WO2021184965A1 - 通过触控压力传感器控制预热的电子烟及其预热方法 - Google Patents

通过触控压力传感器控制预热的电子烟及其预热方法 Download PDF

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Publication number
WO2021184965A1
WO2021184965A1 PCT/CN2021/073852 CN2021073852W WO2021184965A1 WO 2021184965 A1 WO2021184965 A1 WO 2021184965A1 CN 2021073852 W CN2021073852 W CN 2021073852W WO 2021184965 A1 WO2021184965 A1 WO 2021184965A1
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WIPO (PCT)
Prior art keywords
touch pressure
pin
central control
signal terminal
control unit
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PCT/CN2021/073852
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English (en)
French (fr)
Inventor
林光榕
郑贤彬
张夕勇
Original Assignee
深圳市康泓威科技有限公司
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Application filed by 深圳市康泓威科技有限公司 filed Critical 深圳市康泓威科技有限公司
Publication of WO2021184965A1 publication Critical patent/WO2021184965A1/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
    • 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
    • A24F40/53—Monitoring, e.g. fault detection

Definitions

  • the present invention relates to the technical field of electronic cigarettes, in particular to an electronic cigarette that controls preheating through a touch pressure sensor and a preheating method thereof.
  • the function of the electronic cigarette is to heat the e-liquid when the user smokes, and the e-liquid becomes smoke after being heated, so that the smoking user can inhale the smoke with the smell of cigarettes. Since the liquid smoke is smoked through heat instead of burning with an open flame, which prevents users from inhaling a large amount of harmful substances produced by the burning of tobacco products due to the burning of an open flame, the use of electronic cigarettes for smoking is widely used.
  • Existing electronic cigarettes generally include a casing, an atomizing device, a battery, and a control circuit board.
  • the atomizing device stores smoke liquid and is equipped with a heating element for atomizing the smoke liquid. When heating and atomizing, the inside of the atomizing device The smoke liquid penetrates or conducts to the heating element.
  • Existing e-cigarettes may use e-cigarettes or liquid medicines with large viscosity and poor fluidity.
  • the e-liquid or e-liquid, and liquid substances containing drugs are likely to increase in viscosity and decrease in fluidity under low temperature conditions, so that the e-liquid or liquid is not easy to penetrate or flow to the heater for atomization, causing the user to just start the e-cigarette , It is difficult to effectively and smoothly suck out smoke, which brings a bad smoking experience to users. Therefore, in this case, the existing electronic cigarette lacks a device that can preheat the liquid smoke or the preheating control of the liquid medicine when starting to smoke. The liquid substance is preheated so that the smoke can be easily sucked out.
  • the purpose of the present invention is to provide an electronic cigarette that controls preheating through a touch pressure sensor.
  • the touch pressure sensor of the electronic cigarette can detect the magnitude of the user's finger touch pressure on the electronic cigarette, so that the central control unit can make the preheating required. Judging, thereby controlling the power output unit to output power to the heating element to preheat the smoke liquid.
  • Another object of the present invention is to provide a preheating method of an electronic cigarette that is controlled to be preheated by a touch pressure sensor.
  • the technical solution of the present invention is to control the preheated electronic cigarette through a touch pressure sensor, including a casing, an atomizing device, a battery, and a control circuit board.
  • the atomizing device includes a heating element, and the heating element is used to Liquid heating and atomizing into electronic cigarette, characterized in that: the control circuit board is provided with a central control unit, and a touch pressure sensor, a power output unit and a system power supply unit electrically connected to the central control unit, and the touch pressure sensor
  • the control circuit board is provided with a central control unit, and a touch pressure sensor, a power output unit and a system power supply unit electrically connected to the central control unit, and the touch pressure sensor
  • the outer surface is exposed on the surface of the housing, the battery supplies power to the central control unit through the system power supply unit, and supplies power to the heating element through the power output unit, and the central control unit controls the power
  • the output unit adjusts the power of the heating element during operation.
  • the touch pressure sensor is used to detect the touch pressure when the user touches it and transmit the detected touch pressure detection value to the central control unit.
  • the central control unit is triggered to send a warm-up control signal to the power output unit, and the power output unit
  • the heating element supplies power for preheating.
  • control circuit board is further provided with an environmental temperature detection unit electrically connected to the central control unit, the environmental temperature detection unit detects the environmental temperature of the electronic cigarette and transmits the detection value of the environmental temperature to the central control A unit, when the touch pressure detection value reaches the preset touch pressure value or the number of touches per unit time reaches the preset number of times, and when the detection value of the ambient temperature is less than the preset ambient temperature value, the central control unit is triggered A preheating control signal is sent to the power output unit, and the power output unit preheats the power supply of the heating element.
  • the surface of the housing is further provided with a display unit electrically connected to the central control unit, and the display unit is used to display various working parameters and warning information when the electronic cigarette is working.
  • control circuit board is further provided with a resistance detection unit electrically connected to the heating element and the central control unit and used to detect the resistance of the heating element, and the resistance detection unit detects the heating element in real time.
  • the detection value of the resistance value is fed back to the central control unit, and the central control unit adjusts the power output of the power output unit according to the detection value of the resistance value to keep stable.
  • the central control unit includes a first chip, the first chip is provided with 28 pins, wherein the third pin is connected to the power supply signal terminal VDD, the fourth pin is grounded, and the fifth pin is connected to the power supply.
  • the reset signal terminal NRST, the 8th pin is connected to the first voltage signal terminal R-DET of the heating element, the 9th pin is connected to the second voltage signal terminal I-DET of the heating element, and the 10th pin is connected to the clock signal terminal SCL.
  • the 11 pin is connected to the temperature analog signal terminal NTC-DET, the 12th pin is connected to the microphone signal terminal MIC, the 13th pin is connected to the gravity sensor data signal terminal SDA, and the 14th pin is connected to the resistance measurement enable signal terminal R-DET- EN, the 15th pin is connected to the battery voltage signal terminal BATTERY-VOLTAGE, the 16th pin is connected to the red indicator signal terminal LED-RED, the 18th pin is connected to the blue indicator signal terminal LED-BLUE, and the 19th pin is connected to green Indicator signal terminal LED-GREEN, the 20th pin is connected to the first programming signal terminal SWDIO, the 21st pin is connected to the second programming signal terminal SWCLK, and the 23rd pin is connected to the touch pressure data communication negative signal terminal S -, the 23rd pin is connected to the touch pressure data communication positive signal terminal S+, the 26th pin is connected to the temperature detection control signal terminal NTC-SW, and the 28th pin is connected to the power control signal terminal PWM-EN.
  • the touch pressure sensor includes a second chip, and the second chip is provided with four pins, wherein the first pin is connected to the touch pressure data communication negative signal terminal S-, and the second pin is connected to the touch Pressure data communication positive signal terminal S+, the third pin is grounded, and the fourth pin is connected to the power signal terminal VDD.
  • a resistor R 2 is connected between the first pin and the fourth pin, and the second pin is connected to the fourth pin.
  • a resistor R 8 is connected between the pins, a filter capacitor C4 is also connected to the fourth pin, and the other end of the filter capacitor C4 is grounded.
  • the power output unit includes a first MOS tube and a second MOS tube, both of which include 8 pins, wherein the first, second, sixth, seventh, and eighth pins are combined into a D pole, and the third pin It is the G pole, the 4th and 5th pins are combined into the S pole, the D pole of the second MOS tube is connected to the output voltage signal terminal PWM-OUT of the heating element, and the D pole of the second MOS tube is also connected to the resistor R 3 Connect the second voltage signal terminal I-DET of the heating element.
  • the second voltage signal terminal I-DET of the heating element is connected in parallel with the resistor R 33 and the capacitor C 2 and then grounded.
  • the D pole of the first MOS tube is connected to the resistor R 11 and then connected The first voltage signal terminal R-DET of the heating element, the first voltage signal terminal R-DET of the heating element is connected in parallel with the resistor R 24 and the capacitor C 1 and then grounded, the D pole of the first MOS tube and the second MOS tube A resistor R 5 is also connected between the D poles ; a resistor R 7 is connected in series between the G pole and the S pole of the second MOS tube, the G pole and the S pole of the first MOS tube are connected in series with a resistor R 1 , and the second MOS tube
  • the S pole of the tube is directly connected to the S pole of the first MOS tube and connected to the power supply signal BAT+, the G pole of the second MOS tube is connected to the power control signal terminal PWM-EN, and the G pole of the first MOS tube is connected to the resistance measurement enable signal End R-DET-EN.
  • the ambient temperature detection unit includes a temperature sensor, and the temperature sensor is provided with two pins, wherein the first pin is connected to the temperature detection control signal terminal NTC-SW, and the second pin is connected to the temperature analog signal terminal NTC- the DET, and the second pin is also connected to one end of a resistor R and a capacitor C 17 of the end 11, the other end of the resistor R 17 is connected to the VDD terminal of the power supply signal, the capacitor C 11 to the other end.
  • control circuit board is further provided with a gravity sensing sensor, which is used to detect the smoking action of the user and send the action information to the central control unit, when the detection value of the ambient temperature is less than the preset ambient temperature
  • the central control unit controls the power output unit to preheat the power supply of the heating element when the touch pressure detection value does not reach the preset touch pressure value.
  • the gravity sensor includes a third chip, and the third chip is provided with 12 pins, wherein the first pin is connected to the clock signal terminal SCL, the fourth pin is connected to the gravity sensor data signal terminal SDA, and the sixth pin is connected to the gravity sensor data signal terminal SDA.
  • a ground pin, a ground pin 8, pin 9 and pin 10 are commonly connected to the VDD terminal of the power supply signal, a first pin is also connected to the other end of the resistor R 9 and the other end of the resistor R 9 is connected to the power supply signal terminal VDD, the fourth pin is also connected to one end, the other end of the resistor R 10 of resistor R 10 is connected to the power supply terminal VDD signal, the power supply terminal VDD signal the capacitor C is also connected at one end 7, the other end of the capacitor C 7.
  • Another technical solution of the present invention is to control the preheating method of the preheated electronic cigarette through the touch pressure sensor, which includes the following steps:
  • Parameter initialization including initialization of touch pressure sensor parameters, initialization of touch pressure sensor warm-up parameters by the central control unit, and initialization of warm-up temperature conditions by the central control unit;
  • the ambient temperature detection unit reads the ambient temperature detection value and transmits it to the central control unit;
  • the central control unit judges whether the detection value of the touch environment temperature reaches the preset temperature value, if yes, then go to the next step, if not, then go to step (10);
  • the touch pressure sensor detects the touch pressure and transmits the detection value of the touch pressure to the central control unit;
  • the central control unit judges whether the detection value of touch pressure reaches the preset value of touch pressure or whether the number of touches per unit time reaches the preset number of times, if yes, go to the next step, if not, go back to step (4) );
  • the central control unit controls the output power of the power output unit to preheat the heating element, so that the detection value of the preheating temperature reaches the preset value of the preheating temperature;
  • Parameter initialization including initialization of touch pressure sensor parameters, initialization of touch pressure sensor warm-up parameters by the central control unit, initialization of touch pressure sensor warm-up parameters by the central control unit, and initialization of warm-up temperature conditions by the central control unit ;
  • the ambient temperature detection unit reads the ambient temperature detection value and transmits it to the central control unit;
  • the central control unit judges whether the detection value of the touch environment temperature is lower than the preset environment temperature value, if yes, go to the next step, if not, go to step (12);
  • the touch pressure sensor detects the touch pressure and transmits the detection value of the touch pressure to the central control unit;
  • the central control unit judges whether the touch pressure detection value has reached the preset value of touch pressure or whether the number of touches per unit time has reached the preset number of times, if yes, go to step (11), if not, go to the next step;
  • the gravity sensor detects the user's smoking action and sends a signal to the central control unit;
  • the central control unit judges whether the gravity sensor detects the smoking action, if it is, then go to the next step, if not, go back to step (4);
  • the central control unit controls the output power of the power output unit to preheat the heating element, so that the detection value of the preheating temperature reaches the preset value of the preheating temperature;
  • the present invention is provided with an environmental temperature detection unit and a touch pressure sensor.
  • the real-time temperature of the environment is detected by the environmental temperature detection unit, and then automatically compares to confirm whether preheating is required, and then the touch pressure sensor detects the magnitude of the user's finger touch pressure on it ,
  • the central control unit In order to trigger the central control unit to send a preheating control signal, thereby controlling the output power of the power output unit to preheat the smoke liquid to the heating element.
  • the preheating temperature reaches the preset value or the heating duration reaches the preset duration, the electronic cigarette Enter a smoking state.
  • the user can perform manual touch operations to warm up the e-cigarette
  • the rear smoke liquid easily penetrates or flows to the atomization device of the electronic cigarette for atomization, so that the electronic cigarette is easily sucked out of the smoke even at low temperatures.
  • Fig. 1 is a perspective schematic diagram of an electronic cigarette controlled by a touch pressure sensor to preheat according to the present invention
  • FIG. 2 is a schematic front view of an electronic cigarette controlled by a touch pressure sensor to preheat according to the present invention
  • FIG. 3 is a functional block diagram of an electronic cigarette controlled by a touch pressure sensor to warm up according to the present invention
  • FIG. 5 is a circuit connection structure diagram of the second chip of the touch pressure sensor of the present invention.
  • Fig. 6 is a circuit connection structure diagram of the power output unit of the present invention.
  • Figure 7 is a circuit connection structure diagram of the temperature sensor of the present invention.
  • Fig. 8 is a circuit connection structure diagram of the gravity sensor sensor of the present invention.
  • Figure 9 is the first flow chart of the preheating method of the present invention.
  • Figure 10 is the second flow chart of the preheating method of the present invention.
  • the power-on state of the electronic cigarette of the present invention refers to that most of the control circuits and components of the electronic cigarette are in a power-on state
  • the standby smoking state of the electronic cigarette of the present invention refers to that the control circuits are all powered or in a standby state.
  • the heating element is also ready to be energized, waiting for the user to smoke and emit smoke.
  • an electronic cigarette that controls preheating through a touch pressure sensor of the present invention includes a casing 1, an atomization device 2, a battery 3, and a control circuit board 4.
  • the atomization device 2 includes a The smoke liquid 6 is heated and atomized into the heating element 21 of the electronic cigarette, and the surface of the casing is provided with a touch panel 5, and the touch panel 5 is a part of the touch pressure sensor 41.
  • control circuit board 4 is provided with a central control unit 40, a touch pressure sensor 41 electrically connected to the central control unit 40, an ambient temperature detection unit 42, a power output unit 43, and a system power supply unit 44.
  • the outer surface of the control pressure sensor 41 is exposed on the surface of the housing 1.
  • the battery 3 supplies power to the central control unit 40 through the system power supply unit 44, and supplies power to the heating element 21 through the power output unit 43.
  • the central control unit 40 controls the power output unit 43 to adjust The power of the heating element 21 during operation
  • the ambient temperature detection unit 42 detects the ambient temperature of the electronic cigarette and transmits the ambient temperature detection value to the central control unit 40
  • the touch pressure sensor 41 is used to detect when the user touches it with a finger And transmit the detected touch pressure detection value to the central control unit 40.
  • the ambient temperature detection value is less than the preset ambient temperature value
  • the touch pressure detection value reaches the preset touch pressure value or the number of touches per unit time reaches the preset number of times
  • this condition can trigger the central control unit 40 to output power
  • the unit 43 sends a preheating control signal, and the power output unit 43 supplies power to the heating element 21 for preheating.
  • the preheating temperature reaches the preset value of the preheating temperature or the heating duration reaches the preset duration, the preheating is stopped.
  • the ambient temperature detection unit 42 can detect the warm-up temperature.
  • the surface of the housing 1 is also provided with a display unit 45 electrically connected to the central control unit 40, and the display unit 45 is used to display various working parameters and warning information when the electronic cigarette is working.
  • the control circuit board is also provided with a resistance detection unit 46 electrically connected to the heating element 21 and the central control unit 40 and used to detect the resistance of the heating element 21.
  • the resistance detection unit 46 will The resistance value of the heating element detected in real time is fed back to the central control unit 40.
  • the central control unit 40 can also adjust the power output unit 43 according to the resistance value detection value, and the power output unit 43 maintains a stable power output for the heating element 21.
  • the resistance of the heating element generally changes with temperature changes, and the resistance changes and the power also changes, so the amount of smoke inhaled will change, and the amount of smoke will be unstable.
  • the central control unit 40 can adjust the power output according to the detection value of the resistance value to ensure that the power output is stable.
  • the central control unit 40 includes a first chip MCU.
  • the first chip MCU has 28 pins. Among them, the third pin is connected to the power supply signal terminal VDD, the VDD voltage can be 2.5V, and the fourth pin Grounded, the 5th pin is connected to the power-on reset signal terminal NRST, the 8th pin is connected to the first voltage signal terminal R-DET of the heating element, and the 9th pin is connected to the second voltage signal terminal I-DET of the heating element.
  • the pin is connected to the clock signal terminal SCL, the 11th pin is connected to the temperature analog signal terminal NTC-DET, the 12th pin is connected to the microphone signal terminal MIC, the 13th pin is connected to the gravity sensing data signal terminal SDA, and the 14th pin is connected to the measurement Resistor enable signal terminal R-DET-EN, the 15th pin is connected to the battery voltage signal terminal BATTERY-VOLTAGE, the 16th pin is connected to the red indicator signal terminal LED-RED, the 18th pin is connected to the blue indicator signal terminal LED -BLUE, the 19th pin is connected to the green indicator signal terminal LED-GREEN, the 20th pin is connected to the first programming signal terminal SWDIO, the 21st pin is connected to the second programming signal terminal SWCLK, and the 23rd pin is connected Contact control pressure data communication negative signal terminal S-, the 23rd pin is connected to the touch pressure data communication positive signal terminal S+, the 26th pin is connected to the temperature detection control signal terminal NTC-SW, the 28th pin is connected to the power
  • the power-on reset signal terminal NRST is used to reset the relevant parameters when the chip is powered on
  • the temperature analog signal terminal NTC-DET is used to receive the temperature detection signal of the ambient temperature detection unit
  • the microphone signal terminal MIC is used to receive the microphone induction when smoking.
  • the first voltage signal terminal R-DET and the second voltage signal terminal I-DET of the heating element are used to receive the voltage or resistance signal of the heating element
  • touch Control pressure data communication negative signal terminal S-, touch pressure data communication positive signal terminal S+ is used to receive the detection signal of the touch pressure sensor
  • the power control signal terminal PWM-EN is used to send preheating or power adjustment to the power output unit Signal.
  • the touch pressure sensor includes a second chip U 2 , the second chip U 2 is provided with four pins, of which the first pin is connected to the negative signal terminal S- for touch pressure data communication, and the second pin Connect the touch pressure data communication positive signal terminal S+, the third pin is grounded, and the fourth pin is connected to the power signal terminal VDD.
  • a resistor R 2 is connected between the first pin and the fourth pin, and the second pin
  • a resistor R 8 is connected to the fourth pin
  • a filter capacitor C 4 is also connected to the fourth pin, and the other end of the filter capacitor C 4 is grounded.
  • the touch pressure sensor transmits a touch pressure detection signal to the first chip MCU through the touch pressure data communication negative signal terminal S- and the touch pressure data communication positive signal terminal S+.
  • the power output unit includes a first MOS tube Q 1 and a second MOS tube Q 2 , both of which include 8 pins, of which the first, second, sixth, seventh, and eighth pins are combined into D poles.
  • the third pin is the G pole
  • the fourth and fifth pins are combined into the S pole
  • the D pole of the second MOS tube Q 2 is connected to the output voltage signal terminal PWM-OUT of the heating element
  • the resistor R 3 is connected to the second voltage signal terminal I-DET of the heating element.
  • the second voltage signal terminal I-DET of the heating element is connected in parallel with the resistor R 33 and the capacitor C 2 and then grounded.
  • the D pole of the first MOS tube is connected
  • the resistor R 11 is connected to the first voltage signal terminal R-DET of the heating element, and the first voltage signal terminal R-DET of the heating element is connected in parallel with the resistor R 24 and the capacitor C 1 and then grounded.
  • the D pole of the first MOS transistor Q 1 is connected to the R 5 is also connected to a resistor between the second electrode 2 MOS transistor Q D; a second MOS transistor Q G 2 and S poles is connected in series between the resistor R 7, a first MOS transistor Q G 1 and S poles of A resistor R 1 is connected in series, the S pole of the second MOS transistor Q 2 is directly connected to the S pole of the first MOS transistor Q 1 and connected to the battery positive signal BAT+, and the G pole of the second MOS transistor Q 2 is connected to the power control signal terminal PWM -EN, a first MOS transistor Q G 1 is connected to the enable signal terminal of sense resistor R-DET-EN.
  • the ambient temperature detection unit includes a temperature sensor NTC.
  • the temperature sensor NTC has two pins. The first pin is connected to the temperature detection control signal terminal NTC-SW, and the second pin is connected to the temperature analog signal terminal. NTC-DET, the second pin is also connected to one end of resistor R 17 and capacitor C 11 at one end and the other end of the resistor R 17 is connected to the VDD terminal of the power supply signal, the capacitor C 11 to the other end.
  • a gravity sensor 47 is also provided on the control circuit board.
  • the gravity sensor 47 is used to detect the smoking action of the user and send action information to the central control unit 40.
  • the central control unit 40 controls the power output unit 43 to control the heating element 21 Power supply for preheating.
  • the gravity sensor includes a third chip U 3 , the third chip U 3 has 12 pins, the first pin is connected to the clock signal terminal SCL, and the fourth pin is connected to the gravity sensor data signal terminal SDA , the sixth pin is grounded, the ground pin 8, pin 9 and pin 10 are commonly connected to the VDD terminal of the power supply signal, a first pin is also connected to the other end of the resistor R 9 and the other end of the resistor R 9 is connected power signal to the terminal VDD, the fourth pin is also connected to one end, the other end of the resistor R 10 of resistor R 10 is connected to the power supply terminal VDD signal, the power supply signal VDD terminal end of the capacitor C 7 is also connected, the other end of the capacitor C 7, .
  • the third chip U 3 of the gravity sensor transmits the gravity sensor signal to the first chip MCU through the gravity sensor data signal terminal SDA.
  • the present invention controls the preheating method of the preheated electronic cigarette through the touch pressure sensor, including the following steps:
  • Parameter initialization including the initialization of touch pressure sensor parameters, the central control unit, namely the first chip MCU, to initialize the touch pressure sensor warm-up parameters, and the first chip MCU to initialize the warm-up temperature conditions;
  • the ambient temperature detection unit reads the ambient temperature detection value and transmits it to the first chip MCU;
  • the MCU of the first chip judges whether the detection value of the touch environment temperature reaches the preset temperature value, if yes, go to the next step, if not, go to step (10);
  • the touch pressure sensor detects the touch pressure, and transmits the touch pressure detection value to the first chip MCU;
  • the first chip MCU judges whether the touch pressure detection value reaches the preset value of touch pressure or whether the number of touches per unit time reaches the preset number of times, if yes, go to the next step, if not, go back to the step ( 4);
  • the first chip MCU controls the output power of the power output unit to preheat the heating element, so that the preheating temperature detection value reaches the preheating temperature preset value;
  • another method for preheating an electronic cigarette controlled by a touch pressure sensor includes the following steps:
  • Parameter initialization including the initialization of touch pressure sensor parameters, the first chip MCU to initialize the touch pressure sensor warm-up parameters, the first chip MCU to initialize the touch pressure sensor warm-up parameters, and the first chip MCU to warm-up temperature Initialization of conditions;
  • the ambient temperature detection unit reads the ambient temperature detection value and transmits it to the first chip MCU;
  • the first chip MCU judges whether the detection value of the touch environment temperature is lower than the preset environment temperature value, if yes, go to the next step, if not, go to step (12);
  • the touch pressure sensor detects the touch pressure, and transmits the touch pressure detection value to the first chip MCU;
  • the first chip MCU judges whether the touch pressure detection value reaches the preset value of touch pressure or whether the number of touches per unit time reaches the preset number of times, if yes, go to step (11), if not, go to Next step;
  • the gravity sensor detects the user's smoking action and sends a signal to the first chip MCU;
  • the first chip MCU judges whether the gravity sensor detects a smoking action, if it is, go to the next step, if not, go back to step (4);
  • the first chip MCU controls the output power of the power output unit to preheat the heating element, so that the preheating temperature detection value reaches the preheating temperature preset value;

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Abstract

触控压力传感器（41）控制预热的电子烟及其预热方法，该电子烟包括外壳（1）、雾化装置（2）、电池（3）和控制电路板（4），雾化装置（2）包括发热元件（21），控制电路板（4）上设有中心控制单元（40）、触控压力传感器（41）、环境温度检测单元（42）、功率输出单元（43）和系统供电单元（44），触控压力传感器（41）外表面设于外壳（1）表面，中心控制单元（40）控制功率输出单元（43）调节发热元件（21）工作时的功率，环境温度检测单元（42）对电子烟的环境温度进行检测并将环境温度检测值传送给中心控制单元（40），触控压力传感器（41）用于检测触控压力大小并将触控压力检测值传送给中心控制单元（40）；触控压力传感器（41）可以检测用户手指对其触控压力的大小或触控次数，以便中心控制单元（40）控制功率输出单元（43）输出功率给发热元件（21）对烟液进行预热。

Description

通过触控压力传感器控制预热的电子烟及其预热方法 技术领域
本发明涉及一种电子烟具的技术领域，特别涉及一种通过触控压力传感器控制预热的电子烟及其预热方法。
 背景技术
电子烟，其作用是用户吸烟时将烟液进行加热，烟液受热后变成烟雾，吸烟用户得以吸入具有香烟味道的烟雾。由于烟液是通过发热冒烟而不是明火燃烧，避免了用户吸入烟草制品因明火燃烧产生的大量有害物质，故使用电子烟进行吸烟得到广泛使用。
现有的电子烟，一般包括外壳、雾化装置、电池和控制电路板，雾化装置内储存有烟液，并设有雾化烟液的发热元件，加热雾化时，雾化装置内的烟液通过渗透或传导至发热元件。现有的电子烟，可能会使用到粘稠度较大、流动性不好的烟液或药液，或当电子烟处于冬季寒冷的季节或处于高海拔、高纬度的寒冷地区时，电子烟的烟液或烟油、含有药物的液体物质就容易在低温条件下粘度变大和流动性降低，以致烟液或药液不容易渗透或流动到加热器进行雾化，导致用户刚启用电子烟时，难以有效和顺畅地吸出烟雾，给用户带来不好的吸烟体验。因此，现有的电子烟在此情况下，在开始吸烟使用时，缺乏一种可先行预热烟液或药液的预热控制的装置，不能利用这种预热装置对烟液或含有药物的液体物质进行预热以便容易吸出烟雾。
 技术问题
本发明的目的是提供一种通过触控压力传感器控制预热的电子烟，该电子烟的触控压力传感器可以检测用户手指对其触控压力的大小，以便中心控制单元作出需要进行预热的判断，从而控制功率输出单元输出功率给发热元件对烟液进行预热。本发明的另一目的是提供一种通过触控压力传感器控制预热的电子烟的预热方法。
 技术解决方案
本发明的技术解决方案是，通过触控压力传感器控制预热的电子烟，包括外壳、雾化装置、电池和控制电路板，所述雾化装置包括发热元件，所述发热元件用于将烟液加热雾化成电子烟雾，其特征在于：所述控制电路板上设有中心控制单元、以及与中心控制单元电连接的触控压力传感器、功率输出单元和系统供电单元，所述触控压力传感器外表面露出设于所述外壳表面，所述电池通过所述系统供电单元给所述中心控制单元供电，且通过所述功率输出单元给所述发热元件供电，所述中心控制单元控制所述功率输出单元调节发热元件工作时的功率，所述触控压力传感器用于检测用户对其进行触控时的触控压力并将检测到的触控压力检测值传送给所述中心控制单元，当所述触控压力检测值达到预设触控压力值或单位时间内的触控次数达到预设次数时，触发中心控制单元向所述功率输出单元发出预热控制信号，所述功率输出单元对所述发热元件供电进行预热。
优选地，所述控制电路板上还设有与中心控制单元电连接的环境温度检测单元，所述环境温度检测单元对电子烟的环境温度进行检测并将环境温度检测值传送给所述中心控制单元，当所述触控压力检测值达到预设触控压力值或单位时间内的触控次数达到预设次数，且当所述环境温度检测值小于预设环境温度值时，触发中心控制单元向所述功率输出单元发出预热控制信号，所述功率输出单元对所述发热元件供电进行预热。
优选地，所述外壳表面还设有与所述中心控制单元电连接的显示单元，所述显示单元用于显示电子烟工作时的各种工作参数和警告信息。
优选地，所述控制电路板上还设有与所述发热元件及中心控制单元电连接并用于检测发热元件电阻阻值的阻值检测单元，所述阻值检测单元将实时检测到的发热元件的阻值检测值反馈给所述中心控制单元，所述中心控制单元根据阻值检测值调节所述功率输出单元的功率输出保持稳定。
优选地，所述中心控制单元包括第一芯片，所述第一芯片设有28个引脚，其中，第3引脚连接供电信号端VDD，第4引脚接地，第5引脚连接上电复位信号端NRST，第8引脚连接发热元件的第一电压信号端R-DET，第9引脚连接发热元件的第二电压信号端I-DET，第10引脚连接时钟信号端SCL，第11引脚连接温度模拟信号端NTC-DET，第12引脚连接咪头信号端MIC，第13引脚连接重力感应数据信号端SDA，第14引脚连接测电阻使能信号端R-DET-EN,第15引脚连接电池电压信号端BATTERY-VOLTAGE，第16引脚连接红色指示灯信号端LED-RED，第18引脚连接蓝色指示灯信号端LED-BLUE，第19引脚连接绿色指示灯信号端LED-GREEN，第20引脚连接第一程序烧录信号端SWDIO，第21引脚连接第二程序烧录信号端SWCLK，第23引脚连接触控压力数据通信负信号端S-，第23引脚连接触控压力数据通信正信号端S+，第26引脚连接温度检测控制信号端NTC-SW，第28引脚连接功率控制信号端PWM-EN。
优选地，所述触控压力传感器包括第二芯片，所述第二芯片设有四个引脚，其中第1引脚连接触控压力数据通信负信号端S-，第2引脚连接触控压力数据通信正信号端S+，第3引脚接地，第4引脚连接电源信号端VDD，同时，第1引脚与第4引脚之间连接有电阻R 2，第2引脚与第4引脚之间连接有电阻R 8，第4引脚同时连接有滤波电容C4，滤波电容C4另一端接地。
优选地，所述功率输出单元包括第一MOS管和第二MOS管，两者均包括8个引脚，其中第1、2、6、7、8引脚合并为D极，第3引脚为G极，第4、5引脚合并为S极，第二MOS管的D极连接所述发热元件的输出电压信号端PWM-OUT，第二MOS管的D极同时还连接电阻R 3后连接发热元件的第二电压信号端I-DET，所述发热元件的第二电压信号端I-DET并联电阻R 33和电容C 2后接地，第一MOS管的D极连接电阻R 11后连接发热元件的第一电压信号端R-DET，所述发热元件的第一电压信号端R-DET端并联电阻R 24和电容C 1后接地，第一MOS管的D极和第二MOS管的D极之间还连接有电阻R 5；所述第二MOS管的G极与S极之间串接电阻R 7，第一MOS管的G极与S极串接电阻R 1，第二MOS管的S极与第一MOS管的S极直接连接且与供电信号BAT+连接，第二MOS管的G极连接功率控制信号端PWM-EN，第一MOS管的G极连接测电阻使能信号端R-DET-EN。
优选地，所述环境温度检测单元包括温度传感器，所述温度传感器设有两个引脚，其中第1引脚连接温度检测控制信号端NTC-SW，第2引脚连接温度模拟信号端NTC-DET，所述第2引脚同时还连接电阻R 17的一端和电容C 11的一端，电阻R 17的另一端连接供电信号端VDD，电容C 11的另一端接地。
优选地，所述控制电路板上还设有重力感应传感器，所述重力感应传感器用于检测使用者的吸烟动作并发送动作信息给中心控制单元，当所述环境温度检测值小于预设环境温度值，及所述触控压力检测值未达到预设触控压力值，但重力感应传感器检测到吸烟动作时，中心控制单元控制所述功率输出单元对所述发热元件供电进行预热。
优选地，所述重力感应传感器包括第三芯片，所述第三芯片设有12个引脚，其中第1引脚连接时钟信号端SCL，第4引脚连接重力感应数据信号端SDA，第6引脚接地，第8引脚接地，第9引脚与第10引脚共同连接到电源信号端VDD，另第1引脚还连接电阻R 9的一端，电阻R 9的另一端连接到电源信号端VDD，第4引脚还连接电阻R 10的一端，电阻R 10的另一端连接到电源信号端VDD，电源信号端VDD还连接电容C 7的一端，电容C 7的另一端接地。
本发明的另一种技术方案是，通过触控压力传感器控制预热的电子烟的预热方法，包括以下步骤：
（1）参数初始化，包括触控压力传感器参数初始化、中心控制单元对触控压力传感器预热参数初始化、中心控制单元对预热温度条件的初始化；
（2）判断电子烟是否处于开机状态，如果是，则进入步骤（4），如果否，则进入下一步；
（3）进行开机操作；
（4）中心控制单元进入开机状态；
（5）环境温度检测单元读取环境温度检测值，并传送给中心控制单元；
（6）中心控制单元判断触控环境温度检测值是否达到预设温度值，如果是，则进入下一步，如果否，则进入步骤（10）；
（7）触控压力传感器检测触控压力，并将触控压力检测值传送给中心控制单元；
（8）中心控制单元判断触控压力检测值是否达到触控压力预设值或单位时间内的触控次数是否达到预设次数，如果是，则进入下一步，如果否，则返回步骤（4）；
（9）中心控制单元控制功率输出单元输出功率给发热元件进行预热，使预热温度检测值达到预热温度预设值；
（10）电子烟进入待机可吸烟状态。
本发明的又一种技术方案是，通过触控压力传感器控制预热的电子烟的预热方法，包括以下步骤：
（1）参数初始化，包括触控压力传感器参数初始化、中心控制单元对触控压力传感器预热参数初始化、中心控制单元对触控压力传感器预热参数初始化、中心控制单元对预热温度条件的初始化；
（2）判断电子烟是否处于开机状态，如果是，则进入步骤（4），如果否，则进入下一步；
（3）进行开机操作；
（4）中心控制单元进入开机状态；
（5）环境温度检测单元读取环境温度检测值，并传送给中心控制单元；
（6）中心控制单元判断触控环境温度检测值是否低于预设环境温度值，如果是，则进入下一步，如果否，则进入步骤（12）；
（7）触控压力传感器检测触控压力，并将触控压力检测值传送给中心控制单元；
（8）中心控制单元判断触控压力检测值是否达到触控压力预设值或单位时间内的触控次数是否达到预设次数，如果是，则进入步骤（11），如果否，则进入下一步；
（9）重力感应传感器检测用户的吸烟动作并传送信号给中心控制单元；
（10）中心控制单元判断重力感应传感器是否检测到吸烟动作，如果是，则进入下一步，如果否，则返回步骤（4）；
(11)中心控制单元控制功率输出单元输出功率给发热元件进行预热，使预热温度检测值达到预热温度预设值；
(12)电子烟进入待机可吸烟状态。
 有益效果
本发明设有环境温度检测单元和触控压力传感器，首先通过环境温度检测单元检测环境的实时温度后自动对比确认是否需要预热，然后通过触控压力传感器检测用户手指对其触控压力的大小，以便触发中心控制单元发出预热控制信号，从而控制功率输出单元输出功率给发热元件对烟液进行预热，预热至预热温度预设值时或加热时长达到预设时长时，电子烟进入可吸烟状态。这样即使电子烟处于冬季寒冷的季节或处于高海拔、高纬度的寒冷地区时，或电子烟的烟液粘稠度比较大时，用户可进行手动触控操作使电子烟进行预热，预热后烟液容易渗透或流动到电子烟的雾化装置进行雾化，以便电子烟在低温时也容易被吸出烟雾。
 附图说明
图1是本发明通过触控压力传感器控制预热的电子烟的透视示意图；
图2是本发明通过触控压力传感器控制预热的电子烟的正视示意图；
图3是本发明通过触控压力传感器控制预热的电子烟的功能框图；
图4是本发明中心控制单元第一芯片的电路连接结构图；
图5是本发明触控压力传感器第二芯片的电路连接结构图；
图6是本发明功率输出单元的电路连接结构图；
图7是本发明温度传感器的电路连接结构图；
图8是本发明重力感应传感器的电路连接结构图；
图9是本发明预热方法流程图一；
图10是本发明预热方法流程图二。
 本发明的最佳实施方式
本发明电子烟所述的开机状态，是指电子烟的大部分控制电路及元件都处于已通电状态，本发明电子烟所述的待机可吸烟状态是指控制电路都已通电或处于备用状态，且发热元件也已经准备好可以通电，等待用户吸烟而发出烟雾。
本发明下面将结合附图作进一步详述：
 实施例
如图1、图2所示，本发明一种通过触控压力传感器控制预热的电子烟，包括外壳1、雾化装置2、电池3和控制电路板4，雾化装置2包括用于将烟液6加热雾化成电子烟雾的发热元件21，外壳表面设有触控面板5，该触控面板5为触控压力传感器41的一部分。
如图3所示，控制电路板4上设有中心控制单元40、以及与中心控制单元40电连接的触控压力传感器41、环境温度检测单元42、功率输出单元43和系统供电单元44，触控压力传感器41外表面露出设于外壳1的表面，电池3通过系统供电单元44给中心控制单元40供电，且通过功率输出单元43给发热元件21供电，中心控制单元40控制功率输出单元43调节发热元件21工作时的功率，环境温度检测单元42对电子烟的环境温度进行检测并将环境温度检测值传送给中心控制单元40，触控压力传感器41用于检测用户对其进行手指触控时的触控压力大小并将检测到的触控压力检测值传送给中心控制单元40。当环境温度检测值小于预设环境温度值，且触控压力检测值达到预设触控压力值或单位时间内的触控次数达到预设次数时时，此条件可触发中心控制单元40向功率输出单元43发出预热控制信号，功率输出单元43对发热元件21供电进行预热。当预热温度达到预热温度预设值时或加热时长达到预设时长时，停止预热。环境温度检测单元42可以检测到预热温度。
如图2、图3所示，外壳1的表面还设有与中心控制单元40电连接的显示单元45，所述显示单元45用于显示电子烟工作时的各种工作参数和警告信息。
如图3所示，控制电路板上还设有与发热元件21及中心控制单元40电连接并用于检测发热元件21电阻阻值的阻值检测单元46，用户吸烟时，阻值检测单元46将实时检测到的发热元件的阻值检测值反馈给中心控制单元40，中心控制单元40根据阻值检测值也可以调节功率输出单元43，功率输出单元43对发热元件21维持稳定的功率输出。电子烟在吸烟过程中，发热元件的阻值一般会随着温度变化而产生变化，阻值变化而功率也将发生变化，这样吸出的烟雾量就会产生变化，烟雾量不稳定。为了维持吸烟过程中烟雾量的稳定，中心控制单元40根据阻值检测值可以调节功率输出确保功率输出稳定。
如图4所示，中心控制单元40包括第一芯片MCU，第一芯片MCU设有28个引脚，其中，第3引脚连接供电信号端VDD，VDD电压可为2.5V，第4引脚接地，第5引脚连接上电复位信号端NRST，第8引脚连接发热元件的第一电压信号端R-DET，第9引脚连接发热元件的第二电压信号端I-DET，第10引脚连接时钟信号端SCL，第11引脚连接温度模拟信号端NTC-DET，第12引脚连接咪头信号端MIC，第13引脚连接重力感应数据信号端SDA，第14引脚连接测电阻使能信号端R-DET-EN,第15引脚连接电池电压信号端BATTERY-VOLTAGE，第16引脚连接红色指示灯信号端LED-RED，第18引脚连接蓝色指示灯信号端LED-BLUE，第19引脚连接绿色指示灯信号端LED-GREEN，第20引脚连接第一程序烧录信号端SWDIO，第21引脚连接第二程序烧录信号端SWCLK，第23引脚连接触控压力数据通信负信号端S-，第23引脚连接触控压力数据通信正信号端S+，第26引脚连接温度检测控制信号端NTC-SW，第28引脚连接功率控制信号端PWM-EN。以上，上电复位信号端NRST用于芯片通电时有关参数的复位，温度模拟信号端NTC-DET用于接收环境温度检测单元的温度检测信号，咪头信号端MIC用于接收吸烟时咪头感应到吸气气流的开关信号以便触发功率输出单元输出功率开始吸烟，发热元件的第一电压信号端R-DET和第二电压信号端I-DET用于接收发热元件的电压或阻值信号，触控压力数据通信负信号端S-，触控压力数据通信正信号端S+用于接收触控压力传感器的检测信号，功率控制信号端PWM-EN用于向功率输出单元发出预热或功率调节的信号。
如图5所示，触控压力传感器包括第二芯片U 2，第二芯片U 2设有四个引脚，其中第1引脚连接触控压力数据通信负信号端S-，第2引脚连接触控压力数据通信正信号端S+，第3引脚接地，第4引脚连接电源信号端VDD，同时，第1引脚与第4引脚之间连接有电阻R 2，第2引脚与第4引脚之间连接有电阻R 8，第4引脚同时连接有滤波电容C 4，滤波电容C 4另一端接地。触控压力传感器通过触控压力数据通信负信号端S-和触控压力数据通信正信号端S+向第一芯片MCU传送触控压力检测信号。
如图6所示，功率输出单元包括第一MOS管Q 1和第二MOS管Q 2，两者均包括8个引脚，其中第1、2、6、7、8引脚合并为D极，第3引脚为G极，第4、5引脚合并为S极，第二MOS管Q 2的D极连接发热元件的输出电压信号端PWM-OUT，第二MOS管Q 2的D极同时还连接电阻R 3后连接发热元件的第二电压信号端I-DET，发热元件的第二电压信号端I-DET并联电阻R 33和电容C 2后接地，第一MOS管的D极连接电阻R 11后连接发热元件的第一电压信号端R-DET，发热元件的第一电压信号端R-DET端并联电阻R 24和电容C 1后接地，第一MOS管Q 1的D极和第二MOS管Q 2的D极之间还连接有电阻R 5；第二MOS管Q 2的G极与S极之间串接电阻R 7，第一MOS管Q 1的G极与S极串接电阻R 1，第二MOS管Q 2的S极与第一MOS管Q 1的S极直接连接且与电池正极信号BAT+连接，第二MOS管Q 2的G极连接功率控制信号端PWM-EN，第一MOS管Q 1的G极连接测电阻使能信号端R-DET-EN。
如图7所示，环境温度检测单元包括温度传感器NTC，温度传感器NTC设有两个引脚，其中，第1引脚连接温度检测控制信号端NTC-SW，第2引脚连接温度模拟信号端NTC-DET，第2引脚同时还连接电阻R 17的一端和电容C 11的一端，电阻R 17的另一端连接供电信号端VDD，电容C 11的另一端接地。
如图3所示，控制电路板上还设有重力感应传感器47，重力感应传感器47用于检测使用者的吸烟动作并发送动作信息给中心控制单元40。当环境温度检测值小于预设环境温度值，及触控压力检测值未达到预设触控压力值，但重力感应传感器检测到吸烟动作时，中心控制单元40控制功率输出单元43对发热元件21供电进行预热。
如图8所示，重力感应传感器包括第三芯片U 3，第三芯片U 3设有12个引脚，其中第1引脚连接时钟信号端SCL，第4引脚连接重力感应数据信号端SDA，第6引脚接地，第8引脚接地，第9引脚与第10引脚共同连接到电源信号端VDD，另第1引脚还连接电阻R 9的一端，电阻R 9的另一端连接到电源信号端VDD，第4引脚还连接电阻R 10的一端，电阻R 10的另一端连接到电源信号端VDD，电源信号端VDD还连接电容C 7的一端，电容C 7的另一端接地。重力感应传感器第三芯片U 3通过重力感应数据信号端SDA向第一芯片MCU传送重力感应信号。
如图9所示，本发明通过触控压力传感器控制预热的电子烟的预热方法，包括以下步骤：
（1）参数初始化，包括触控压力传感器参数初始化、中心控制单元即第一芯片MCU对触控压力传感器预热参数初始化、第一芯片MCU对预热温度条件的初始化；
（2）判断电子烟是否处于开机状态，如果是，则进入步骤（4），如果否，则进入下一步；
（3）进行开机操作；
（4）第一芯片MCU的第一芯片MCU进入开机状态；
（5）环境温度检测单元读取环境温度检测值，并传送给第一芯片MCU；
（6）第一芯片MCU判断触控环境温度检测值是否达到预设温度值，如果是，则进入下一步，如果否，则进入步骤（10）；
（7）触控压力传感器检测触控压力，并将触控压力检测值传送给第一芯片MCU；
（8）第一芯片MCU判断触控压力检测值是否达到触控压力预设值或单位时间内的触控次数是否达到预设次数，如果是，则进入下一步，如果否，则返回步骤（4）；
（9）第一芯片MCU控制功率输出单元输出功率给发热元件进行预热，使预热温度检测值达到预热温度预设值；
（10）电子烟进入待机可吸烟状态。
如图10所示，本发明通过触控压力传感器控制预热的电子烟的另一预热方法，包括以下步骤：
（1）参数初始化，包括触控压力传感器参数初始化、第一芯片MCU对触控压力传感器预热参数初始化、第一芯片MCU对触控压力传感器预热参数初始化、第一芯片MCU对预热温度条件的初始化；
（2）判断电子烟是否处于开机状态，如果是，则进入步骤（4），如果否，则进入下一步；
（3）进行开机操作；
（4）第一芯片MCU进入开机状态；
（5）环境温度检测单元读取环境温度检测值，并传送给第一芯片MCU；
（6）第一芯片MCU判断触控环境温度检测值是否低于预设环境温度值，如果是，则进入下一步，如果否，则进入步骤（12）；
（7）触控压力传感器检测触控压力，并将触控压力检测值传送给第一芯片MCU；
（8）第一芯片MCU判断触控压力检测值是否达到触控压力预设值或单位时间内的触控次数是否达到预设次数，如果是，则进入步骤（11），如果否，则进入下一步；
（9）重力感应传感器检测用户的吸烟动作并传送信号给第一芯片MCU；
（10）第一芯片MCU判断重力感应传感器是否检测到吸烟动作，如果是，则进入下一步，如果否，则返回步骤（4）；
（11）第一芯片MCU控制功率输出单元输出功率给发热元件进行预热，使预热温度检测值达到预热温度预设值；
（12）电子烟进入待机可吸烟状态。
 工业实用性
以上所述仅为本发明的较佳实施例，凡依本发明权利要求范围所做的均等变化与修饰，皆应属本发明权利要求的涵盖范围。 

Claims (12)

  1. 一种通过触控压力传感器控制预热的电子烟，包括外壳、雾化装置、电池和控制电路板，所述雾化装置包括发热元件，所述发热元件用于将烟液加热雾化成电子烟雾，其特征在于：所述控制电路板上设有中心控制单元、以及与中心控制单元电连接的触控压力传感器、功率输出单元和系统供电单元，所述触控压力传感器外表面露出设于所述外壳表面，所述电池通过所述系统供电单元给所述中心控制单元供电，且通过所述功率输出单元给所述发热元件供电，所述中心控制单元控制所述功率输出单元调节发热元件工作时的功率，所述触控压力传感器用于检测用户对其进行触控时的触控压力并将检测到的触控压力检测值传送给所述中心控制单元，当所述触控压力检测值达到预设触控压力值或单位时间内的触控次数达到预设次数时，触发中心控制单元向所述功率输出单元发出预热控制信号，所述功率输出单元对所述发热元件供电进行预热。
  2. 根据权利要求1所述通过触控压力传感器控制预热的电子烟，其特征在于：所述控制电路板上还设有与中心控制单元电连接的环境温度检测单元，所述环境温度检测单元对电子烟的环境温度进行检测并将环境温度检测值传送给所述中心控制单元，当所述触控压力检测值达到预设触控压力值或单位时间内的触控次数达到预设次数，且当所述环境温度检测值小于预设环境温度值时，触发中心控制单元向所述功率输出单元发出预热控制信号，所述功率输出单元对所述发热元件供电进行预热。
  3. 根据权利要求1所述通过触控压力传感器控制预热的电子烟，其特征在于：所述外壳表面还设有与所述中心控制单元电连接的显示单元，所述显示单元用于显示电子烟工作时的各种工作参数和警告信息。
  4. 根据权利要求1所述通过触控压力传感器控制预热的电子烟，其特征在于：所述控制电路板上还设有与所述发热元件及中心控制单元电连接并用于检测发热元件电阻阻值的阻值检测单元，所述阻值检测单元将实时检测到的发热元件的阻值检测值反馈给所述中心控制单元，所述中心控制单元根据阻值检测值调节所述功率输出单元的功率输出保持稳定。
  5. 根据权利要求1所述通过触控压力传感器控制预热的电子烟，其特征在于：所述中心控制单元包括第一芯片，所述第一芯片设有28个引脚，其中，第3引脚连接供电信号端VDD，第4引脚接地，第5引脚连接上电复位信号端NRST，第8引脚连接发热元件的第一电压信号端R-DET，第9引脚连接发热元件的第二电压信号端I-DET，第10引脚连接时钟信号端SCL，第11引脚连接温度模拟信号端NTC-DET，第12引脚连接咪头信号端MIC，第13引脚连接重力感应数据信号端SDA，第14引脚连接测电阻使能信号端R-DET-EN,第15引脚连接电池电压信号端BATTERY-VOLTAGE，第16引脚连接红色指示灯信号端LED-RED，第18引脚连接蓝色指示灯信号端LED-BLUE，第19引脚连接绿色指示灯信号端LED-GREEN，第20引脚连接第一程序烧录信号端SWDIO，第21引脚连接第二程序烧录信号端SWCLK，第23引脚连接触控压力数据通信负信号端S-，第23引脚连接触控压力数据通信正信号端S+，第26引脚连接温度检测控制信号端NTC-SW，第28引脚连接功率控制信号端PWM-EN。
  6. 根据权利要求1所述通过触控压力传感器控制预热的电子烟，其特征在于：所述触控压力传感器包括第二芯片，所述第二芯片设有四个引脚，其中第1引脚连接触控压力数据通信负信号端S-，第2引脚连接触控压力数据通信正信号端S+，第3引脚接地，第4引脚连接电源信号端VDD，同时，第1引脚与第4引脚之间连接有电阻R 2，第2引脚与第4引脚之间连接有电阻R 8，第4引脚同时连接有滤波电容C 4，滤波电容C 4另一端接地。
  7. 根据权利要求1所述通过触控压力传感器控制预热的电子烟，其特征在于：所述功率输出单元包括第一MOS管和第二MOS管，两者均包括8个引脚，其中第1、2、6、7、8引脚合并为D极，第3引脚为G极，第4、5引脚合并为S极，第二MOS管的D极连接所述发热元件的输出电压信号端PWM-OUT，第二MOS管的D极同时还连接电阻R 3后连接发热元件的第二电压信号端I-DET，所述发热元件的第二电压信号端I-DET并联电阻R 33和电容C 2后接地，第一MOS管的D极连接电阻R 11后连接发热元件的第一电压信号端R-DET，所述发热元件的第一电压信号端R-DET端并联电阻R 24和电容C 1后接地，第一MOS管的D极和第二MOS管的D极之间还连接有电阻R 5；所述第二MOS管的G极与S极之间串接电阻R 7，第一MOS管的G极与S极串接电阻R 1，第二MOS管的S极与第一MOS管的S极直接连接且与供电信号BAT+连接，第二MOS管的G极连接功率控制信号端PWM-EN，第一MOS管的G极连接测电阻使能信号端R-DET-EN。
  8. 根据权利要求2所述通过触控压力传感器控制预热的电子烟，其特征在于：所述环境温度检测单元包括温度传感器，所述温度传感器设有两个引脚，其中第1引脚连接温度检测控制信号端NTC-SW，第2引脚连接温度模拟信号端NTC-DET，所述第2引脚同时还连接电阻R 17的一端和电容C 11的一端，电阻R 17的另一端连接供电信号端VDD，电容C 11的另一端接地。
  9. 根据权利要求1所述通过触控压力传感器控制预热的电子烟，其特征在于：所述控制电路板上还设有重力感应传感器，所述重力感应传感器用于检测使用者的吸烟动作并发送动作信息给中心控制单元，当所述环境温度检测值小于预设环境温度值，及所述触控压力检测值未达到预设触控压力值，但重力感应传感器检测到吸烟动作时，中心控制单元控制所述功率输出单元对所述发热元件供电进行预热。
  10. 根据权利要求9所述通过触控压力传感器控制预热的电子烟，其特征在于：所述重力感应传感器包括第三芯片，所述第三芯片设有12个引脚，其中第1引脚连接时钟信号端SCL，第4引脚连接重力感应数据信号端SDA，第6引脚接地，第8引脚接地，第9引脚与第10引脚共同连接到电源信号端VDD，另第1引脚还连接电阻R 9的一端，电阻R 9的另一端连接到电源信号端VDD，第4引脚还连接电阻R 10的一端，电阻R 10的另一端连接到电源信号端VDD，电源信号端VDD还连接电容C 7的一端，电容C 7的另一端接地。
  11. 一种根据权利要求1-8任一项所述通过触控压力传感器控制预热的电子烟的预热方法，其特征在于，包括以下步骤：
    （1）参数初始化，包括触控压力传感器参数初始化、中心控制单元对触控压力传感器预热参数初始化、中心控制单元对预热温度条件的初始化；
    （2）判断电子烟是否处于开机状态，如果是，则进入步骤（4），如果否，则进入下一步；
    （3）进行开机操作；
    （4）中心控制单元进入开机状态；
    （5）环境温度检测单元读取环境温度检测值，并传送给中心控制单元；
    （6）中心控制单元判断触控环境温度检测值是否达到预设温度值，如果是，则进入下一步，如果否，则进入步骤（10）；
    （7）触控压力传感器检测触控压力，并将触控压力检测值传送给中心控制单元；
    （8）中心控制单元判断触控压力检测值是否达到触控压力预设值或单位时间内的触控次数是否达到预设次数，如果是，则进入下一步，如果否，则返回步骤（4）；
    （9）中心控制单元控制功率输出单元输出功率给发热元件进行预热，使预热温度检测值达到预热温度预设值；
    （10）电子烟进入待机可吸烟状态。
  12. 一种根据权利要求9或10任一项所述通过触控压力传感器控制预热的电子烟的预热方法，其特征在于，包括以下步骤：
    （1）参数初始化，包括触控压力传感器参数初始化、中心控制单元对触控压力传感器预热参数初始化、中心控制单元对触控压力传感器预热参数初始化、中心控制单元对预热温度条件的初始化；
    （2）判断电子烟是否处于开机状态，如果是，则进入步骤（4），如果否，则进入下一步；
    （3）进行开机操作；
    （4）中心控制单元进入开机状态；
    （5）环境温度检测单元读取环境温度检测值，并传送给中心控制单元；
    （6）中心控制单元判断触控环境温度检测值是否低于预设环境温度值，如果是，则进入下一步，如果否，则进入步骤（12）；
    （7）触控压力传感器检测触控压力，并将触控压力检测值传送给中心控制单元；
    （8）中心控制单元判断触控压力检测值是否达到触控压力预设值或单位时间内的触控次数是否达到预设次数，如果是，则进入步骤（11），如果否，则进入下一步；
    （9）重力感应传感器检测用户的吸烟动作并传送信号给中心控制单元；
    （10）中心控制单元判断重力感应传感器是否检测到吸烟动作，如果是，则进入下一步，如果否，则返回步骤（4）；
    （11）中心控制单元控制功率输出单元输出功率给发热元件进行预热，使预热温度检测值达到预热温度预设值；
    （12）电子烟进入待机可吸烟状态。
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