻值更新为初始阻值，执行步骤S2；S13、若否，则判定电子烟未被更新，初始阻值不变，执行步骤S2。具体的，电子烟在停止抽吸后，阻值检测单元50持续检测雾化器阻值一段时间即第二预设时间Tf内、如1min、2min,每两次检测的时间间隔t2即第三预设时间,t2小于电池杆池拆换雾化器的时间、如1秒，这里可以合理设置t2以降低检测功耗，且可检测到电池杆是否有更换雾化器。由于t2小于雾化更换的时间，所以电池杆一定能检测到一次发热体60阻值大于常规阻值，微处理器20可判定已更换雾化器，那么发热体60的初始阻值需要重新检测获取，在通过阻值判定雾化器更换完成后，将阻值检测单元50第一次检测到的正常阻值为新的发热体60的初始阻值进行存储，以在后面过程中进行调用。若在抽吸电子烟后，在一段时间即第二预设时间Tf内不使用情况时，此处，第二预设时间Tf的选取略大于电子烟停止加热后，电子烟的电池杆与雾化器未分离情况下，雾化器回复常温所需时间，选取此时间可在不影响智能检测效果的前提下，节省电子烟电池能量。同时满足在第二预设时间Tf内，检测单元持续检测，每两次检测间隔时间为第三预设时间，第三预设时间的选取略小于电子烟正常更换雾化器所需时间，其目的是确保能智能检测到雾化器更换的情况下，最大限度节省电池能量，因为每次检测时需要消耗电池能量。同时在第二预设时间Tf时间内，没有检测到更换雾化器，那么微处理器20则继续使用已经储存的初始阻值，并根据该初始阻值在电子烟的使用过程中，控制发热体60的输入功率。此处可以通过合理设置第二预设时间Tf的大小，以降低电子烟的静态功耗。
进一步的，如图3所示的实施例中，本发明的一种电子烟控制方法还包括：
S10、记录启动单元40停止触发时间，当停止触发时间大于第二预设时间，再次触发启动单元40，则判定为启动单元40为首次触发。具体的，电子烟在停止工作例如停止抽吸时间大于第二预设时间Tf后，再次使用该电子烟时，即触发启动单元40时，则判定为启动单元40的首次触发，并根据上述首次触发进行处理。
进一步的，本发明的一种电子烟控制方法还包括：
当停止触发时间大于第二预设时间时，休眠电子烟；在电子烟为休眠状态时触发启动单元40，则判定为启动单元40为首次触发。具体的，在电子烟在停止工作例如停止抽吸时间大于第二预设时间Tf后，可以设置电子烟休眠，在电子烟休状态，阻值检测单元50不再检测检测发热体60阻值，在电子烟处于休眠状态时，可以通过触发启动单元40触发电子烟结束休眠，并且将启动单元40的触发作为首次触发，以获取发热体60的初始阻值，以执行上述操作。
进一步的，本发明的一种电子烟控制方法还包括：在启动单元触发后持续检测发热体的实时阻值，并判定实时阻值是否大于第三预设值；是，则关断发热体的输入功率。具体的，在一些发热体输入功率为恒功率输入的场景，在启动单元触发的整个时间内持续检测输出电压及输出电流，反馈微处理器计算发热体阻值，一旦达到第三预设值，停止输出，防止雾化器干烧。
另，如图4所示的实施例中，本发明的一种电子烟，包括电池杆、雾化器和设于雾化器内的发热体60，以及设于电池杆内的供电单元10、启动单元40、微处理器20、功率控制单元30和阻值检测单元50；启动单元40连接微处理器20，用于发送启动信号至微处理器20，以触发微处理器20工作；阻值检测单元50连接发热体60和微处理器20，用于检测启动单元40工作过程中发热体60的实时阻值并发送至微处理器20；微处理器20用于存储启动单元40首次触发时发热体60的实时阻值为初始阻值，并根据发热体60的目标温度和初始阻值获取发热体60加热后的目标阻值；微处理器20连接功率控制单元30，用于根据发热体60实时阻值和目标阻值输出控制信号至功率控制单元30以控制发热体60的输入功率。具体的，电子烟首次抽吸时，即通过启动单元40触发电子烟开始给发热体60供电，在初始供电时，获取发热体60的阻值，这里由于发热体60温度还未开始上升，其发热体60温度近似为常温温度，对应的发热体60阻值为常温对应的阻值，将该常温温度对应的阻值存储作为初始阻值，以在升温的计算过程中使用。电子烟所使用的发热体60通常具备稳定的温度电阻特性，如不锈钢316、钛、镍、镍铬合金等，即温度每升高1℃，发热体60阻值进行相应的变化f，f可以理解为一固定电阻或为一个函数变化。当初始温度T1，预设雾化目标温度为T2,测得的雾化器初始阻值R1，这可以计算获得预期的雾化器目标阻值R2=(T2-T1）*f+R1。根据电子烟的使用环境，T1通常为常温，T2为雾化器最佳雾化器温度，也可以为一个确定温度。雾化器发热体60初始初值检测到后，可计算出发热体60需要加热到的目标阻值，控制发热体60的输入功率，使发热体60的实时阻值与预期的目标阻值达到一个动态平衡，从而实现雾化器发热体60恒温加热，在这里实时阻值与目标阻值在调成过程中动态平衡幅度越小，恒温越准确。此外，在电子烟使用过程中，在每次抽吸刚开始阶段单位时间第一预设时间内Tn内，判定若发热体60阻值升高值是否超过预设值，是，则判定为干烧，关断发热体60的输入功率。否则为正常雾化。可以理解功率控制单元以控制发热体的输入功率包括升高或降低或停止发热体的输入功率，使发热体加热温度达到动态平衡。
进一步的，如图5所示的实施例中，阻值检测单元50包括第一采样电路、与第一采样电路连接的开关电路51；开关电路包括场效应管Q5、场效应管Q6和三极管Q7，场效应管Q5的D极与场效应管Q6的D极连接、并经电阻R12与三极管Q7的C极连接，场效应管Q5的G极和场效应管Q6的G极均与三极管Q7的C极连接，场效应管Q6的S极经电阻R13与发热体60的第一端连接，三接管Q7的B极经电阻R11与微处理器20连接；第一采样电路包括采样电阻R14，采样电阻R14的一端与三极管Q7的E极连接、同时经电容C9与微处理连接，采样电阻R14的另一端与发热体60的第二端连接、同时经电阻R15与微处理器20连接。具体的，场效应管Q5、场效应管Q6和三极管Q7组成开关电路，其中场效应管Q6防止反向导通。电阻R11、电阻R12和电阻R13为限流电阻，电阻R15和电容C9组成RC滤波器将采样电阻R14的电压反馈到微处理器20，微处理器20计算出流过发热体60及电阻R13和电阻R14的电流，再根据电池电压进一步计算出发热体60的实时阻值。微处理器20输出R-EN信号通过控制三极管Q7的B极控制阻值检测的持续时间和多次检测的间隔时间。
进一步的，如图6所示的实施例中，阻值检测单元50包括稳压单元和与稳压单元连接的第二采样单元；稳压单元包括电源芯片U5，电源芯片U5经过电阻R11与发热体60的第一端连接；第二采样单元包括采样电阻R12，电阻R12的一端与发热体60的第一端连接，采样电阻R12的另一端与微处理器20连接，并经过电容C10接地且与发热体60的第二端连接。具体的，通过稳压芯片U5给发热体60供电，此处稳压芯片U5可以采用TPS7A0968或SGM2019，电阻R11为限流分压电阻，其作用可以降低检测功耗，电容C8和电容C9为滤波电容，电阻R12和电容C10组成RC滤波器，微处理器20获取发热体60的反馈信号以计算发热体60阻值；并根据计算的阻值微处理器20输出R-EN信号控制阻值检测的持续时间和多次检测的间隔时间。
进一步的，如图7所示，启动单元40包括开关K和场效应管Q1，开关K的第一管脚连接电源输入，开关K的第二管脚连接场效应管Q1的G极，场效应管Q1的S极连接微处理器20，场效应管Q1的D极连接开关K的第一管脚并接地。具体的，开关K可选用轻触开关、气流传感器、气压传感器、触摸感应开关等，启动电子烟时，通过开关K触发场效应管Q1导通，并生成触发信号KEY至微处理器20，微处理器20控制电子烟内部电路开始工作。
进一步的，如图8所示，一实施例中，供电单元10包括电池11、与电池11连接的充电输入单元12、稳压单元12和电池电压检测单元13；充电输入单元12包括连接器JF和充电管理芯片U1，充电管理芯片U1的输入管脚与连接器JF的第一管脚连接，充电管理芯片U1的输出管脚与电池连接；在另一实施例中，电池电压检测单元13包括三极管Q4和场效应管Q3，场效应管Q3的S极连接电池，场效应管Q3的D极经电阻R8和R9与微处理器20连接，电阻R8经电阻R10接地，三极管Q4的C极经电阻R7与电池连接，三极管Q4的B极经电阻R6与微处理器20连接，三接管Q4的E极接地；在另一实施例中，稳压单元14包括稳压芯片U3，稳压芯片U3的输入端连接电池11，稳压芯片U3的输出端连接微处理器20。具体的，充电输入单元包括MICRO USB/DC输入结构，充电管理芯片U1包括BQ21040、SGM4056或BQ24040，充电管理芯片U1发送充电状态至微处理器20。电池电压检测单元13中三极管Q4采用NPN型三极管S8050，场效应管Q3采用增强型场效应管P-MOSFET，通过对电池电压进行检测采样获取电池的输出状态，以根据需要对电池进行对应的操作。其中电阻R6和电阻R7为限流电阻，三极管Q3和场效应管Q4起开关效果，电阻和R8和电阻R10进行电压分压，电阻R9和电容C7组成RC滤波器。
进一步的，如图5和图6所示的实施例中，功率控制单元30包括逻辑芯片U4和场效应管Q2，逻辑芯片U4的第二管脚连接微处理器20，逻辑芯片U4的第4管脚连接场效应管Q2的G极，场效应管Q2的D极连接发热体60的第一端，场效应管Q2的S极连接电池。具体的，逻辑芯片U4采用SN74AUP1G04，可以提高微处理器20的驱动电流及电压。场效应管Q2采用 P-MOSFET PB521BX。电阻R5为限流电阻，限制发热体60的输入电流。
进一步的，如图9所示，还包括与微处理器20连接的显示单元70，显示单元70可以包括与微处理器20连接的RGB-LED。可以通过显示单元70显示电池的状态及电子烟的工作状态。
可以理解的，以上实施例仅表达了本发明的优选实施方式，其描述较为具体和详细，但并不能因此而理解为对本发明专利范围的限制；应当指出的是，对于本领域的普通技术人员来说，在不脱离本发明构思的前提下，可以对上述技术特点进行自由组合，还可以做出若干变形和改进，这些都属于本发明的保护范围；因此，凡跟本发明权利要求范围所做的等同变换与修饰，均应属于本发明权利要求的涵盖范围。

Claims (10)

  1. 一种电子烟控制方法，其特征在于，包括以下步骤：
    S1、通过阻值检测单元获取电子烟的启动单元首次触发时发热体的阻值，并存储为发热体初始阻值；
    S2、获取所述发热体的目标温度，以根据所述初始阻值获取所述发热体的目标阻值；
    S3、获取所述启动单元每次触发后的第一预设时间对应的第一实时阻值，以计算所述发热体在所述第一预设时间内的阻值变化，并确认所述阻值变化是否大于第一预设值；是，则关断所述发热体的输入功率，否，则执行步骤S4；
    S4、通过所述阻值检测单元依照预设规则获取所述发热体的实时阻值，以控制所述发热体的输入功率以使所述发热体的实时阻值为所述目标阻值。
  2. 根据权利要求1所述的电子烟控制方法，其特征在于，所述方法还包括：
    S11、在所述启动单元停止触发后，通过所述阻值检测单元获取第二预设时间内每间隔第三预设时间的所述发热体的第二实时阻值，判定所述第二实时阻值是否大于第二预设值；
    S12、若是，则判定所述电子烟已经被更新，获取紧随所述第二实时阻值且小于所述预设阻值的第三实时阻值并更新为所述初始阻值，执行所述步骤S2；
    S13、若否，则判定所述电子烟未被更新，所述初始阻值不变，执行所述步骤S2。
  3. 根据权利要求2所述的电子烟控制方法，其特征在于，所述方法还包括：
    S10、记录所述启动单元停止触发时间，当所述停止触发时间大于所述第二预设时间，再次触发所述启动单元，则判定为所述启动单元首次触发。
  4. 根据权利要求3所述的电子烟控制方法，其特征在于，所述方法还包括：
    当所述停止触发时间大于所述第二预设时间时，休眠所述电子烟，在所述电子烟为休眠状态时触发所述启动单元，则判定为所述启动单元首次触发；和/或
    在所述启动单元触发后持续检测所述发热体的实时阻值，并判定所述实时阻值是否大于第三预设值；是，则关断所述发热体的输入功率。
  5. 一种电子烟，其特征在于，包括电池杆、雾化器和设于所述雾化器内的发热体，以及设于所述电池杆内的供电单元、启动单元、微处理器、功率控制单元和阻值检测单元；
    所述启动单元连接所述微处理器，用于发送启动信号至所述微处理器，以触发所述微处理器工作；
    所述阻值检测单元连接所述发热体和所述微处理器，用于检测所述启动单元工作过程中所述发热体的实时阻值并发送至所述微处理器；
    所述微处理器用于存储所述启动单元首次触发时所述发热体的实时阻值为初始阻值，并根据所述发热体的目标温度和所述初始阻值获取发热体加热后的目标阻值；
    所述微处理器连接所述功率控制单元，用于根据所述发热体的实时阻值和目标阻值输出控制信号至所述功率控制单元以控制所述发热体的输入功率。
  6. 根据权利要求5所述的电子烟，其特征在于，所述阻值检测单元包括第一采样电路、与所述第一采样电路连接的开关电路；
    所述开关电路包括场效应管Q5、场效应管Q6和三极管Q7，所述场效应管Q5的D极与所述场效应管Q6的D极连接、并经电阻R12与所述三极管Q7的C极连接，所述场效应管Q5的G极和所述场效应管Q6的G极均与所述所述三极管Q7的C极连接，所述场效应管Q6的S极经电阻R13与所述发热体的第一端连接，所述三接管Q7的B极经电阻R11与所述微处理器连接；
    所述第一采样电路包括采样电阻R14，所述采样电阻R14的一端与所述三极管Q7的E极连接、同时经电容C9与所述微处理连接，所述采样电阻R14的另一端与所述发热体的第二端连接、同时经电阻R15与所述微处理器连接。
  7. 根据权利要求5所述的电子烟，其特征在于，所述阻值检测单元包括稳压单元和与所述稳压单元连接的第二采样单元；
    所述稳压单元包括电源芯片U5，所述电源芯片U5经过电阻R11与所述发热体的第一端连接；
    所述第二采样单元包括采样电阻R12，所述电阻R12的一端与所述发热体的第一端连接，所述采样电阻R12的另一端与所述微处理器连接，并经过电容C10接地且与所述发热体的第二端连接。
  8. 根据权利要求6或7所述的电子烟，其特征在于，所述启动单元包括开关K和场效应管Q1，所述开关K的第一管脚连接电源输入，所述开关K的第二管脚连接所述场效应管Q1的G极，所述场效应管Q1的S极连接所述微处理器，所述场效应管Q1的D极连接所述开关K的第一管脚并接地。
  9. 根据权利要求8所述的电子烟，其特征在于，所述供电单元包括电池、与所述电池连接的充电输入单元、稳压单元和电池电压检测单元；
    所述充电输入单元包括连接器JF和充电管理芯片U1，所述充电管理芯片U1的输入管脚与所述连接器JF的第一管脚连接，所述充电管理芯片U1的输出管脚与所述电池连接；和/或
    所述电池电压检测单元包括三极管Q4和场效应管Q3，所述场效应管Q3的S极连接所述电池，所述场效应管Q3的D极经电阻R8和R9与所述微处理器连接，所述电阻R8经电阻R10接地，所述三极管Q4的C极经电阻R7与所述电池连接，所述三极管Q4的B极经电阻R6与所述微处理器连接，所述三接管Q4的E极接地；和/或
    所述稳压单元包括稳压芯片U3，所述稳压芯片U3的输入端连接所述电池，所述稳压芯片U3的输出端连接所述微处理器。
  10. 根据权利要求8所述的电子烟，其特征在于，所述功率控制单元包括逻辑芯片U4和场效应管Q2；所述逻辑芯片U4的第二管脚连接所述微处理器，所述逻辑芯片U4的第4管脚连接所述场效应管Q2的G极，所述场效应管Q2的D极连接所述发热体的第一端，所述场效应管Q2的S极连接所述电池。
     
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