CN108783607A - A kind of circuit for changing control mode on electronic cigarette - Google Patents
A kind of circuit for changing control mode on electronic cigarette Download PDFInfo
- Publication number
- CN108783607A CN108783607A CN201810959812.7A CN201810959812A CN108783607A CN 108783607 A CN108783607 A CN 108783607A CN 201810959812 A CN201810959812 A CN 201810959812A CN 108783607 A CN108783607 A CN 108783607A
- Authority
- CN
- China
- Prior art keywords
- mcu
- vdd
- switch control
- control module
- switch
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000003571 electronic cigarette Substances 0.000 title claims abstract description 15
- 238000001514 detection method Methods 0.000 claims abstract description 4
- 230000005611 electricity Effects 0.000 claims description 3
- 239000003990 capacitor Substances 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 4
- 230000009466 transformation Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 3
- 230000000391 smoking effect Effects 0.000 description 3
- 238000000889 atomisation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Classifications
-
- A24F47/008—
-
- 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
- H05B1/0202—Switches
-
- 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
- H05B1/0252—Domestic applications
Landscapes
- Continuous-Control Power Sources That Use Transistors (AREA)
Abstract
The present invention provides a kind of circuit for changing control mode on electronic cigarette, constant-current source built in switch control module is connected with switch SW, the on off operating mode of detection switch SW；The ends GATE of the VDD and MCU of switch control module are connected directly, and the VDD of switch control module is connected after resistance R1 with the VDD of MCU, and the vdd terminal of MCU and the anode of battery are connected directly；Altogether, capacitance C1 is filter capacitor by switch control module, MCU, switch SW and capacitance C1, and the other end of capacitance C1 is connected with the VDD of switch control module.By the connection type and working method of circuit belonging to transformation, the I/O port number for switching control is reduced to 3 from 4, smaller packaged type may be used, and then can reduce the area of monoblock PCB, can effectively reduce cost the present invention；Meanwhile the signal that MCU receives becomes voltage signal from current signal, only need comparator built in MCU can control circuit normal work, be more convenient MCU processing.
Description
Technical field
The present invention relates to circuit field, especially a kind of control circuit of electronic cigarette.
Background technology
Electronic cigarette switch control at this stage with the connection mode of MCU as shown in Figure 1, the positive and negative anodes of accumulator respectively with MCU
And the VDD of switch control is connected with GND, while being MCU and switch control power supply.The both ends of accumulator connect capacitor filtering capacitance
C1.The built-in constant-current source of switch control, output signal are connected to the ends GATE of MCU, and microphone switch SW is connected in switch control.When
When switch control detects the smoking action of user, switch SW is closed, and built-in constant-current source generates current signal in switch control
The ends GATE of MCU are sent to, after receiving this signal, MCU executes the atomization action of electronic cigarette.
The line control mode of switch control at this stage is feasible, but there are following two points drawbacks：First, it uses
When this kind of connection mode, the IO for switching control is at least 4, this can make designer be forced to use the larger encapsulation of volume, but
Be in quasi- true electronic cigarette design, the reality of switch control and peripheral circuit can placement region it is smaller, use the IC encapsulated greatly
Design and manufacture difficulty can be increased；Secondly, what switch control was sent to the ends GATE of MCU is current signal, which is received by MCU
To later, it is also necessary to which processing is other signals, such as voltage signal in MCU, just can easily be identified by MCU, is increased in this way
Add the work of MCU, while the current signal may make MCU generate heat, influences its temperature detecting module.
Invention content
For overcome the deficiencies in the prior art, the present invention provides a kind of novel electronic cigarette control circuit connection controlling party
Formula can reduce the I/O port quantity of switch control, reduce the package dimension of switch control, and directly can provide voltage for MCU
Signal inputs.
The technical solution adopted by the present invention to solve the technical problems is：
A kind of circuit for changing control mode on electronic cigarette, including switch control module, MCU blocks and corresponding outer
Circuit is enclosed, constant-current source built in the switch control module is connected with switch SW, the on off operating mode of detection switch SW；Switch control
The ends GATE of the VDD and MCU of module are connected directly, and the VDD of switch control module is connected after resistance R1 with the VDD of MCU,
The vdd terminal of MCU and the anode of battery are connected directly；Altogether, capacitance C1 is by switch control module, MCU, switch SW and capacitance C1
Filter capacitor, the other end of capacitance C1 are connected with the VDD of switch control module.
When user smokes, SW is closed, and the constant-current source of switch control module is started to work, at this time the vdd terminal of MCU by
It is connected directly in the anode with battery, voltage value is equal to the voltage of battery；The current signal that constant-current source pulls out passes through R1 so that
The vdd voltage of switch control module is less than cell voltage, and the ends GATE of MCU and the VDD of switch control are connected directly, the two electricity
Position is equal, so the voltage of vdd terminal of the GATE terminal voltages of MCU less than MCU, to generate constant pressure difference, MCU detects the pressure
It can start to work after difference.
The beneficial effects of the invention are as follows the connection types and working method by circuit belonging to transformation, switch the I/O port of control
Number is reduced to 3 from 4, smaller packaged type may be used, and then can reduce the area of monoblock PCB, can be effective
Reduce cost；Meanwhile the signal that MCU receives becomes voltage signal from current signal, only needs the comparator built in MCU i.e. controllable
The normal work of circuit is more convenient MCU processing.
Description of the drawings
Fig. 1 is the line schematic diagram of existing electronic cigarette switch control and MCU.
Fig. 2 is the line schematic diagram of electronic cigarette of the present invention switch control and MCU.
Fig. 3 is the pressure difference schematic diagram at the ends GATE and vdd terminal of MCU：VDD is the vdd terminal voltage value of MCU, VDD- in figure
Iconst*R1 is the GATE terminal voltage values of MCU.
Specific implementation mode
Present invention will be further explained below with reference to the attached drawings and examples.
The present invention designs a kind of novel line switched between control and MCU by the external design for introducing pressure difference
Control mode simplifies and optimizes existing circuit design.
A kind of circuit for changing control mode on electronic cigarette, including switch control module, MCU blocks and corresponding outer
Circuit is enclosed, constant-current source built in the switch control module is connected with switch SW, the on off operating mode of detection switch SW；Switch control
The ends GATE of the VDD and MCU of module are connected directly, and the VDD of switch control module is connected after resistance R1 with the VDD of MCU,
The vdd terminal of MCU and the anode of battery are connected directly；Altogether, capacitance C1 is by switch control module, MCU, switch SW and capacitance C1
Filter capacitor, the other end of capacitance C1 are connected with the VDD of switch control module.
When user smokes, SW is closed, and the constant-current source of switch control module is started to work, at this time the vdd terminal of MCU by
It is connected directly in the anode with battery, voltage value is equal to the voltage of battery；The current signal that constant-current source pulls out passes through R1 so that
The vdd voltage of switch control module is less than cell voltage, and the ends GATE of MCU and the VDD of switch control are connected directly, the two electricity
Position is equal, so the voltage of vdd terminal of the GATE terminal voltages of MCU less than MCU, to generate constant pressure difference, MCU detects the pressure
It can start to work after difference.
As shown in Fig. 2, the positive and negative anodes of accumulator are separately connected the ends VDD and GND of MCU, while being connected to filter capacitor C1
Both sides, i.e. accumulator, MCU, switch control, switch SW and capacitance C1 are altogether.The anode of battery is worth resistance R1 admittedly by one
It is connected to the ends GATE of the vdd terminal and MCU of switch control afterwards.Switch SW is connected in switch control.
Power supply is powered to integrated circuit, and the vdd terminal of MCU and the voltage value of power supply are equal at this time, are not yet detecting user
Smoking action when, switch control on SW switch it is in the open state, switch control inside current source do not work, i.e. on R1
There is no electric current process, i.e., the vdd terminal voltage value at the ends GATE of MCU, the vdd terminal of MCU and switch control is equal when not working,
The voltage value provided for external power supply.
Specific work process is：
When the smoking of system detectio to user action, switch SW is closed, and the constant-current source inside switch control starts work
Make, it is constant pull out an Iconst electric current, at this time the vdd terminal voltage value of MCU still equal to power supply voltage value, and constant-current source draw
The current signal gone out flows through resistance R1 so that the vdd terminal voltage value for switching control is (VDD-Iconst*R1), due to MCU's
The ends GATE and the vdd terminal of switch control are connected directly, then the GATE terminal voltage values of MCU are also (VDD-Iconst*R1), therefore
The voltage at the ends VDD and GATE of MCU as shown in figure 3, generate the constant pressure difference that a size is Iconst*R1, MCU between the two
When internal comparator detects the pressure difference, start the nebulisation operation for executing electronic cigarette.
Claims (1)
1. a kind of circuit for changing control mode on electronic cigarette, it is characterised in that：
The circuit for changing control mode on electronic cigarette, including switch control module, MCU blocks and corresponding periphery electricity
Road, constant-current source built in the switch control module are connected with switch SW, the on off operating mode of detection switch SW；Switch control module
VDD and the ends GATE of MCU be connected directly, and the VDD of switch control module is connected after resistance R1 with the VDD of MCU, MCU
Vdd terminal and the anode of battery be connected directly；Altogether, capacitance C1 is filter by switch control module, MCU, switch SW and capacitance C1
Wave capacitance, the other end of capacitance C1 are connected with the VDD of switch control module；
When user smokes, SW is closed, and the constant-current source of switch control module is started to work, at this time the vdd terminal of MCU due to
The anode of battery is connected directly, and voltage value is equal to the voltage of battery；The current signal that constant-current source pulls out passes through R1 so that switch
The vdd voltage of control module is less than cell voltage, and the ends GATE of MCU and the VDD of switch control are connected directly, the two current potential phase
Deng, so the voltage of vdd terminal of the GATE terminal voltages of MCU less than MCU, to generate constant pressure difference, after MCU detects the pressure difference
It can start to work.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810959812.7A CN108783607A (en) | 2018-08-20 | 2018-08-20 | A kind of circuit for changing control mode on electronic cigarette |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810959812.7A CN108783607A (en) | 2018-08-20 | 2018-08-20 | A kind of circuit for changing control mode on electronic cigarette |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108783607A true CN108783607A (en) | 2018-11-13 |
Family
ID=64080741
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810959812.7A Pending CN108783607A (en) | 2018-08-20 | 2018-08-20 | A kind of circuit for changing control mode on electronic cigarette |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108783607A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109393573A (en) * | 2018-11-20 | 2019-03-01 | 杭州拓尔微电子有限公司 | New electronic cigarette control system |
| CN110250575A (en) * | 2019-06-06 | 2019-09-20 | 西安拓尔微电子有限责任公司 | It is a kind of to export the circuit and its implementation for indicating current rate by PWM |
-
2018
- 2018-08-20 CN CN201810959812.7A patent/CN108783607A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109393573A (en) * | 2018-11-20 | 2019-03-01 | 杭州拓尔微电子有限公司 | New electronic cigarette control system |
| CN110250575A (en) * | 2019-06-06 | 2019-09-20 | 西安拓尔微电子有限责任公司 | It is a kind of to export the circuit and its implementation for indicating current rate by PWM |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181113 |