CN109393574A - A kind of new electronic cigarette control system - Google Patents
A kind of new electronic cigarette control system Download PDFInfo
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- CN109393574A CN109393574A CN201811384605.XA CN201811384605A CN109393574A CN 109393574 A CN109393574 A CN 109393574A CN 201811384605 A CN201811384605 A CN 201811384605A CN 109393574 A CN109393574 A CN 109393574A
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Abstract
The invention discloses a kind of new electronic cigarette control systems, including DC power supply, MCU, switch control module, reverse isolation module, capacitor, reverse isolation module to be connected between DC power supply and switch control module；The present invention uses the control system integrated by DC power supply, switch control module, MCU, reverse isolation module, both the connecting line quantity between MCU and switch control module had been can be reduced, the input for being equal to voltage signal can be directly provided for MCU again, so that MCU can directly detect corresponding pressure difference without additional addition comparator；Since switch control module is not necessarily to built-in constant-current source, it is only necessary to by the on-off between the vdd terminal that control switch control module is opened or closed and the end SN of air-flow detection switch, to optimize the design of switch control module；The switch control module of the system and the connecting line of MCU are reduced to two, and smaller packaged type can be used, and reduce the area of monolith PCB, effectively reduce cost, have high market popularization value.
Description
Technical field
The present invention relates to a kind of electronic cigarette more particularly to a kind of new electronic cigarette control systems.
Background technique
Currently, the connecting line of switch control and MCU in electronic cigarette control system is primarily present the following two kinds mode: first
Kind of mode as shown in Figure 1, the anode of DC power supply such as rechargeable lithium battery or battery, cathode respectively with MCU, switch control mould
The vdd terminal of block is connected with the end GND, while powering for MCU and switch control module；The both ends of DC power supply connect filter capacitor C,
Filter capacitor C only has filter function；The output signal of constant-current source built in switch control module, switch control module is connected to
The end GATE of MCU, air-flow detection switch are connected on switch control module；When switch control module detects that user executes suction
When cigarette acts, air-flow detection switch is closed, and built-in constant-current source generates current signal and is sent to MCU's in switch control module
The end GATE, after MCU receives this signal, MCU drives the atomizer atomization of electronic cigarette to generate smog.The main disadvantage of the control mode
End is characterized in particular in: the connecting line between switch control module and MCU is 3, so that designer is forced to use the biggish envelope of volume
Dress, but in intending the design of true electronic cigarette, the reality of switch control module and its control circuit can placement region it is smaller, using big
The IC of encapsulation and more cabling will increase design and manufacture difficulty.
The second way is as shown in Fig. 2, by a fixed value resistance R1 is increased in circuit, so that in circuit communication,
The end GND and the end GATE of MCU generates constant pressure difference, and MCU is by detecting the pressure difference control circuit；Filter capacitor C also only has
Filter function.Although the circuit of which reduces one between switch control module and MCU module relative to the circuit of Fig. 1
Connecting line using smaller encapsulation, while reducing the cabling of circuit so that switch control is able to reduce volume, but it exists
One main drawback, the MCU in electronic cigarette is relatively simple single-chip microcontroller, and this relatively simple single-chip microcontroller is for pressure difference
Detection is usually limited as 0-1 detection, i.e., can only detect the on-off of direct current power source voltage value, therefore to directly detect MCU's
The pressure difference at the end GATE and the end GND needs to guarantee the voltage value at the end GATE of MCU, i.e. pressure drop on fixed value resistance R1 is equal to direct current
The voltage value of power supply, but will lead in this way potential between the vdd terminal of switch control module and the end GND it is equal and can not work
Make.Therefore above-mentioned compared with small pressure difference in order to detect, it is necessary to which that additionally one comparator module of addition increases cost, simultaneously in this way
Circuit area is increased, brings unnecessary trouble to encapsulation.
Summary of the invention
Present invention solves the technical problem that being to overcome the deficiencies of existing technologies, a kind of new electronic cigarette control system is provided,
Using the control system integrated by DC power supply, switch control module, MCU, reverse isolation module, MCU and switch both can be reduced
Connecting line quantity between control module, and the input for being equal to voltage signal can be directly provided for MCU, so that MCU is not necessarily to
Additional addition comparator can directly detect corresponding pressure difference；And since switch control module is not necessarily to built-in constant-current source, and only
Need to by the on-off between the vdd terminal and the end SN of the open or close control switch control module of air-flow detection switch, from
And optimize the design of switch control module.
In order to solve the above-mentioned technical problem, the present invention is addressed by following technical proposals:
A kind of new electronic cigarette control system, including for system power supply DC power supply, for being controlled simultaneously system
Driving atomizer generate smog MCU, for detect smoking action signal and to MCU transmission on-off signal switch control mould
Block, the electric signal one-way transmission for exporting DC power supply to switch control module reverse isolation module, be connected to direct current
Capacitor between the positive electrode and negative electrode of power supply, reverse isolation module are connected between DC power supply and switch control module, capacitor
In parallel with switch control module, atomizer is connect with MCU, DC power supply respectively, and atomizer is powered by DC power supply and controlled by MCU
System；If user needs to smoke using electronic cigarette, start to execute smoking movement, smoking movement generates air-flow, generated by air-flow
Smoking action signal is transformed into electric signal, and electric signal transmission is returned to what switch control module, reverse isolation module and capacitor were constituted
Road is switch control module continued power, and smoking action signal is transferred to MCU by switch control module, and MCU is acted according to smoking
Signal controls atomizer and generates smog；Wherein, the connecting line between switch control module and MCU is two, and DC power supply is can
Charged lithium cells or battery, atomizer are atomization heating wire, and fever generates smog after atomization heating wire is powered；Reverse isolation
The function of module can be flowed into and through reverse isolation module for electric signal by specified side, but can not be from reverse isolation mould
The block other side, which flows into, to be passed through, and reverse isolation module can be flowed to from the anode of DC power supply for electric signal in the present invention by embodying,
But reverse isolation module can not be flowed counterflow through；Capacitor not only has filter function, but also together constitutes certainly with reverse isolation module
Circuit is lifted, is powered in smoking process for switch control module；Using by DC power supply, switch control module, MCU, reversely every
From the control system that module integrates, the connecting line quantity between MCU and switch control module not only can be reduced, but also can directly be
MCU provides the input for being equal to voltage signal, so that MCU can directly detect corresponding pressure difference without additional addition comparator；
And it since switch control module is not necessarily to built-in constant-current source, and only needs that control switch is opened or closed by air-flow detection switch
On-off between the vdd terminal and the end SN of control module, to optimize the design of switch control module.
Preferably, the anode of DC power supply is connected to the vdd terminal of MCU, the cathode of DC power supply is connected respectively to MCU's
The end GND, the end GATE of MCU, switch control module the end GND, reverse isolation module is connected to the vdd terminal and switch control of MCU
Between the vdd terminal of module, realizes and change the connecting line between switch control module and MCU by 3 settings of the prior art
The optimization design being arranged at 2.
Preferably, further including the NMOS tube being connected between switch control module and MCU, connecting with switch control module
Air-flow detection switch, the end SN of the vdd terminal of switch control module and switch control module connects, the end SN of switch control module
It is connected to the grid of NMOS tube, the anode of DC power supply is connected to the drain electrode of NMOS tube, the cathode of DC power supply and NMOS tube
Source electrode connection.Switch control module of the invention, reverse isolation module, NMOS tube constitute the part IC；Wherein, system is carried out such as
Lower default value setting: the voltage value of DC power supply is set as V, and the default value of air-flow detection switch is set as disconnecting；In electronic cigarette
Before executing smoking movement, electronic cigarette is in standby；If user needs to smoke using electronic cigarette, starts to execute to smoke and move
Make, when the air-flow that smoking movement generates is more than the airflow threshold of electronic cigarette setting, air-flow detection switch is closed and starts switch control
Molding block, separated, the end the SN potential of switch control module at the end SN of the vdd terminal and switch control module of switch control module
It increases and NMOS tube is driven to be closed, the potential of the source electrode of NMOS tube is equal to the end GATE of the voltage value V, MCU of DC power supply at this time
Voltage value become V, MCU, which is detected, starts that atomizer is driven to generate smog when the voltage value at the end GATE of MCU is V；Work as use
When person terminates smoking movement, air-flow detection switch is again off, and the end the SN potential of switch control module becomes 0, switch control mould
Block is separated with NMOS tube, and MCU and the separated of atomizer make MCU no longer drive atomizer, and atomizer stops generating smog,
The state of system each point changes back to the state before smoking movement again at this time, and electronic cigarette control system reenters standby shape
State；Specifically, if user needs to smoke using electronic cigarette, start to execute smoking movement, when the air-flow that smoking movement generates
More than electronic cigarette setting airflow threshold when air-flow detection switch be closed and start switch control module, switch control module
The end SN of vdd terminal and switch control module it is separated, the end the SN potential of switch control module increases and NMOS tube is driven to be closed,
The voltage value that the potential of the source electrode of NMOS tube is equal to the end GATE of the voltage value V, MCU of DC power supply at this time becomes V, MCU detection
Voltage value to the end GATE of MCU starts that atomizer is driven to generate smog when being V；The potential on the downside of capacitor becomes V simultaneously, due to
The voltage value of capacitor cannot be mutated, therefore the potential on the upside of capacitor can rise to 2V, due to the presence of reverse isolation module, capacitor
On discharge path can only be by switch control module, the current potential at the end SN of switch control module further increases at this time, still
The end SN higher than the current potential of the source electrode of NMOS tube, therefore switch control module can continue to drive NMOS tube；
Preferably, further including the fixed value resistance connecting with the cathode of DC power supply, fixed value resistance is connected on the GND of MCU
Between end and the end GATE of MCU.Fixed value resistance has the defencive function to MCU, specific manifestation are as follows: transports in electronic cigarette control system
During row, the case where DC power supply is likely to occur short circuit, causes to damage MCU and even contingency occur, fixed value resistance
Setting reduces a possibility that DC power supply is shorted, so that fixed value resistance realizes the defencive function to MCU.
The specific connection type of circuit of new electronic cigarette control system of the invention are as follows: the anode of DC power supply is directly connected to
In the drain electrode of the vdd terminal, NMOS tube of MCU, while being connected to after reverse isolation module the vdd terminal and electricity of switch control module
One end of appearance；The cathode of DC power supply is connected directly between the end GND of MCU, while the GATE of MCU is connected to after fixed value resistance
End, the end GND of the source electrode of NMOS tube, switch control module, capacitor the other end；Air-flow detection switch and switch control module connect
It connects；The end SN of switch control module is connected to the grid of NMOS tube.
Preferably, air-flow detection switch is gas sensor, gas sensor detects to obtain the gas that smoking movement generates
Comparing result is flowed and compares and obtain with the airflow threshold of default, when the air-flow that smoking movement generates is more than electronic cigarette
Gas sensor starts switch control module, gas sensor inspection with higher according to comparing result when the airflow threshold of setting
Survey accuracy.
The present invention has significant technical effect: controlling using by DC power supply, switch due to using above technical scheme
The integrated control system of molding block, MCU, reverse isolation module, both can be reduced the connection line number between MCU and switch control module
Amount, and the input for being equal to voltage signal can be directly provided for MCU, so that MCU can be direct without additional addition comparator
Detect corresponding pressure difference；And it since switch control module is not necessarily to built-in constant-current source, and only needs through the disconnected of air-flow detection switch
The on-off between the vdd terminal of control switch control module and the end SN is opened or is closed, to optimize switch control module
Design；The switch control module of the system and the connecting line of MCU are reduced to two, and smaller packaged type can be used, reduce
The area of monolith PCB, effectively reduces cost, has high market popularization value.
Detailed description of the invention
Fig. 1 is a kind of operation principle schematic diagram of electronic cigarette control system in the prior art.
Fig. 2 is the operation principle schematic diagram of another electronic cigarette control system in the prior art.
Fig. 3 is the operation principle schematic diagram of new electronic cigarette control system embodiment of the invention.
Specific embodiment
Present invention is further described in detail with embodiment with reference to the accompanying drawing.
A kind of new electronic cigarette control system, as shown in figure 3, including for the DC power supply 2 of system power supply, for system
It is controlled and atomizer 1 is driven to generate the MCU3 of smog, for detecting smoking action signal and sending on-off signal to MCU3
Switch control module 5, the electric signal one-way transmission for exporting DC power supply 2 to switch control module 5 reverse isolation
Module 8, the capacitor 7 being connected between the positive electrode and negative electrode of DC power supply 2, reverse isolation module 8 are connected to DC power supply 2 and open
It closes between control module 5, capacitor 7 is in parallel with switch control module 5, and atomizer 1 is connect with MCU3, DC power supply 2 respectively；By gas
The raw smoking action signal of miscarriage is transformed into electric signal, and electric signal transmission is to switch control module 5, reverse isolation module 8 and electricity
Holding the circuit that 7 are constituted is 5 continued power of switch control module, and smoking action signal is transferred to MCU3 by switch control module 5,
MCU3 generates smog according to smoking action signal driving atomizer 1.
In the present embodiment, the anode of DC power supply 2 is connected to the vdd terminal of MCU3, and the cathode of DC power supply 2 is connected respectively to
The end GND of MCU3, the end GATE of MCU3, switch control module 5 the end GND, reverse isolation module 8 is connected to the vdd terminal of MCU3
Between the vdd terminal of switch control module 5.
It further include the NMOS tube 9 being connected between switch control module 5 and MCU3 and switch control mould in the present embodiment
The air-flow detection switch 6 that block 5 connects, the vdd terminal of switch control module 5 are connect with the end SN of switch control module 5, switch control
The end SN of module 5 is connected to the grid of NMOS tube 9, and the anode of DC power supply 2 is connected to the drain electrode of NMOS tube 9, DC power supply 2
Cathode is connect with the source electrode of NMOS tube 9.
It further include the fixed value resistance 4 being connect with the cathode of DC power supply 2 in the present embodiment, fixed value resistance 4 is connected on MCU3
The end GND and MCU3 the end GATE between.
In the present embodiment, air-flow detection switch 6 is gas sensor.
The specific connection type of circuit of the new electronic cigarette control system of the present embodiment are as follows: the anode of DC power supply directly connects
Connect the drain electrode of the vdd terminal, NMOS tube in MCU, at the same be connected to after reverse isolation module the vdd terminal of switch control module with
One end of capacitor；The cathode of DC power supply is connected directly between the end GND of MCU, while being connected to MCU's after fixed value resistance
The end GATE, the source electrode of NMOS tube, the end GND of switch control module, capacitor the other end；Air-flow detection switch and switch control mould
Block connection；The end SN of switch control module is connected to the grid of NMOS tube.
Wherein, the connecting line between switch control module and MCU is two, and DC power supply is rechargeable lithium battery or electric power storage
Pond, atomizer are atomization heating wire, and fever generates smog after atomization heating wire is powered.
In the present embodiment, switch control module, reverse isolation module, NMOS tube constitute the part IC；Wherein, system is carried out
Following default value setting: the voltage value of DC power supply is set as V, and the default value of air-flow detection switch is set as disconnecting；In electronics
Before cigarette executes smoking movement, electronic cigarette is in standby, at this time since air-flow detection switch default setting is to open, switch
The vdd terminal of control module is separated with the end SN, and NMOS tube is in an off state, and DC power supply is connected directly between capacitor both ends and is
Capacitor charging, due to the presence of reverse isolation module, so that the electric signal by reverse isolation module can only be from DC power supply
Direction one-way flow from anode to switch control module, and cannot from switch control module to DC power supply anode direction flow
It is dynamic, thus switch control module, reverse isolation module, DC power supply positive extreme direction on current loop is not present so that fixed
Pressure drop is not generated on value resistance, therefore the potential at the end GATE of MCU is zero；If user needs to smoke using electronic cigarette, start
It executes smoking to act, when the air-flow that smoking movement generates is more than the airflow threshold of electronic cigarette setting, air-flow detection switch is closed simultaneously
Start switch control module, separated, the switch control module at the end SN of the vdd terminal and switch control module of switch control module
The end SN potential increase and NMOS tube driven to be closed, at this time the potential of the source electrode of NMOS tube be equal to DC power supply voltage value V,
The voltage value at the end GATE of MCU becomes V, and MCU, which is detected, starts that atomizer is driven to generate when the voltage value at the end GATE of MCU is V
Smog；When user terminates smoking movement, air-flow detection switch is again off, and the end the SN potential of switch control module becomes 0,
Switch control module is separated with NMOS tube, and MCU and the separated of atomizer make MCU no longer drive atomizer, and atomizer stops
Smog is only generated, the state of system each point changes back to the state before smoking movement again at this time, and electronic cigarette control system is again
Into standby mode.
In short, the foregoing is merely presently preferred embodiments of the present invention, it is all according to equalization made by scope of the present invention patent
Variation and modification, shall all be covered by the patent of the invention.
Claims (4)
1. a kind of new electronic cigarette control system, it is characterised in that: including for system power supply DC power supply (2), for being
System is controlled and atomizer (1) is driven to generate the MCU (3) of smog, for detecting smoking action signal and sending to MCU (3)
The switch control module (5) of on-off signal, the electric signal one-way transmission for exporting DC power supply (2) are to switch control module
(5) reverse isolation module (8), the capacitor (7) being connected between the positive electrode and negative electrode of DC power supply (2), reverse isolation module
(8) it is connected between DC power supply (2) and switch control module (5), capacitor (7) is in parallel with switch control module (5), atomizer
(1) it is connect respectively with MCU (3), DC power supply (2)；Electric signal is transformed by the smoking action signal that air-flow generates, electric signal passes
It is defeated by switch control module (5), the circuit of reverse isolation module (8) and capacitor (7) composition is that switch control module (5) persistently supply
Smoking action signal is transferred to MCU (3) by electricity, switch control module (5), and MCU (3) drives atomizer according to smoking action signal
(1) smog is generated.
2. a kind of new electronic cigarette control system according to claim 1, it is characterised in that: the anode of DC power supply (2)
Be connected to the vdd terminal of (3) MCU, the cathode of DC power supply (2) be connected respectively to the end GND of MCU (3), MCU (3) the end GATE,
The end GND of switch control module (5), reverse isolation module (8) are connected to vdd terminal and switch control module (5) of MCU (3)
Between vdd terminal.
3. a kind of new electronic cigarette control system according to claim 1 or 2, it is characterised in that: further include being connected to out
The air-flow detection switch (6) closing the NMOS tube (9) between control module (5) and MCU (3), being connect with switch control module (5),
The vdd terminal of switch control module (5) is connect with the end SN of switch control module (5), and the end SN of switch control module (5) is connected to
The grid of NMOS tube (9), the anode of DC power supply (2) are connected to the drain electrode of NMOS tube (9), the cathode of DC power supply (2) with
The source electrode of NMOS tube (9) connects.
4. a kind of new electronic cigarette control system according to claim 3, it is characterised in that: air-flow detection switch (6) is
Gas sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811384605.XA CN109393574B (en) | 2018-11-20 | 2018-11-20 | Electronic cigarette control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811384605.XA CN109393574B (en) | 2018-11-20 | 2018-11-20 | Electronic cigarette control system |
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| Publication Number | Publication Date |
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| CN109393574A true CN109393574A (en) | 2019-03-01 |
| CN109393574B CN109393574B (en) | 2021-07-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811384605.XA Active CN109393574B (en) | 2018-11-20 | 2018-11-20 | Electronic cigarette control system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110250573A (en) * | 2019-05-21 | 2019-09-20 | 西安拓尔微电子有限责任公司 | A kind of novel electronic cigarette control system |
| CN112493548A (en) * | 2020-12-11 | 2021-03-16 | 西安稳先半导体科技有限责任公司 | Electronic cigarette, cigarette cartridge for electronic cigarette and key control chip |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110250573A (en) * | 2019-05-21 | 2019-09-20 | 西安拓尔微电子有限责任公司 | A kind of novel electronic cigarette control system |
| CN110250573B (en) * | 2019-05-21 | 2024-02-23 | 杭州拓尔微电子有限公司 | Novel electronic cigarette control system |
| CN112493548A (en) * | 2020-12-11 | 2021-03-16 | 西安稳先半导体科技有限责任公司 | Electronic cigarette, cigarette cartridge for electronic cigarette and key control chip |
| CN112493548B (en) * | 2020-12-11 | 2024-01-12 | 西安稳先半导体科技有限责任公司 | Electronic cigarette, cartridge for electronic cigarette and key control chip |
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| CN109393574B (en) | 2021-07-16 |
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