CN209284325U - New electronic cigarette control system - Google Patents
New electronic cigarette control system Download PDFInfo
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- CN209284325U CN209284325U CN201821911651.6U CN201821911651U CN209284325U CN 209284325 U CN209284325 U CN 209284325U CN 201821911651 U CN201821911651 U CN 201821911651U CN 209284325 U CN209284325 U CN 209284325U
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Abstract
The utility model discloses a kind of new electronic cigarette control system, including DC power supply, MCU, switch control module, reverse isolation module, capacitor, capacitor are in parallel with switch control module；The utility model 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；And since switch control module is not necessarily to built-in constant-current source, and the on-off between the vdd terminal that control switch control module is opened or closed and the end SN by air-flow detection switch is only needed, 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 utility model 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, since MCU and switch control module are powered by same DC power supply, in order to which guarantee both can be simultaneously
Work, when DC power supply passes through fixed value resistance R1 the pressure drop that generates cannot the vdd terminal of excessive otherwise switch control module may owe
Pressure, and MCU exactly detects the pressure difference and works；MCU in electronic cigarette is relatively simple single-chip microcontroller, this relatively simple
Single-chip microcontroller is usually limited as 0-1 detection for the detection of pressure difference, i.e., can only detect the on-off of direct current power source voltage value, therefore to
The end GATE of MCU and the pressure difference at the end GND are directly detected, needs to guarantee the voltage value at the end GATE of MCU, is i.e. on fixed value resistance R1
Pressure drop be equal to the voltage value of DC power supply, but will lead to potential between the vdd terminal of switch control module and the end GND in this way
It is equal and can not work.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 in this way
Cost, while circuit area is increased, to encapsulation bring unnecessary trouble.
Utility model content
The technical issues of the utility model solves is to overcome the deficiencies of existing technologies, and provides a kind of new electronic cigarette control
System, using the control system integrated by DC power supply, switch control module, MCU, reverse isolation module, both can be reduced MCU with
Connecting line quantity between switch control module, and the input for being equal to voltage signal can be directly provided for MCU, so that MCU
Corresponding pressure difference can be directly detected without additionally adding comparator；And since switch control module is not necessarily to built-in constant-current source,
And only need on-off between the vdd terminal and the end SN by the open or close control switch control module of air-flow detection switch i.e.
Can, to optimize the design of switch control module.
In order to solve the above-mentioned technical problem, the utility model is addressed by following technical proposals:
New electronic cigarette control system, including for system power supply DC power supply, for being controlled system and being driven
Atomizer generate smog MCU, for detect smoking action signal and to MCU send on-off signal switch control module, use
In the electric signal one-way transmission for exporting DC power supply to switch control module reverse isolation module, be connected to DC power supply
Capacitor between positive electrode and negative electrode, capacitor is in parallel with switch control module, and atomizer is connect with MCU, DC power supply respectively, atomization
Device is powered by DC power supply and is controlled by MCU；The anode of DC power supply is connected to the vdd terminal of MCU, the end GATE of MCU, switch control
The vdd terminal of molding block, the cathode of DC power supply are connected respectively to the end GND at the end GND of MCU, switch control module, reverse isolation
Module is connected between the end GND of MCU and the end GND of switch control module, and realizing will be between switch control module and MCU
Connecting line is changed to the optimization design of 2 settings by 3 settings of the prior art；If user needs to smoke using electronic cigarette,
Start to execute smoking movement, smoking movement generates air-flow, is transformed into electric signal, electric signal by the smoking action signal that air-flow generates
It is transferred to switch control module, the circuit that reverse isolation module and capacitor are constituted is switch control module continued power, switch control
Smoking action signal is transferred to MCU by molding block, and MCU generates smog according to smoking action signal control atomizer.Wherein, it switchs
Connecting line between control module and MCU is two, and DC power supply is rechargeable lithium battery or battery, and atomizer is atomization electricity
Heated filament, fever generates smog after atomization heating wire is powered；The function of reverse isolation module is that electric signal can be by specified one
Side flows into and through reverse isolation module, but can not flow into and pass through from the reverse isolation module other side, and it is practical new to be embodied in this
Reverse isolation module can be flowed to from the anode of DC power supply for electric signal in type, but can not flow counterflow through reverse isolation mould
Block；Capacitor not only has filter function, but also together constitutes boostrap circuit with reverse isolation module, is switch control in smoking process
Module for power supply processed；Using the control system integrated by DC power supply, switch control module, MCU, reverse isolation module, can subtract
Connecting line quantity between few MCU and switch control module, and the input for being equal to voltage signal can be directly provided for MCU,
So that MCU can directly detect corresponding pressure difference without additional addition comparator；And since switch control module is without built-in
Constant-current source, and only need between the vdd terminal that control switch control module is opened or closed and the end SN by air-flow detection switch
On-off, to optimize the design of switch control module.
Preferably, further including the PMOS 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 PMOS tube, the cathode of DC power supply is connected to the drain electrode of PMOS tube, anode and the PMOS tube of DC power supply
Source electrode connection.The switch control module of the utility model, reverse isolation module, PMOS tube constitute the part IC；Wherein, to system into
The following default value setting of row: 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 electricity
Before sub- cigarette executes smoking movement, electronic cigarette is in standby；If user needs to smoke using electronic cigarette, start to execute suction
Cigarette movement, 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 out
Close control module, separated, the end SN of switch control module at the end SN of the vdd terminal and switch control module of switch control module
Potential reduces and stops driving PMOS tube, and PMOS tube is closed and is connected, and electric current flows to DC power supply from the anode of DC power supply
Cathode, the potential of the vdd terminal of switch control module becomes zero at this time, and the potential of the drain electrode of PMOS tube is equal to the cathode of DC power supply
Potential, the voltage value at the end GATE of MCU become 0, MCU detect MCU the end GATE voltage value be 0 when start drive atomizer
Generate smog；When user terminates smoking movement, air-flow detection switch is again off, and MCU and the separated of atomizer make MCU
Atomizer is no longer driven, atomizer stops generating smog, and the end SN of switch control module drives PMOS tube again, is at this time
The state of system each point changes back to the state before smoking movement again, and electronic cigarette control system reenters standby mode；Specifically
For, if user needs to smoke using electronic cigarette, start to execute smoking movement, when the air-flow that smoking movement generates is more than electronics
Air-flow detection switch is closed and starts switch control module when the airflow threshold of cigarette setting, the vdd terminal of switch control module with open
The separated of the end SN of control module is closed, the end the SN potential of switch control module reduces and stops driving PMOS tube, and PMOS tube is closed
It closes and is connected, electric current flows to the cathode of DC power supply from the anode of DC power supply, at this time the potential of the vdd terminal of switch control module
It becomes zero, it is 0 that the upside potential of capacitor, which synchronizes and is reduced to potential,；Since the pressure difference of capacitor cannot be mutated, the downside of capacitor
It is 0 that potential, which synchronizes and is reduced to potential,；Due to the presence of reverse isolation module, DC power supply can not be capacitor charging at this time, therefore
Capacitor keeps the pressure difference for being equal to direct current power source voltage, powers for switch control module；Wherein, the potential of the drain electrode of PMOS tube
Equal to the negative potential of DC power supply, the voltage value at the end GATE of MCU becomes the voltage value that 0, MCU detects the end GATE of MCU
Start that atomizer is driven to generate smog when being 0；The potential on the upside of capacitor becomes 0 simultaneously, since the voltage value of capacitor cannot be mutated,
Therefore the potential on the downside of capacitor can drop to-V, and due to the presence of reverse isolation module, the discharge path on capacitor can only pass through
Switch control module, the function of capacitor is switch control module power supply at this time.
Preferably, further including the fixed value resistance connecting with the cathode of DC power supply, fixed value resistance is connected on the VDD of MCU
Between end and the end GATE of MCU.If user needs to smoke using electronic cigarette, starts to execute smoking movement, be produced when smoking acts
Air-flow detection switch is closed and starts switch control module, switch control when raw air-flow is more than the airflow threshold of electronic cigarette setting
The end SN of the vdd terminal and switch control module of module it is separated, the end the SN potential of switch control module reduces and stops driving
PMOS tube, PMOS tube closure and conducting, electric current flow to the cathode of DC power supply from the anode of DC power supply by fixed value resistance, this
When switch control module the potential of vdd terminal become zero, it is 0 that the upside potential of capacitor, which synchronizes and is reduced to potential,；Fixed value resistance tool
There are the defencive function to MCU, specific manifestation are as follows: in electronic cigarette control system operational process, DC power supply is likely to occur short
The case where connecing, causes to damage MCU and even contingency occurs, and what the setting of fixed value resistance reduced that DC power supply is shorted can
Energy property, so that fixed value resistance realizes the defencive function to MCU.
The specific connection type of circuit of the new electronic cigarette control system of the utility model are as follows: the anode of DC power supply is directly
It is connected to the vdd terminal of MCU, while being connected to the vdd terminal and capacitor of the source electrode of PMOS tube, switch control module by fixed value resistance
One end；The cathode of DC power supply is connected directly between the drain electrode at the end GND, PMOS tube of MCU, while connecting by reverse isolation module
It is connected to the end GND and the other end of capacitor of switch control module；Air-flow detection switch is connect with switch control module；Switch control
The end SN of molding block is connected to the grid of PMOS 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 utility model has significant technical effect: using by DC power supply, opens due to using above technical scheme
The integrated control system of control module, MCU, reverse isolation module is closed, both can be reduced the connection between MCU and switch control module
Line number amount, and the input for being equal to voltage signal can be directly provided for MCU, so that MCU is without additional addition comparator
Directly detect corresponding pressure difference；And it since switch control module is not necessarily to built-in constant-current source, and only needs through air-flow detection switch
The vdd terminal that control switch control module is opened or closed and the end SN between on-off, to optimize switch control mould
The design of block；The switch control module of the system and the connecting line of MCU are reduced to two, and smaller packaged type can be used, subtract
The small 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 the new electronic cigarette control system embodiment of the utility model.
Specific embodiment
The utility model is described in further detail with embodiment with reference to the accompanying drawing.
New electronic cigarette control system, as shown in figure 3, including for the DC power supply 2 of system power supply, for being carried out to system
It controls and atomizer 1 is driven to generate the MCU3 of smog, for detecting smoking action signal and sending opening for on-off signal to MCU3
Close 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, capacitor 7 is in parallel with switch control module 5, and atomizer 1 is distinguished
It is connect with MCU3, DC power supply 2；The anode of DC power supply 2 is connected to the vdd terminal of MCU3, the end GATE of MCU3, switch control mould
The vdd terminal of block 5, the cathode of DC power supply 2 are connected respectively to the end GND at the end GND of MCU3, switch control module 5, reverse isolation
Module 8 is connected between the end GND of MCU3 and the end GND of switch control module 5；The smoking action signal transformation generated by air-flow
At electric signal, the circuit that electric signal transmission is constituted to switch control module 5, reverse isolation module 8 and capacitor 7 is switch control mould
Smoking action signal is transferred to MCU3 by 5 continued power of block, switch control module 5, and MCU3 drives mist according to smoking action signal
Change device 1 and generates smog.
It further include the PMOS 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 PMOS tube 9, and the cathode of DC power supply 2 is connected to the drain electrode of PMOS tube 9, DC power supply 2
Anode is connect with the source electrode of PMOS tube 9.
It further include the fixed value resistance 4 being connect with the anode of DC power supply 2 in the present embodiment, fixed value resistance 4 is connected on MCU3
Vdd terminal 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
The vdd terminal in MCU is connect, while being connected to the source electrode of PMOS tube, the vdd terminal of switch control module and capacitor by fixed value resistance
One end；The cathode of DC power supply is connected directly between the drain electrode at the end GND, PMOS tube of MCU, while connecting by reverse isolation module
To the end GND of switch control module and the other end of capacitor；Air-flow detection switch is connect with switch control module；Switch control
The end SN of module is connected to the grid of PMOS 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, PMOS 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 PMOS 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 reduce and stop driving PMOS tube, PMOS tube closure and be connected, electric current flows to direct current from the anode of DC power supply
The cathode of power supply, the potential of the vdd terminal of switch control module becomes zero at this time, and the upside potential of capacitor, which synchronizes, is reduced to the potential to be
0；Since the pressure difference of capacitor cannot be mutated, it is 0 that the downside potential of capacitor, which synchronizes and is reduced to potential,；Due to reverse isolation module
Presence, at this time DC power supply can not be capacitor charging, therefore capacitor keep one be equal to direct current power source voltage pressure difference, to open
Close control module power supply；Wherein, the potential of the drain electrode of PMOS tube is equal to the negative potential of DC power supply, the electricity at the end GATE of MCU
Pressure value becomes 0, MCU and detects that starting driving atomizer when the voltage value at the end GATE of MCU is 0 generates smog；When user ties
When beam smoking acts, air-flow detection switch is again off, and MCU and the separated of atomizer make MCU no longer drive atomizer, is atomized
Device stops generating smog, and the end SN of switch control module drives PMOS tube again, and the state of system each point becomes again at this time
The state before smoking movement is returned to, electronic cigarette control system reenters standby mode.
In short, the above is only the preferred embodiment of the present invention, it is all according to present utility model application the scope of the patents institute
The equivalent changes and modifications of work should all belong to the covering scope of the utility model patent.
Claims (4)
1. new electronic cigarette control system, it is characterised in that: including for system power supply DC power supply (2), for system into
Row controls and atomizer (1) is driven to generate the MCU (3) of smog, for detecting smoking action signal and sending on-off signal to MCU
Switch control module (5), for the electric signal one-way transmission that exports DC power supply (2) to the anti-of switch control module (5)
To isolation module (8), the capacitor (7) being connected between the positive electrode and negative electrode of DC power supply (2), capacitor (7) and switch control mould
Block (5) is in parallel, and atomizer (1) is connect with MCU (3), DC power supply (2) respectively；The anode of DC power supply (2) is connected to MCU (3)
Vdd terminal, the end GATE of MCU (3), switch control module (5) vdd terminal, the cathode of DC power supply (2) is connected respectively to MCU
(3) end GND at the end GND, switch control module (5), reverse isolation module (8) is connected to the end GND of MCU (3) and switch is controlled
Between the end GND of molding block (5).
2. new electronic cigarette control system according to claim 1, it is characterised in that: further include being connected to switch control mould
PMOS tube (9) between block (5) and MCU (3), the air-flow detection switch (6) being connect with switch control module (5), switch control
The vdd terminal of 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 PMOS tube
(9) grid, the cathode of DC power supply (2) are connected to the drain electrode of PMOS tube (9), anode and PMOS tube (9) of DC power supply (2)
Source electrode connection.
3. new electronic cigarette control system according to claim 1 or 2, it is characterised in that: further include and DC power supply (2)
Anode connection fixed value resistance (4), fixed value resistance (4) is connected between the vdd terminal of MCU (3) and the end GATE of MCU (3).
4. 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 |
|---|---|---|---|
| CN201821911651.6U CN209284325U (en) | 2018-11-20 | 2018-11-20 | New electronic cigarette control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821911651.6U CN209284325U (en) | 2018-11-20 | 2018-11-20 | New electronic cigarette control system |
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| Publication Number | Publication Date |
|---|---|
| CN209284325U true CN209284325U (en) | 2019-08-23 |
Family
ID=67643949
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821911651.6U Active CN209284325U (en) | 2018-11-20 | 2018-11-20 | New electronic cigarette control system |
Country Status (1)
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| CN (1) | CN209284325U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021243944A1 (en) * | 2020-05-30 | 2021-12-09 | 杭州尚格半导体有限公司 | Electronic atomization device and control circuit therefor |
-
2018
- 2018-11-20 CN CN201821911651.6U patent/CN209284325U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021243944A1 (en) * | 2020-05-30 | 2021-12-09 | 杭州尚格半导体有限公司 | Electronic atomization device and control circuit therefor |
| KR20210151769A (en) * | 2020-05-30 | 2021-12-14 | 항저우 선갓 세미컨덕터 컴퍼니 리미티드 | Electronic atomizer and its control circuit |
| JP2022539624A (en) * | 2020-05-30 | 2022-09-13 | 杭州尚格半▲導▼体有限公司 | Electronic atomizer and its control circuit |
| JP7154383B2 (en) | 2020-05-30 | 2022-10-17 | 杭州尚格半▲導▼体有限公司 | Electronic atomizer and its control circuit |
| KR102501324B1 (en) | 2020-05-30 | 2023-02-17 | 항저우 선갓 세미컨덕터 컴퍼니 리미티드 | Electronic atomizer and its control circuit |
| US11918048B2 (en) | 2020-05-30 | 2024-03-05 | Hangzhou Sungod Semiconductor Co., Ltd. | Electronic atomization device and control circuit thereof |
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