WO2021088523A1 - 具有气压感应单元的电子雾化装置芯片及其工作方法 - Google Patents

具有气压感应单元的电子雾化装置芯片及其工作方法 Download PDF

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Publication number
WO2021088523A1
WO2021088523A1 PCT/CN2020/115735 CN2020115735W WO2021088523A1 WO 2021088523 A1 WO2021088523 A1 WO 2021088523A1 CN 2020115735 W CN2020115735 W CN 2020115735W WO 2021088523 A1 WO2021088523 A1 WO 2021088523A1
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Prior art keywords
air pressure
signal
module
sensing unit
air
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PCT/CN2020/115735
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English (en)
French (fr)
Inventor
林光榕
张夕勇
郑贤彬
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
Priority to EP20885611.2A priority Critical patent/EP4014765B1/en
Priority to CA3152035A priority patent/CA3152035A1/en
Priority to US17/762,729 priority patent/US20220341801A1/en
Publication of WO2021088523A1 publication Critical patent/WO2021088523A1/zh

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L9/00—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
    • G01L9/02—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means by making use of variations in ohmic resistance, e.g. of potentiometers, electric circuits therefor, e.g. bridges, amplifiers or signal conditioning
    • G01L9/06—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means by making use of variations in ohmic resistance, e.g. of potentiometers, electric circuits therefor, e.g. bridges, amplifiers or signal conditioning of piezo-resistive devices
    • 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
    • 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
    • A24F40/65—Devices with integrated communication means, e.g. Wi-Fi
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
    • G01L19/0092—Pressure sensor associated with other sensors, e.g. for measuring acceleration or temperature
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B1/00—Details of electric heating devices
    • H05B1/02—Automatic switching arrangements specially adapted to apparatus ; Control of heating devices
    • H05B1/0227—Applications
    • H05B1/023—Industrial applications
    • H05B1/0244—Heating of fluids
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M11/00—Sprayers or atomisers specially adapted for therapeutic purposes
    • A61M11/04—Sprayers or atomisers specially adapted for therapeutic purposes operated by the vapour pressure of the liquid to be sprayed or atomised
    • A61M11/041—Sprayers or atomisers specially adapted for therapeutic purposes operated by the vapour pressure of the liquid to be sprayed or atomised using heaters
    • A61M11/042—Sprayers or atomisers specially adapted for therapeutic purposes operated by the vapour pressure of the liquid to be sprayed or atomised using heaters electrical
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M15/00—Inhalators
    • A61M15/06—Inhaling appliances shaped like cigars, cigarettes or pipes
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/0003—Accessories therefor, e.g. sensors, vibrators, negative pressure
    • A61M2016/0015—Accessories therefor, e.g. sensors, vibrators, negative pressure inhalation detectors
    • A61M2016/0018—Accessories therefor, e.g. sensors, vibrators, negative pressure inhalation detectors electrical
    • A61M2016/0021—Accessories therefor, e.g. sensors, vibrators, negative pressure inhalation detectors electrical with a proportional output signal, e.g. from a thermistor
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/0003—Accessories therefor, e.g. sensors, vibrators, negative pressure
    • A61M2016/0027—Accessories therefor, e.g. sensors, vibrators, negative pressure pressure meter
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/02—General characteristics of the apparatus characterised by a particular materials
    • A61M2205/0272—Electro-active or magneto-active materials
    • A61M2205/0294—Piezoelectric materials
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/33—Controlling, regulating or measuring
    • A61M2205/3331—Pressure; Flow
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/33—Controlling, regulating or measuring
    • A61M2205/3331—Pressure; Flow
    • A61M2205/3334—Measuring or controlling the flow rate
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/33—Controlling, regulating or measuring
    • A61M2205/3368—Temperature
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/82—Internal energy supply devices
    • A61M2205/8206—Internal energy supply devices battery-operated
    • A61M2205/8212—Internal energy supply devices battery-operated with means or measures taken for minimising energy consumption

Definitions

  • the present invention relates to the technical field of electronic atomization devices. More specifically, the present invention relates to an electronic atomization device chip with an air pressure induction unit and a working method of the electronic atomization device chip with an air pressure induction unit.
  • the existing atomized electronic cigarettes are usually heated by the atomizer to atomize the smoke liquid to produce smoke for smoking.
  • the e-cigarette liquid does not contain cigarette tar, it avoids the danger of cigarette tar to people’s health.
  • the Chinese application number is 201910269123.8, the publication number is 109924548A, and the name is
  • Atomizing Device and Its Control Method for Ingested Dose discloses an atomizing device that can control the ingested dose
  • the atomization device includes battery, circuit control board, heating resistor, atomization channel, suction nozzle, detection
  • the airway, air pressure sensor, the circuit control board is equipped with a micro-controller that is electrically connected to each other, air flow
  • Quantity calculation unit energy statistics unit, energy and atomization quantity conversion unit and power control unit, air flow
  • the volume calculation unit converts the detected airway modeling volume and inspiratory pressure changes into the corresponding air flow
  • the power control unit controls the output power to the heating resistor according to the air flow value, and the energy system
  • the meter unit counts the output energy according to the output power and time, and the energy and atomization amount conversion unit converts the energy
  • the air pressure sensor detects the change of the inhalation air pressure, and then the air flow calculation unit changes the air pressure.
  • circuit unit the circuit structure is complex, the occupied space is large, the signal standard is not uniform, and the conversion requires a long time
  • the purpose of the present invention is to provide an electronic atomization device chip with an air pressure sensing unit and a working method thereof in order to overcome the above-mentioned technical deficiencies.
  • the electronic atomization device chip with an air pressure sensing unit combines the air pressure sensing function with the air flow rate. Combine two functions into one.
  • An electronic atomization device chip with an air pressure sensing unit includes an electrically connected air pressure sensing unit, a control unit, a number of auxiliary resistors, capacitors and a number of pins.
  • the control unit includes Memory, control logic module, air pressure sensing unit drive module, signal amplification module, analog-to-digital conversion module, data processing and calibration module, communication interface module and enable signal input control circuit, said air pressure sensing unit is used to detect electronic atomization device
  • the air pressure generated during internal inhalation the memory is used to store related parameters
  • the control logic module is used to control the logic control of the internal circuit of the unit
  • the air pressure sensing unit driving module is used to drive the air pressure sensing unit to work
  • the signal The amplifying module is used to amplify the air pressure analog signal detected by the air pressure sensing unit and transmit it to the analog-to-digital conversion module, the analog-to-digital conversion module converts the air pressure analog signal into a digital air pressure signal, and the data processing
  • control unit is configured to be inoperative, and the air pressure sensing unit is configured to cyclically detect air pressure, and when a change in air pressure is detected, the control unit immediately enters the working state.
  • the plurality of pins at least include a power supply pin, a ground pin, an activation signal output pin, an internal data output pin, an external data input pin, a clock signal pin, and an enable signal input pin.
  • the activation signal output pin is used to output the activation signal generated by the control unit to the external controller to activate the electronic atomization device, and the internal data output pin, the external data input pin and the clock pin are connected to the communication interface module ,
  • the internal data output pin is used to output internal data to an external controller, the external data input pin is used to input external data, and the clock signal pin is used to input a clock signal for data reading and writing.
  • the enable signal input pin is used to input an enable signal to control internal data output and external data input.
  • an air pressure change threshold is preset in the memory, and the condition for the control unit to generate the activation signal is set as follows: the control unit determines that the change value of the air pressure digital signal reaches the set air pressure change threshold.
  • the control unit further includes a circuit switching module for switching the air pressure analog signal detected by the pressure sensing unit and the temperature sensing
  • the temperature analog signal detected by the unit and the switched air pressure analog signal or temperature analog signal are sequentially transmitted to the analog-to-digital conversion module, and the analog-to-digital conversion module can also convert the temperature analog signal into a temperature digital signal.
  • control unit further includes an output control module electrically connected to the data processing and calibration module, and the output control module generates a PWM output control signal according to the air flow digital signal for controlling the power of the electronic atomization device.
  • the external pin further includes a PWM output control signal pin, and the PWM output control signal pin is used to output the PWM output control signal generated by the output control module.
  • control unit further includes an on-chip oscillator, and the on-chip oscillator is used to provide a frequency signal when the control unit is working.
  • control unit further includes a real-time clock module, and the real-time clock module is used for timing.
  • Another technical solution of the present invention is a working method of an electronic atomization device chip with an air pressure sensing unit.
  • the method includes the following steps:
  • the air pressure analog signal is amplified by the signal amplifying module, and converted into the air pressure digital signal through the analog-to-digital conversion module;
  • the control logic module judges whether the change value of the air pressure digital signal reaches the set air pressure change threshold, if yes, proceed to steps (7) and (8) at the same time, if not, return to step (2);
  • the control unit generates an activation signal and outputs it to the external controller through the activation signal output terminal to activate the electronic atomization device;
  • step (2) Whether the enable signal input control circuit receives the enable signal and whether the communication interface module receives the data transmission request signal, if both are, go to the next step, if not, go back to step (2);
  • the communication interface module outputs the air flow digital signal to the external controller via the internal data output pin, and returns to step (2).
  • Another technical solution of the present invention is a working method of an electronic atomization device chip with an air pressure sensing unit, and the method includes the following steps:
  • step (3) and step (4) are entered at the same time;
  • step (3) Whether the air pressure sensing unit detects the change of the air pressure analog signal inside the electronic atomization device, if yes, go to step (5), if not, go back to step (2);
  • the temperature sensor unit detects the temperature analog signal of the internal temperature of the chip
  • the air pressure analog signal is amplified by the signal amplifying module and converted into a digital air pressure signal through the analog-to-digital conversion module;
  • the control logic module judges whether the change value of the air pressure digital signal reaches the set air pressure change threshold, if yes, proceed to steps (9), (10), (12) at the same time, if not, then return to step (2);
  • the control unit generates an activation signal and outputs it to the external controller through the activation signal output terminal to activate the electronic atomization device;
  • the output control module generates and outputs the PWM output control signal, and returns to step (2);
  • step (12) Whether the enable signal input control circuit receives the enable signal and whether the communication interface module receives the data transmission request signal, if both are, go to the next step, if not, go back to step (2);
  • the communication interface module outputs the air flow digital signal to the external controller via the internal data output pin, and returns to step (2);
  • the temperature analog signal is amplified by the signal amplification module and converted into a temperature digital signal through the analog-to-digital conversion module;
  • the control logic module judges whether the temperature digital signal reaches the set temperature threshold, if it is, go to the next step, if not, go back to step (2);
  • the electronic atomization device chip with air pressure sensing unit has built-in air pressure sensing unit and control unit.
  • the control unit detects the air pressure sensing unit through the control logic module, signal amplification module, analog-to-digital conversion module, data processing and calibration module
  • the air pressure signal is directly amplified, converted, and calibrated inside the chip, and then the air flow signal is output.
  • the built-in air pressure signal acquisition circuit and high-precision analog-to-digital converter realize the accurate acquisition of the air pressure signal, and the accurate calibration of the signal is realized through the built-in control unit And compensation, through the built-in algorithm to achieve the accurate conversion of pressure to airflow, so it can make the data transmission response fast, and the air pressure signal can complete the accurate conversion inside the chip, which will greatly improve the control accuracy of the atomization amount of the electronic atomization device; at the same time; , Provides a customizable air pressure change threshold, and gives an activation signal when the air pressure change is greater than the set threshold, which can accurately determine the user’s smoking action and reduce the false start of the electronic atomization device.
  • the chip is highly integrated, so There are few external components, high working efficiency, low heat generation, and small chip size, which is very easy to install on the small electronic atomization device circuit board.
  • FIG. 1 is the first structural diagram of the internal circuit of the electronic atomization device chip according to the embodiment of the present invention
  • FIG. 2 is the second internal circuit structure diagram of the electronic atomization device chip according to the embodiment of the present invention.
  • FIG. 3 is a first flow chart of the working method of the electronic atomization device chip according to the embodiment of the present invention.
  • FIG. 4 is a second flowchart of the working method of the electronic atomization device chip according to the embodiment of the present invention.
  • the electronic atomizing device referred to in the present invention is an atomizing device or an atomizing appliance that heats and evaporates a liquid substance into a vaporous mist substance. It can not only be used for electronic cigarettes to atomize smoke liquid to generate smoke, but also can be used for In the medical field, the liquid containing the medicine can be heated and evaporated into a mist-like substance for the patient to inhale, so as to achieve the purpose of treatment.
  • an electronic atomization device chip with an air pressure sensing unit of the present invention is packaged with an airpre-sensor electrically connected to the airpre-sensor, a control unit MCU, and a number of auxiliary resistors (not shown in the figure). , Capacitor C, and a number of pins on the side of the chip.
  • the control unit MCU includes memory EEPROM, control logic module Control, air pressure sensing unit drive module Driver, signal amplification module PGA, analog-to-digital conversion module ADC, data processing and calibration module P&C, communication interface module SPI and enable signal input control circuit Readycontrol.
  • the air pressure sensing unit Airpre-sensor is used to detect the air pressure generated during inhalation inside the electronic atomization device. Inhalation generally generates negative pressure.
  • the air pressure sensing unit Airpre-sensor detects the air pressure analog signal.
  • the memory EEPROM is used to store the set related parameters and related parameters generated during work.
  • the control logic module Control is used to control the logic control and analysis and judgment of the internal circuit of the control unit MCU.
  • the air pressure sensor unit driver module is used to assist and drive the air pressure sensor unit. Airpre-sensor work, the signal amplification module PGA is used to amplify the air pressure analog signal detected by the air pressure sensing unit Airpre-sensor and transmit it to the analog-to-digital conversion module ADC.
  • the analog-to-digital conversion module ADC converts the air pressure analog signal into a pressure digital signal, data
  • the processing and calibration module P&C processes and calibrates the digital signal of air pressure and converts it into a digital signal of air flow. Because the external air pressure is not stable, it needs to be calibrated in order to avoid errors.
  • the communication interface module SPI and the enable signal input control circuit Readycontrol are connected to several pins.
  • the communication interface module SPI is used to communicate with external components for input or output data signals
  • the enable signal input control circuit Readycontrol is used to receive external enable Signal and control the work of the communication interface module SPI, that is, when an enable signal is received, the enable signal input control circuit Readycontrol can make the communication interface module SPI output data or input data.
  • the chip of the present invention is also provided with a standby state.
  • the control unit MCU When in standby, the control unit MCU is configured to not work, and the air pressure sensing unit Airpre-sensor is configured to patrol the air pressure, which can save power.
  • the air pressure sensing unit Airpre-sensor detects a change in air pressure
  • the control unit MCU immediately enters the working state.
  • the electronic atomization device takes an inhalation action, negative pressure will be generated inside it, that is, the pressure will change.
  • the control unit MCU is awakened to get The power supply enters the working state.
  • the chip pins include power supply pin VDD, ground pin GND, activation signal output pin ENB, internal data output pin SDO, external data input pin SDI, clock signal pin SCK and enable Signal input pin READY.
  • the activation signal output pin ENB is used to output the activation signal generated by the control unit MCU to an external controller (not shown in the figure) to activate the electronic atomization device.
  • the internal data output pin SDO, the external data input pin SDI and the clock input The pin SCK is connected to the communication interface module SPI, the internal data output pin SDO is used to output internal data to the external controller, the external data input pin SDI is used to input external data, and the clock signal pin SCK is used to input clock signals for data Read and write, the enable signal input pin READY is used to input the enable signal in order to control internal data output and external data input.
  • a pressure change threshold is preset in the memory EEPROM, and the condition for the control unit MCU to generate an activation signal is set as follows: the control unit MCU determines that the change value of the pressure digital signal reaches the set pressure change threshold. That is, when the control unit MCU determines that the change value of the air pressure digital signal reaches the set air pressure change threshold, the control unit MCU generates an activation signal to output to the external controller, thereby activating the electronic atomization device. Under normal circumstances, changes in the external air pressure may cause the change in the internal pressure of the atomization device unintentionally caused by the user, which may trigger the electronic atomization device to enter the working state by mistake.
  • the feature of the chip of this embodiment is that it is packaged with a pressure sensing unit Airpre-sensor, a control unit MCU, plus a number of peripheral auxiliary resistors and auxiliary capacitors.
  • the air pressure sensing unit Airpre-sensor and the control unit MCU can be set to two built-in bare chips.
  • the air pressure sensing unit Airpre-sensor is a kind of pressure sensitive element, that is, the bridge pressure sensor detects the value of the air pressure change, thereby converting the air flow sensor.
  • a piezoresistive pressure sensor is integrated in a single chip, and a sensor signal conditioning and transmission circuit with a control unit MCU as the core is integrated, and the SPI interface is used for output.
  • the chip of this embodiment detects gas flow by detecting changes in air pressure, built-in signal acquisition circuit and high-precision analog-to-digital converter to achieve accurate acquisition of sensor unit signals, and realizes signal calibration and compensation through built-in MCU, and through built-in algorithms
  • the conversion from pressure to air flow is realized, and the measurement data is synchronously provided through the SPI interface and sent to external components.
  • the chip has high flexibility, and the algorithm and function can be expanded.
  • the electronic atomization device chip of this embodiment not only includes the circuit structure elements described in the embodiment 1, but also includes a chip for detecting the temperature of the electronic atomization device chip.
  • the temperature sensing unit Tem-sensor, the control unit MCU also includes a circuit switching module MUX, the circuit switching module MUX is used to sequentially switch the pressure analog signal detected by the pressure sensor unit Airpre-sensor and the temperature analog signal detected by the temperature sensor unit Tem-sensor, and The switched air pressure analog signal or temperature analog signal is sequentially transmitted to the analog-digital conversion module ADC, and the analog-digital conversion module ADC can also convert the temperature analog signal into a temperature digital signal.
  • the purpose of the temperature sensing unit Tem-sensor is to detect the temperature of the chip during operation, to prevent abnormal temperature caused by the chip when the chip is working under high load or working in a high temperature or low temperature environment, and to avoid chip damage and malfunction.
  • the control unit MCU also includes an output control module PWMcontrol electrically connected to the data processing and calibration module P&C, and the output control module PWMcontrol is used to generate a PWM output control signal.
  • the external pins also include the PWM output control signal pin PWM.
  • the PWM output control signal pin is used to output the output of the PWM output control signal generated by the control module PWM.
  • the output control module PWMcontrol generates a PWM output control signal according to the air flow digital signal to control the power of the electronic atomization device.
  • control unit MCU also includes an on-chip oscillator OSC.
  • the on-chip oscillator OSC is used to provide a frequency signal when the control unit MCU is working.
  • the control unit MCU also includes a real-time clock module RTC, which is used for timing and reading time.
  • the feature of the chip of this embodiment is that it is packaged with a pressure sensing unit Airpre-sensor, a control unit MCU, plus a number of peripheral auxiliary resistors and auxiliary capacitors.
  • the pressure sensing unit Airpre-sensor and the control unit MCU can be set to two built-in bare chips.
  • the air pressure sensing unit Airpre-sensor is a sensor that uses a pressure sensitive element, that is, a bridge-type pressure sensor to detect changes in air pressure, thereby converting air flow.
  • a single chip integrates a piezoresistive pressure sensor and a temperature sensor, and at the same time integrates a gas pressure sensing unit signal conditioning and transmission circuit with a control unit MCU as the core, adopts an SPI interface for output, and also supports PWM signal output.
  • the chip of this embodiment detects gas flow by detecting changes in air pressure, built-in signal acquisition circuit and high-precision analog-to-digital converter to achieve accurate acquisition of sensor unit signals, and realizes signal calibration and compensation through built-in MCU, and through built-in algorithms Realize the conversion of pressure to airflow.
  • it provides a customizable air flow threshold. When the air flow is greater than the set minimum air flow threshold, a PWM control signal is given, and the measurement data is synchronously provided through the SPI interface and sent to external components.
  • the chip has high flexibility, and the algorithm and function can be expanded.
  • a working method of an electronic atomization device chip with an air pressure sensing unit includes the following steps:
  • the air pressure sensing unit detects the change of the air pressure analog signal inside the electronic atomization device, that is, whether the electronic atomization device has an inhalation action, if it is, then go to the next step, if not, then return to the previous step;
  • the control unit starts to work, and the air pressure analog signal is amplified by the signal amplification module and converted into a digital air pressure signal through the analog-to-digital conversion module;
  • the control logic module judges whether the change value of the air pressure digital signal reaches the set air pressure change threshold, that is
  • the control unit generates an activation signal and outputs it to the external controller through the activation signal output terminal to activate the electronic atomization device;
  • step (2) Whether the enable signal input control circuit receives the enable signal and whether the communication interface module receives the data transmission request signal, if both are, go to the next step, if not, go back to step (2);
  • the communication interface module outputs the air flow digital signal to the external controller via the internal data output pin, and returns to step (2).
  • the air pressure sensing unit continuously detects whether the air pressure changes.
  • a working method of an electronic atomization device chip with an air pressure sensing unit includes the following steps:
  • step (3) and step (4) are entered at the same time;
  • step (3) Whether the air pressure sensing unit detects the change of the air pressure analog signal inside the electronic atomization device, that is, whether the electronic atomization device has an inhalation action, if yes, go to step (5), if not, go back to step (2) );
  • the temperature sensor unit detects the temperature analog signal of the internal temperature of the chip
  • the control unit sequentially switches the air pressure analog signal and the temperature analog signal through the circuit switching module.
  • step (6) When switching to the air pressure analog signal, go to step (6), and when switching to the temperature analog signal, go to step (12);
  • the air pressure analog signal is amplified by the signal amplifying module, and converted into the air pressure digital signal through the analog-to-digital conversion module;
  • the control logic module judges whether the change value of the air pressure digital signal reaches the set air pressure change threshold, that is, judges whether the inhalation has a false trigger action, if it is, that is, there is no false trigger action, proceed to steps (9) and (10) at the same time , (12), if not, that is, there may be a false trigger action, go back to step (2);
  • the control unit generates an activation signal and outputs it to the external controller through the activation signal output terminal to activate the electronic atomization device;
  • the output control module generates and outputs the PWM output control signal, and returns to step (2);
  • step (12) Whether the enable signal input control circuit receives the enable signal and whether the communication interface module receives the data transmission request signal, if both are, go to the next step, if not, go back to step (2);
  • the communication interface module outputs the air flow digital signal to the external controller via the internal data output pin, and returns to step (2);
  • the temperature analog signal is amplified by the signal amplification module and converted into a temperature digital signal through the analog-to-digital conversion module;
  • the control logic module judges whether the temperature digital signal reaches the set temperature threshold, if it is, go to the next step, if not, go back to step (2);
  • the air pressure sensing unit continuously detects whether the air pressure changes.

Abstract

一种具有气压感应单元的电子雾化装置芯片及其工作方法，该芯片包括气压感应单元、控制单元、若干辅助电阻、电容和若干引脚，气压感应单元用于检测电子雾化装置内部吸气时产生的气压大小，控制单元中的存储器用于存储相关参数，控制逻辑模块用于控制单元内部电路的逻辑控制，气压感应单元驱动模块用于驱动气压感应单元工作，信号放大模块用于将气压感应单元检测的气压模拟信号进行放大并传送给模数转换模块，模数转换模块将气压模拟信号转换成气压数字信号，数据处理和校准模块将气压数字信号进行处理和校准后转换为气流量数字信号；其有益之处在于，将气压感应功能与空气流量计算功能合二为一，数据传输响应快，控制精度极大提高。

Description

具有气压感应单元的电子雾化装置芯片及其工作方法 技术领域
本发明涉及电子雾化装置技术领域，更具体的说，本发明涉及一种具有气压感应单元的电子雾化装置芯片以及该具有气压感应单元的电子雾化装置芯片的工作方法。
 背景技术
现有的雾化电子烟通常经过雾化器的加热而将烟液雾化而产生烟雾供吸烟
者使用，由于电子烟的烟液中不含有烟焦油，避免了烟焦油对于人们身体的危
害，因而电子烟逐渐替代香烟得到广泛使用。
中国申请号为201910269123.8、公开号为109924548A、名称为《可控制摄
入剂量的雾化装置及其控制方法》的专利，公开了一种可控制摄入剂量的雾化
装置，该雾化装置包括电池、电路控制板、发热电阻、雾化通道、吸嘴、检测
气道、气压传感器，电路控制板上设有包括相互电性连接的微控制器、空气流
量计算单元、能量统计单元、能量与雾化量转换单元与功率控制单元，空气流
量计算单元根据检测气道建模容积以及吸气气压的变化转换成相应的空气流量
值，功率控制单元根据空气流量值来控制输出到发热电阻的输出功率，能量统
计单元根据输出功率与时间来统计输出能量，能量与雾化量转换单元将能量转
换为相应的气溶胶摄入量值，微控制器将其与预设的气溶胶摄入量限定值对比
后发出相应的控制信号控制功率控制单元从而控制气溶胶的摄入剂量。该专利
公开了通过气压传感器检测吸气气压变化，再通过空气流量计算单元将气压变
化转换成空气流量值，最后达到控制气溶胶摄入剂量的目的。
上述专利中，气压传感器、空气流量计算单元分别属于分开的不同元器件
和电路单元，电路结构复杂、所占用空间大，信号标准不统一，转换需要较长
时间，因此存在两者间的数据传输响应慢、误差大的缺点，同时导致控制精度
降低。
 技术问题
本发明的目的在于为克服上述技术的不足而提供一种具有气压感应单元的电子雾化装置芯片及其工作方法，该具有气压感应单元的电子雾化装置芯片，将气压感应功能与气流量计算功能合二为一。
 技术解决方案
本发明的技术方案是这样实现的，一种具有气压感应单元的电子雾化装置芯片，包括电性连接的气压感应单元、控制单元、若干辅助电阻、电容和若干引脚，所述控制单元包括存储器、控制逻辑模块、气压感应单元驱动模块、信号放大模块、模数转换模块、数据处理和校准模块、通讯接口模块和使能信号输入控制电路，所述气压感应单元用于检测电子雾化装置内部吸气时产生的气压，所述存储器用于存储相关参数，所述控制逻辑模块用于控制单元内部电路的逻辑控制，所述气压感应单元驱动模块用于驱动气压感应单元工作，所述信号放大模块用于将气压感应单元检测的气压模拟信号进行放大并传送给所述模数转换模块，所述模数转换模块将气压模拟信号转换成气压数字信号，所述数据处理和校准模块将气压数字信号进行处理和校准并转换为气流量数字信号，所述通讯接口模块用于与外部元件进行通讯连接，所述使能信号输入控制电路用于接收外部使能信号并控制通讯接口模块工作。
优选地，待机时，所述控制单元配置为不工作，所述气压感应单元配置为巡回检测气压，当检测到气压发生变化时，所述控制单元立即进入工作状态。
优选地，所述若干引脚至少包括供电引脚、接地引脚、激活信号输出引脚、内部数据输出引脚、外部数据输入引脚、时钟信号引脚和使能信号输入引脚，所述激活信号输出引脚用于将控制单元产生的激活信号输出到外部控制器以便激活电子雾化装置，所述内部数据输出引脚、外部数据输入引脚和时钟引脚与所述通讯接口模块连接，所述内部数据输出引脚用于将内部数据输出到外部控制器，所述外部数据输入引脚用于输入外部数据，所述时钟信号引脚用于输入时钟信号进行数据读写，所述使能信号输入引脚用于输入使能信号以便控制内部数据输出和外部数据输入。
优选地，所述存储器中预设有气压变化阈值，所述控制单元产生所述激活信号的条件设定为，所述控制单元判断气压数字信号的变化值达到设定的气压变化阈值。
优选地，还包括用于检测电子雾化装置芯片温度的温度感应单元，所述控制单元还包括电路切换模块，所述电路切换模块用于切换所述压力感应单元检测的气压模拟信号和温度感应单元检测的温度模拟信号，并将切换后的气压模拟信号或温度模拟信号依次传送给所述模数转换模块，所述模数转换模块还可将温度模拟信号转换成温度数字信号。
优选地，所述控制单元还包括与数据处理和校准模块电性连接的输出控制模块，所述输出控制模块根据气流量数字信号产生PWM输出控制信号用于控制电子雾化装置的功率。
优选地，所述外部引脚还包括PWM输出控制信号引脚，所述PWM输出控制信号引脚用于输出所述输出控制模块产生的PWM输出控制信号。
优选地，所述控制单元还包括片内振荡器，所述片内振荡器用于为所述控制单元工作时提供频率信号。
优选地，所述控制单元还包括实时时钟模块，所述实时时钟模块用于计时。
本发明的另一种技术解决方案是，一种具有气压感应单元的电子雾化装置芯片的工作方法，该方法包括以下的步骤：
（1）芯片供电，相关参数初始化；
（2）芯片处于待机状态，气压感应单元工作；
（3）气压感应单元是否检测到电子雾化装置内部气压模拟信号的变化，如果是，则进入下一步，如果否，则返回上一步；
（4）气压模拟信号经信号放大模块放大，并通过模数转换模块转换成气压数字信号；
（5）通过数据处理和校准模块将气压数字信号进行处理和校准，并转换为对应的气流量数字信号；
（6）控制逻辑模块判断气压数字信号变化值是否达到设定气压变化阈值，如果是，则同时进入步骤（7）和（8），如果否，则返回步骤（2）；
（7）控制单元产生激活信号并通过激活信号输出端输出到外部控制器以便激活电子雾化装置；
（8）使能信号输入控制电路是否收到使能信号及通讯接口模块是否收到数据发送请求信号，如果两者都是，则进入下一步，如果否，则返回步骤（2）；
（9）通讯接口模块将气流量数字信号经内部数据输出引脚输出到外部控制器，返回步骤（2）。
本发明的又一种技术解决方案是，一种具有气压感应单元的电子雾化装置芯片的工作方法，该方法包括以下的步骤：
（1）芯片供电，相关参数初始化；
（2）芯片处于待机状态，气压感应单元及温度感应单元工作，同时进入步骤（3）和步骤（4）；
（3）气压感应单元是否检测到电子雾化装置内部气压模拟信号的变化，如果是，则进入步骤（5），如果否，则返回步骤（2）；
（4）温度感应单元检测到芯片内部温度的温度模拟信号；
（5）通过电路切换模块依次切换气压模拟信号和温度模拟信号，切换成气压模拟信号时，进入步骤（6），切换成温度模拟信号时，进入步骤（12）；
（6）气压模拟信号经信号放大模块放大，并通过模数转换模块转换成气压数字信号；
（7）通过数据处理和校准模块将气压数字信号进行处理和校准，并转换为对应的气流量数字信号；
（8）控制逻辑模块判断气压数字信号变化值是否达到设定气压变化阈值，如果是，则同时进入步骤（9）、（10）、（12），如果否，则返回步骤（2）；
（9）控制单元产生激活信号并通过激活信号输出端输出到外部控制器以便激活电子雾化装置；
（10）判断气流量数字信号是否达到设定最低气流量阈值，如果是，则进入下一步，如果否，则返回步骤（2）；
（11）输出控制模块产生并输出PWM输出控制信号，返回步骤（2）；
（12）使能信号输入控制电路是否收到使能信号及通讯接口模块是否收到数据发送请求信号，如果两者都是，则进入下一步，如果否，则返回步骤（2）；
（13）通讯接口模块将气流量数字信号经内部数据输出引脚输出到外部控制器，返回步骤（2）；
（14）温度模拟信号经信号放大模块放大，并通过模数转换模块转换成温度数字信号；
（15）控制逻辑模块判断温度数字信号是否达到设定温度阈值，如果是，则进入下一步，如果否，则返回步骤（2）；
（16）使芯片停止工作，进行高温或低温保护。
 有益效果
该具有气压感应单元的电子雾化装置芯片，芯片内置了气压感应单元和控制单元，控制单元通过控制逻辑模块、信号放大模块、模数转换模块、数据处理和校准模块将气压感应单元检测到的气压信号直接在芯片内部进行放大、转换、校准后输出气流量信号，这样，内置的气压信号采集电路和高精度模数转换器实现气压信号的精确采集，并通过内置控制单元实现信号的精确校准和补偿，通过内置算法实现压力到气流的精确转换，因此可以使得数据传输响应快、气压信号在芯片内部即可完成精确转换，将使电子雾化装置雾化量的控制精度极大提高；同时，提供可自定义的气压变化阈值，在气压变化大于设定阈值时给出激活信号，起到准确判断用户吸烟动作、减少电子雾化装置误启动的作用；另外，本芯片集成度高，使外部元器件少，工作效率高，发热量小，且芯片体积很小，非常容易在狭小的电子雾化装置电路板上进行安装。
 附图说明
图1为本发明实施例电子雾化装置芯片的内部电路结构图一；
图2为本发明实施例电子雾化装置芯片的内部电路结构图二；
图3为本发明实施例电子雾化装置芯片的工作方法的流程图一；
图4为本发明实施例电子雾化装置芯片的工作方法的流程图二。
 本发明的最佳实施方式
为了使本发明的目的、技术方案及优点更加清楚明白，以下结合附图及实施例，对本发明进行进一步详细说明。应当理解，此处所描述的具体实施例仅仅用于解释本发明，并不用于限定本发明。
本发明所称电子雾化装置，是一种将液态物质进行加热蒸发成汽态雾状物质的雾化装置或雾化器具，不仅可用于电子烟进行雾化烟液产生烟雾，还可以用于医疗领域，即可将溶解有药物的液体进行加热蒸发成雾状物质供患者吸食，达到治疗之目的。
实施例一
如图1所示，本发明的一种具有气压感应单元的电子雾化装置芯片，内部封装有包括电性连接的气压感应单元Airpre-sensor、控制单元MCU、若干辅助电阻(图中未示)、电容C，以及芯片侧边设有若干引脚。控制单元MCU包括存储器EEPROM、控制逻辑模块Control、气压感应单元驱动模块Driver、信号放大模块PGA、模数转换模块ADC、数据处理和校准模块P&C、通讯接口模块SPI和使能信号输入控制电路Readycontrol。气压感应单元Airpre-sensor用于检测电子雾化装置内部吸气时产生的气压大小，吸气一般产生负压，气压感应单元Airpre-sensor检测得到的是气压模拟信号。
存储器EEPROM用于存储设定的相关参数和工作中产生的相关参数，控制逻辑模块Control用于控制单元MCU内部电路的逻辑控制和分析判断，气压感应单元驱动模块Driver用于辅助和驱动气压感应单元Airpre-sensor工作，信号放大模块PGA用于将气压感应单元Airpre-sensor检测的气压模拟信号进行放大并传送给模数转换模块ADC，模数转换模块ADC将气压模拟信号转换成气压数字信号，数据处理和校准模块P&C将气压数字信号进行处理和校准后转换为气流量数字信号，因外界气压不是稳定不变的，为避免误差故需要进行校准。
通讯接口模块SPI和使能信号输入控制电路Readycontrol连接若干引脚，通讯接口模块SPI用于与外部元件进行通讯连接，进行输入或输出数据信号，使能信号输入控制电路Readycontrol用于接收外部使能信号并控制通讯接口模块SPI工作，即接收到使能信号时，使能信号输入控制电路Readycontrol可以使通讯接口模块SPI进行输出数据或输入数据。
为降低电子雾化装置待机的能耗，本发明的芯片，同样设置有待机状态。待机时，控制单元MCU配置为不工作，而气压感应单元Airpre-sensor配置为巡回检测气压，这样即可节省电能。当气压感应单元Airpre-sensor检测到气压发生变化时，控制单元MCU立即进入工作状态。电子雾化装置发生吸气动作时，其内部将产生负压，即压力会产生变化，气压感应单元Airpre-sensor检测到电子雾化装置内部气压模拟信号的变化时，控制单元MCU被唤醒，得到供电进入工作状态。
如图1所示，该芯片引脚包括供电引脚VDD、接地引脚GND、激活信号输出引脚ENB、内部数据输出引脚SDO、外部数据输入引脚SDI、时钟信号引脚SCK和使能信号输入引脚READY。激活信号输出引脚ENB用于将控制单元MCU产生的激活信号输出到外部控制器(图中未示)以便激活电子雾化装置，内部数据输出引脚SDO、外部数据输入引脚SDI和时钟引脚SCK与通讯接口模块SPI连接，内部数据输出引脚SDO用于将内部数据输出到外部控制器，外部数据输入引脚SDI用于输入外部数据，时钟信号引脚SCK用于输入时钟信号进行数据读写，使能信号输入引脚READY用于输入使能信号以便控制内部数据输出和外部数据输入。
如图1所示，存储器EEPROM中预设有气压变化阈值，控制单元MCU产生激活信号的条件设定为，控制单元MCU判断气压数字信号的变化值达到设定的气压变化阈值。即控制单元MCU判断气压数字信号的变化值达到设定的气压变化阈值时，控制单元MCU产生激活信号以便输出到外部控制器，从而激活电子雾化装置。通常情况下，外界气压的变化可能导致的，以及用户无意中造成的雾化装置内部压力的变化，可能会误触发电子雾化装置进入工作状态。为避免此种情况的发生，有必要预设气压变化阈值，当电子雾化装置内部的压力变化值超过预设气压变化阈值时，才判定需要启动电子雾化装置进行工作，否则，即使有微小的气压变化，也不会误触发而启动电子雾化装置。
本实施例芯片的特点在于，封装有气压感应单元Airpre-sensor、控制单元MCU，加上若干周边辅助电阻和辅助电容构成。气压感应单元Airpre-sensor、控制单元MCU可以设为两颗内置裸芯片，该气压感应单元Airpre-sensor是一种采用压力敏感元件，即电桥式压力传感器检测气压变化数值，从而换算气流量的传感器。本实施例单颗芯片中集成了压阻式压力传感器，同时集成了控制单元MCU为核心的传感器信号调理和变送电路，采用SPI接口输出。本实施例的芯片，通过检测气压变化检测气体气流量，内置的信号采集电路和高精度模数转换器实现传感单元信号的精确采集，并通过内置MCU实现信号的校准和补偿，通过内置算法实现压力到气流的转换，并通过SPI接口同步提供测量数据并发送给外部元件。本芯片的灵活度高，算法和功能可扩展。
 本发明的实施方式
实施例二
如图2所示，在前述实施例一的基础上，本实施例的电子雾化装置芯片除包括实施例一中所述的电路结构元件外，还包括用于检测电子雾化装置芯片温度的温度感应单元Tem-sensor，控制单元MCU还包括电路切换模块MUX，电路切换模块MUX用于依次切换压力感应单元Airpre-sensor检测的气压模拟信号和温度感应单元Tem-sensor检测的温度模拟信号，并将切换后的气压模拟信号或温度模拟信号依次传送给模数转换模块ADC，模数转换模块ADC还可将温度模拟信号转换成温度数字信号。设有温度感应单元Tem-sensor的目的在于检测芯片在工作中的温度，防止芯片在高负荷工作时或在高温或低温环境中工作导致的温度异常情况，避免芯片损坏产生故障。
如图2所示，控制单元MCU还包括与数据处理和校准模块P&C电性连接的输出控制模块PWMcontrol，输出控制模块PWMcontrol用于产生PWM输出控制信号。外部引脚还包括PWM输出控制信号引脚PWM，PWM输出控制信号引脚用于输出控制模块PWM产生的PWM输出控制信号的输出。输出控制模块PWMcontrol根据气流量数字信号产生PWM输出控制信号用于控制电子雾化装置的功率。
如图2所示，控制单元MCU还包括片内振荡器OSC，片内振荡器OSC用于为控制单元MCU工作时提供频率信号。控制单元MCU还包括实时时钟模块RTC，实时时钟模块RTC用于计时和读取时间。
本实施例芯片的特点在于，封装有气压感应单元Airpre-sensor、控制单元MCU，加上若干周边辅助电阻和辅助电容构成。气压感应单元Airpre-sensor、控制单元MCU可以设为两颗内置裸芯片。该气压感应单元Airpre-sensor是一种采用压力敏感元件，即电桥式压力传感器检测气压变化数值，从而换算气流量的传感器。本实施例单颗芯片中集成了压阻式压力传感器、温度传感器，同时集成了控制单元MCU为核心的气压感应单元信号调理和变送电路，采用SPI接口输出，还支持PWM信号输出。本实施例的芯片，通过检测气压变化检测气体气流量，内置的信号采集电路和高精度模数转换器实现传感单元信号的精确采集，并通过内置MCU实现信号的校准和补偿，通过内置算法实现压力到气流的转换。同时，提供可自定义的气流量阈值，在气流量大于设定的最低气流量阈值时给出PWM控制信号，并通过SPI接口同步提供测量数据并发送给外部元件。本芯片的灵活度高，算法和功能可扩展。
芯片工作方法的实施例一
如图3所示，一种具有气压感应单元的电子雾化装置芯片的工作方法，该方法包括以下的步骤：
（1）芯片供电，相关参数初始化；
（2）芯片处于待机状态，气压感应单元工作，此时控制单元不工作；
（3）气压感应单元是否检测到电子雾化装置内部气压模拟信号的变化，即检测电子雾化装置是否有吸气动作，如果是，则进入下一步，如果否，则返回上一步；
（4）控制单元开始工作，气压模拟信号经信号放大模块放大，并通过模数转换模块转换成气压数字信号；
（5）通过数据处理和校准模块将气压数字信号进行处理和校准，校准为准确的气压数字信号，并转换为对应的气流量数字信号；
（6）控制逻辑模块判断气压数字信号变化值是否达到设定气压变化阈值，即
判断吸气是否有误触发动作，如果是，即没有误触发动作，则同时进入步骤（7）和（8），如果否，即可能存在误触发动作，则返回步骤（2）；
（7）控制单元产生激活信号并通过激活信号输出端输出到外部控制器以便激活电子雾化装置；
（8）使能信号输入控制电路是否收到使能信号及通讯接口模块是否收到数据发送请求信号，如果两者都是，则进入下一步，如果否，则返回步骤（2）；
（9）通讯接口模块将气流量数字信号经内部数据输出引脚输出到外部控制器，返回步骤（2）。
上述步骤中涉及的元器件或模块名称，参见实施例一和图1，上述步骤中，气压感应单元连续检测气压是否发生变化。
芯片工作方法的实施例二
如图4所示，一种具有气压感应单元的电子雾化装置芯片的工作方法，该方法包括以下的步骤：
（1）芯片供电，相关参数初始化；
（2）芯片处于待机状态，气压感应单元及温度感应单元工作，同时进入步骤（3）和步骤（4）；
（3）气压感应单元是否检测到电子雾化装置内部气压模拟信号的变化，即检测电子雾化装置是否有吸气动作，如果是，则进入步骤（5），如果否，则返回步骤（2）；
（4）温度感应单元检测到芯片内部温度的温度模拟信号；
（5）控制单元通过电路切换模块依次切换气压模拟信号和温度模拟信号，切换成气压模拟信号时，进入步骤（6），切换成温度模拟信号时，进入步骤（12）；
（6）气压模拟信号经信号放大模块放大，并通过模数转换模块转换成气压数字信号；
（7）通过数据处理和校准模块将气压数字信号进行处理和校准，校准为准确的气压数字信号，并转换为对应的气流量数字信号；
（8）控制逻辑模块判断气压数字信号变化值是否达到设定气压变化阈值，即判断吸气是否有误触发动作，如果是，即没有误触发动作，则同时进入步骤（9）、（10）、（12），如果否，即可能存在误触发动作，则返回步骤（2）；
（9）控制单元产生激活信号并通过激活信号输出端输出到外部控制器以便激活电子雾化装置；
（10）判断气流量数字信号是否达到设定的最低气流量阈值，即判断吸气是否有误触发动作，如果是，即没有误触发动作，则进入下一步，如果否，即可能存在误触发动作，则返回步骤（2）；
（11）输出控制模块产生并输出PWM输出控制信号，返回步骤（2）；
（12）使能信号输入控制电路是否收到使能信号及通讯接口模块是否收到数据发送请求信号，如果两者都是，则进入下一步，如果否，则返回步骤（2）；
（13）通讯接口模块将气流量数字信号经内部数据输出引脚输出到外部控制器，返回步骤（2）；
（14）温度模拟信号经信号放大模块放大，并通过模数转换模块转换成温度数字信号；
（15）控制逻辑模块判断温度数字信号是否达到设定温度阈值，如果是，则进入下一步，如果否，则返回步骤（2）；
（16）使芯片停止工作，进行高温或低温保护，此时气压感应单元和控制单元均不工作，待保护时间过去后，需重新启动芯片进行工作。
上述步骤中涉及的元器件或模块名称，参见实施例二和图2，上述步骤中，气压感应单元连续检测气压是否发生变化。
 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 (11)

  1. 一种具有气压感应单元的电子雾化装置芯片，其特征在于，包括电性连接的气压感应单元、控制单元、若干辅助电阻、电容和若干引脚，所述控制单元包括存储器、控制逻辑模块、气压感应单元驱动模块、信号放大模块、模数转换模块、数据处理和校准模块、通讯接口模块和使能信号输入控制电路，所述气压感应单元用于检测电子雾化装置内部吸气时产生的气压，所述存储器用于存储相关参数，所述控制逻辑模块用于控制单元内部电路的逻辑控制，所述气压感应单元驱动模块用于驱动气压感应单元工作，所述信号放大模块用于将气压感应单元检测的气压模拟信号进行放大并传送给所述模数转换模块，所述模数转换模块将气压模拟信号转换成气压数字信号，所述数据处理和校准模块将气压数字信号进行处理和校准并转换为气流量数字信号，所述通讯接口模块用于与外部元件进行通讯连接，所述使能信号输入控制电路用于接收外部使能信号并控制通讯接口模块工作。
  2. 根据权利要求1所述的具有气压感应单元的电子雾化装置芯片，其特征在于，待机时，所述控制单元配置为不工作，所述气压感应单元配置为巡回检测气压，当检测到气压发生变化时，所述控制单元立即进入工作状态。
  3. 根据权利要求1所述的具有气压感应单元的电子雾化装置芯片，其特征在于，所述若干引脚至少包括供电引脚、接地引脚、激活信号输出引脚、内部数据输出引脚、外部数据输入引脚、时钟信号引脚和使能信号输入引脚，所述激活信号输出引脚用于将控制单元产生的激活信号输出到外部控制器以便激活电子雾化装置，所述内部数据输出引脚、外部数据输入引脚和时钟引脚与所述通讯接口模块连接，所述内部数据输出引脚用于将内部数据输出到外部控制器，所述外部数据输入引脚用于输入外部数据，所述时钟信号引脚用于输入时钟信号进行数据读写，所述使能信号输入引脚用于输入使能信号以便控制内部数据输出和外部数据输入。
  4. 根据权利要求3所述的具有气压感应单元的电子雾化装置芯片，其特征在于，所述存储器中预设有气压变化阈值，所述控制单元产生所述激活信号的条件设定为，所述控制单元判断气压数字信号的变化值达到设定的气压变化阈值。
  5. 根据权利要求1所述的具有气压感应单元的电子雾化装置芯片，其特征在于，还包括用于检测电子雾化装置芯片温度的温度感应单元，所述控制单元还包括电路切换模块，所述电路切换模块用于切换所述压力感应单元检测的气压模拟信号和温度感应单元检测的温度模拟信号，并将切换后的气压模拟信号或温度模拟信号依次传送给所述模数转换模块，所述模数转换模块还可将温度模拟信号转换成温度数字信号。
  6. 根据权利要求1所述的具有气压感应单元的电子雾化装置芯片，其特征在于，所述控制单元还包括与数据处理和校准模块电性连接的输出控制模块，所述输出控制模块根据气流量数字信号产生PWM输出控制信号用于控制电子雾化装置的功率。
  7. 根据权利要求6所述的具有气压感应单元的电子雾化装置芯片，其特征在于，所述外部引脚还包括PWM输出控制信号引脚，所述PWM输出控制信号引脚用于输出所述输出控制模块产生的PWM输出控制信号。
  8. 根据权利要求1所述的具有气压感应单元的电子雾化装置芯片，其特征在于，所述控制单元还包括片内振荡器，所述片内振荡器用于为所述控制单元工作时提供频率信号。
  9. 根据权利要求1所述的具有气压感应单元的电子雾化装置芯片，其特征在于，所述控制单元还包括实时时钟模块，所述实时时钟模块用于计时。
  10. 一种具有气压感应单元的电子雾化装置芯片的工作方法，其特征在于，该方法包括以下的步骤：
    （1）芯片供电，相关参数初始化；
    （2）芯片处于待机状态，气压感应单元工作；
    （3）气压感应单元是否检测到电子雾化装置内部气压模拟信号的变化，如果是，则进入下一步，如果否，则返回上一步；
    （4）气压模拟信号经信号放大模块放大，并通过模数转换模块转换成气压数字信号；
    （5）通过数据处理和校准模块将气压数字信号进行处理和校准，并转换为对应的气流量数字信号；
    （6）控制逻辑模块判断气压数字信号变化值是否达到设定气压变化阈值，如果是，则同时进入步骤（7）和（8），如果否，则返回步骤（2）；
    （7）控制单元产生激活信号并通过激活信号输出端输出到外部控制器以便激活电子雾化装置；
    （8）使能信号输入控制电路是否收到使能信号及通讯接口模块是否收到数据发送请求信号，如果两者都是，则进入下一步，如果否，则返回步骤（2）；
    （9）通讯接口模块将气流量数字信号经内部数据输出引脚输出到外部控制器，返回步骤（2）。
  11. 一种具有气压感应单元的电子雾化装置芯片的工作方法，其特征在于，
    该方法包括以下的步骤：
    (1)芯片供电，相关参数初始化；
    (2)芯片处于待机状态，气压感应单元及温度感应单元工作，同时进入步骤
    （3）和步骤（4）；
    （3）气压感应单元是否检测到电子雾化装置内部气压模拟信号的变化，如果是，则进入步骤（5），如果否，则返回步骤（2）；
    （4）温度感应单元检测到芯片内部温度的温度模拟信号；
    （5）通过电路切换模块依次切换气压模拟信号和温度模拟信号，切换成气压模拟信号时，进入步骤（6），切换成温度模拟信号时，进入步骤（12）；
    （6）气压模拟信号经信号放大模块放大，并通过模数转换模块转换成气压数字信号；
    （7）通过数据处理和校准模块将气压数字信号进行处理和校准，并转换为对应的气流量数字信号；
    （8）控制逻辑模块判断气压数字信号变化值是否达到设定气压变化阈值，如果是，则同时进入步骤（9）、（10）、（12），如果否，则返回步骤（2）；
    （9）控制单元产生激活信号并通过激活信号输出端输出到外部控制器以便激活电子雾化装置；
    （10）判断气流量数字信号是否达到设定最低气流量阈值，如果是，则进入下一步，如果否，则返回步骤（2）；
    （11）输出控制模块产生并输出PWM输出控制信号，返回步骤（2）；
    （12）使能信号输入控制电路是否收到使能信号及通讯接口模块是否收到数据发送请求信号，如果两者都是，则进入下一步，如果否，则返回步骤（2）；
    （13）通讯接口模块将气流量数字信号经内部数据输出引脚输出到外部控制器，返回步骤（2）；
    （14）温度模拟信号经信号放大模块放大，并通过模数转换模块转换成温度数字信号；
    （15）控制逻辑模块判断温度数字信号是否达到设定温度阈值，如果是，则进入下一步，如果否，则返回步骤（2）；
    （16）使芯片停止工作，进行高温或低温保护。
PCT/CN2020/115735 2019-11-05 2020-09-17 具有气压感应单元的电子雾化装置芯片及其工作方法 WO2021088523A1 (zh)

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