CN109567280A - Atomizer resistance value detection circuit and electronic cigarette - Google Patents
Atomizer resistance value detection circuit and electronic cigarette Download PDFInfo
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- CN109567280A CN109567280A CN201910042093.7A CN201910042093A CN109567280A CN 109567280 A CN109567280 A CN 109567280A CN 201910042093 A CN201910042093 A CN 201910042093A CN 109567280 A CN109567280 A CN 109567280A
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- 238000001514 detection method Methods 0.000 title claims abstract description 46
- 239000003571 electronic cigarette Substances 0.000 title claims abstract description 29
- 238000005070 sampling Methods 0.000 claims abstract description 39
- 239000003990 capacitor Substances 0.000 claims description 29
- 230000005611 electricity Effects 0.000 claims description 18
- 238000006243 chemical reaction Methods 0.000 claims description 7
- 230000000087 stabilizing effect Effects 0.000 claims description 6
- 230000003111 delayed effect Effects 0.000 claims description 4
- 239000000779 smoke Substances 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 8
- 206010037660 Pyrexia Diseases 0.000 description 4
- 238000000889 atomisation Methods 0.000 description 3
- 235000019504 cigarettes Nutrition 0.000 description 3
- 239000003595 mist Substances 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000000391 smoking effect Effects 0.000 description 2
- 208000033999 Device damage Diseases 0.000 description 1
- 241000208125 Nicotiana Species 0.000 description 1
- 235000002637 Nicotiana tabacum Nutrition 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
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- A24F47/008—
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- Electrostatic Spraying Apparatus (AREA)
Abstract
The present invention discloses a kind of atomizer resistance value detection circuit and electronic cigarette, wherein, atomizer resistance value detection circuit includes power module, control circuit, NPN triode, sampling resistor, first voltage Acquisition Circuit and second voltage Acquisition Circuit, first voltage Acquisition Circuit and second voltage Acquisition Circuit acquire the voltage value at sampling resistor both ends respectively and export corresponding first voltage signal and second voltage signal to control circuit, control circuit is according to the corresponding voltage value of first voltage signal, the resistance value of the corresponding voltage value of second voltage signal and sampling resistor determines the resistance value of atomizer, to which whether detectable atomizer can be used, it can not smoke to avoid appearance, or overload the problem of phenomena such as generating heat causes the damage of electronic cigarette.
Description
Technical field
The present invention relates to electronic cigarette technical field, in particular to a kind of atomizer resistance value detection circuit and electronic cigarette.
Background technique
Increasingly attention with people to health, many people can select with electronic cigarette come cigarette substitute, and electronic cigarette has
The characteristics of harmless and big smog, can simulate and suck cigarette, and can therefrom realize the enjoyment of smoking.The core component of electronic cigarette
It is atomizer, the effect of atomizer is by tobacco tar heating atomization into smog, and smog is sucked out by suction nozzle.
It is more and more common using the user of electronic cigarette at present, but user can exist in the process use used because of atomization sometimes
Device damage, poor contact lead to not smoke using the problems such as nonstandard resistance value atomizer, or phenomena such as overload fever causes
The problem of damage of electronic cigarette.
Summary of the invention
The main object of the present invention is to provide a kind of atomizer resistance value detection circuit, it is intended to detect whether atomizer can make
With, to avoid occurring not smoking, or the problem of causing the damage of electronic cigarette phenomena such as overload fever.
To achieve the above object, a kind of atomizer resistance value detection circuit proposed by the present invention, including power module, control electricity
Road, NPN triode, sampling resistor, first voltage Acquisition Circuit and second voltage Acquisition Circuit；
The power output end of the power module is connect with the collector of the NPN triode, the hair of the NPN triode
The first end of emitter-base bandgap grading, the voltage acquisition end of the first voltage Acquisition Circuit and the sampling resistor interconnects, the sampling resistor
Second end, the second voltage Acquisition Circuit voltage acquisition end and the atomizer power end interconnection, it is described first electricity
Press the controlled of the signal output end of Acquisition Circuit, the signal output end of the second voltage Acquisition Circuit and the NPN triode
The signal end respectively with the control circuit is held to be correspondingly connected with；
The NPN triode, the corresponding conducting of level signal or shutdown for being exported according to control circuit；
The first voltage Acquisition Circuit, for detecting the first of the sampling resistor in NPN triode conducting
The voltage value at end, and first voltage signal is exported to the control circuit；
The second voltage Acquisition Circuit, for detecting the second of the sampling resistor in NPN triode conducting
The voltage value at end, and second voltage signal is exported to the control circuit；
The control circuit, for according to the corresponding voltage value of the first voltage signal, the second voltage signal pair
The resistance value of the voltage value and the sampling resistor answered determines the resistance value of the atomizer.
Optionally, the first voltage Acquisition Circuit includes first resistor, second resistance and first capacitor；
The first end of the first resistor is the voltage acquisition end of the first voltage Acquisition Circuit, the first resistor
The first end of second end, the first end of the second resistance and the first capacitor interconnects, and connecting node is first electricity
The second end of the signal output end of pressure Acquisition Circuit, the second end of the second resistance and the first capacitor is grounded.
Optionally, the second voltage Acquisition Circuit includes 3rd resistor, the 4th resistance and the second capacitor；
The first end of the 3rd resistor is the voltage acquisition end of the second voltage Acquisition Circuit, the 3rd resistor
The first end of second end, the first end of the 4th resistance and second capacitor interconnects, and connecting node is second electricity
The signal output end of Acquisition Circuit is pressed, the second end of the 4th resistance and the second end of second capacitor are grounded.
Optionally, the control circuit is specifically used for:
Output switch control signal controls NPN triode conducting, and described the is obtained after first preset time that is delayed
One voltage signal and the second voltage signal, and according to the corresponding voltage value of the first voltage signal, the second voltage
After the resistance value of the corresponding voltage value of signal and the sampling resistor determines the resistance value of the atomizer, output switch control signal
Control the NPN triode shutdown.
Optionally, the atomizer resistance value detection circuit further includes display module, the signal end of the display module and institute
The signal end connection of control circuit is stated, the display module is for showing the resistance value of the atomizer.
Optionally, the power module is battery.
Optionally, the control circuit is MCU, the power output end company of the power end of the MCU and the power module
It connects.
Optionally, the atomizer resistance value detection circuit further includes voltage regulator circuit, the power input of the voltage regulator circuit
It is connect with the power output end of the power module, the power output end of the voltage regulator circuit is connect with the power end of the MCU；
The voltage regulator circuit, the DC power supply for exporting the power module carry out pressure stabilizing, and are the control electricity
Road power supply.
The present invention also proposes a kind of electronic cigarette, which includes atomizer, main power circuit and the upper atomizer
Resistance value detection circuit, the power input of the main power circuit are connect with the power output end of the power module, the master
The power output end of power circuit is connect with the power input of the atomizer, the controlled end of the main power circuit with it is described
The signal end of control circuit connects；
The main power circuit, the DC power supply for exporting the power module carry out power supply conversion, and according to institute
The control signal for stating control circuit output drives the atomizer.
Optionally, the control circuit is also used to when the resistance value of the atomizer is within the scope of preset resistive value, controls institute
Main power circuit start-up operation is stated, when the resistance value of the atomizer is outside preset resistive value range, controls the main power circuit
It stops working.
Technical solution of the present invention is adopted by using power module, control circuit, NPN triode, sampling resistor, first voltage
Collector and second voltage Acquisition Circuit form atomizer resistance value detection circuit, when atomizer detection circuit works, output switch
Signal control NPN triode conducting is controlled, first voltage Acquisition Circuit and second voltage Acquisition Circuit are started to work, and are adopted respectively
Collect the voltage value at sampling resistor both ends and exports corresponding first voltage signal and second voltage signal to control circuit, control electricity
Road is combined according to the resistance value of the corresponding voltage value of first voltage signal, the corresponding voltage value of second voltage signal and sampling resistor
Ohm's law determines the resistance value of atomizer, so as to determine atomizer with the presence or absence of damage, poor contact or use nonstandard resistance
The problems such as value, and can perhaps buzzer issues alarm signal to prompt user or control circuit to export control by indicator light
Signal turns off the power supply of electronic cigarette, so that avoiding the occurrence of electronic cigarette can not smoke, or phenomena such as overload fever causes electronic cigarette
Damage the problem of.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
The structure shown according to these attached drawings obtains other attached drawings.
Fig. 1 is the module diagram of one embodiment of atomizer resistance value detection circuit of the present invention；
Fig. 2 is the circuit diagram of one embodiment of atomizer resistance value detection circuit of the present invention；
Fig. 3 is the circuit diagram of another embodiment of atomizer resistance value detection circuit of the present invention；
Fig. 4 is the electrical block diagram of one embodiment of electronic cigarette of the present invention.
The embodiments will be further described with reference to the accompanying drawings for the realization, the function and the advantages of the object of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiment is only a part of the embodiments of the present invention, instead of all the embodiments.Base
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts it is all its
His embodiment, shall fall within the protection scope of the present invention.
It is to be appreciated that the description for being related to " first ", " second " etc. in the present invention is used for description purposes only, and cannot understand
For its relative importance of indication or suggestion or implicitly indicate the quantity of indicated technical characteristic.Define as a result, " first ",
The feature of " second " can explicitly or implicitly include at least one of the features.In addition, the "and/or" occurred in full text contains
Justice are as follows: including three schemes arranged side by side, by taking " A/B " as an example, including the scheme that A scheme or B scheme or A and B meet simultaneously, separately
Outside, the technical solution between each embodiment can be combined with each other, can be real with those of ordinary skill in the art but must be
Based on existing, the combination of this technical solution will be understood that not when conflicting or cannot achieve when occurs in the combination of technical solution
In the presence of, also not the present invention claims protection scope within.
The present invention proposes a kind of atomizer resistance value detection circuit 100.
As shown in FIG. 1, FIG. 1 is the module diagram of one embodiment of atomizer resistance value detection circuit of the present invention, the present invention is mentioned
A kind of atomizer resistance value detection circuit 100 out includes power module 10, control circuit 40, NPN triode Q1, sampling resistor
RC, first voltage Acquisition Circuit 20 and second voltage Acquisition Circuit 30；
The power output end of the power module 10 is connect with the collector of the NPN triode Q1, the NPN triode
The first end of the emitter of Q1, the voltage acquisition end of the first voltage Acquisition Circuit 20 and the sampling resistor RC interconnects, institute
State second end, the voltage acquisition end of the second voltage Acquisition Circuit 30 and the power supply of the atomizer 200 of sampling resistor RC
End interconnection, the signal output end of the signal output end of the first voltage Acquisition Circuit 20, the second voltage Acquisition Circuit 30
And signal end of the controlled end of the NPN triode Q1 respectively with the control circuit 40 is correspondingly connected with；
The NPN triode Q1, the corresponding conducting of level signal or shutdown for being exported according to control circuit 40；
The first voltage Acquisition Circuit 20, for detecting the sampling resistor RC in NPN triode Q1 conducting
First end voltage value, and export first voltage signal to the control circuit 40；
The second voltage Acquisition Circuit 30, for detecting the sampling resistor RC in NPN triode Q1 conducting
Second end voltage value, and export second voltage signal to the control circuit 40；
The control circuit 40, for according to the corresponding voltage value of the first voltage signal, the second voltage signal
The resistance value of corresponding voltage value and the sampling resistor RC determine the resistance value of the atomizer 200.
In the present embodiment, resistance RL is the equivalent resistance of atomizer, and the first end of resistance RL is equivalent to the electricity of atomizer 200
Source, the voltage sampled resistance RC and resistance RL that power module 10 exports are divided, and control circuit 40 is obtaining sampling
After the voltage at the both ends resistance RC, the resistance value of atomizer 200, the resistance value of atomizer 200 can be obtained in conjunction with Ohm's law are as follows:
RL is the resistance value of atomizer 200, and RC is the resistance value of sampling resistor RC, and V1 is the voltage of the first end of sampling resistor RC
Value, the voltage value of the second end of V2 sampling resistor RC.
In the present embodiment, power module 10 can be battery BAT, or be the combination electricity of battery BAT and voltage conversion circuit
Rechargeable battery BAT or dry cell BAT can be used in road, battery BAT, and NPN triode Q1 is as switching device, it is possible to understand that
It is that the output electric current of NPN triode Q1 is determined by base current, therefore, in the switch control signal electricity that control circuit 40 exports
When properties of flow keeps stablizing, the voltage of the collector of NPN triode Q1 can choose the voltage of a wide scope, therefore, atomization
The power module 10 of device resistance value detection circuit can choose the power module 10 of different voltages grade, to increase its applied field
Scape.
And since NPN triode Q1 is there are pressure drop or because of model difference, the emitter voltage of NPN triode Q1 may not
Equal to the voltage difference of the cut-in voltage of the collector voltage and NPN triode Q1 of NPN triode Q1, therefore, it is necessary to NPN tri-
The emitter voltage of pole pipe Q1 is detected again, to improve detection accuracy.
Divider resistance can be used in first voltage Acquisition Circuit 20 and second voltage Acquisition Circuit 30 or sampling A/D chip carries out
Voltage sample can specifically be selected, herein with no restrictions according to demand.
MCU or voltage comparator circuit can be used in control circuit 40, and specifically, in the present embodiment, control circuit 40 is used
MCU, MCU can directly be powered by power module 10 or be powered by conversion circuit, and atomizer resistance value detection circuit 100 works
When, MCU exports high level control NPN triode Q1 conducting, and in order to improve the precision of voltage acquisition, MCU is delayed after preset time
The voltage signal of first voltage Acquisition Circuit 20 and the output of the second Acquisition Circuit is obtained, again to ensure the end voltage of sampling resistor RC
Stablize, analog-digital converter built in MCU, analog-digital converter exports first voltage Acquisition Circuit 20 and second voltage Acquisition Circuit 30
Voltage signal carry out analog-to-digital conversion, MCU obtains the corresponding end voltage of sampling resistor RC according to the digital voltage signal after conversion
V1 and V2, and output switch control signal control NPN triode Q1 shutdown, and the resistance value of atomizer 200 is calculated, MCU is to mist
The resistance value for changing device 200 is judged, to determine whether atomizer 200 works normally, and exportable trigger signal to indicator light or
Person's buzzer, to prompt the working condition of user's atomizer, the driving circuit of the also exportable control signal of MCU to atomizer 200
It is stopped working with controlling atomizer 200, can be specifically configured according to demand.
Technical solution of the present invention is by using power module 10, control circuit 40, NPN triode Q1, sampling resistor RC,
One voltage collection circuit 20 and second voltage Acquisition Circuit 30 form atomizer resistance value detection circuit 100, atomizer detection circuit
When 100 work, output switch control signal controls NPN triode Q1 conducting, and first voltage Acquisition Circuit 20 and second voltage are adopted
Collector 30 is started to work, and is acquired the voltage value at the both ends sampling resistor RC respectively and exported corresponding first voltage signal and the
Two voltage signals are to control circuit 40, and control circuit 40 is according to the corresponding voltage value of first voltage signal, second voltage signal pair
The resistance value combination Ohm's law of the voltage value and sampling resistor RC answered determines the resistance value of atomizer 200, so as to determine mist
Change the problems such as device 200 is with the presence or absence of damage, poor contact or using nonstandard resistance value, and can be issued by indicator light or buzzer
Alarm signal, to prompt user or control circuit 40 to export the power supply of control signal shutdown electronic cigarette, to avoid the occurrence of electricity
The problem of sub- cigarette can not smoke, or phenomena such as overload fever causes the damage of electronic cigarette.
As shown in Fig. 2, circuit diagram of the Fig. 2 for one embodiment of atomizer resistance value detection circuit of the present invention, described first
Voltage collection circuit 20 includes first resistor R1, second resistance R2 and first capacitor C1；
The first end of the first resistor R1 is the voltage acquisition end of the first voltage Acquisition Circuit 20, first electricity
The first end interconnection of the second end of R1, the first end of the second resistance R2 and the first capacitor C1 are hindered, connecting node is
The of the signal output end of the first voltage Acquisition Circuit 20, the second end of the second resistance R2 and the first capacitor C1
Two ends are grounded.
In the present embodiment, first resistor R1 and second resistance R2 are divided the voltage V1 of the first end of sampling resistor RC
Pressure, and export first voltage signal to MCU, first capacitor C1 is for filtering, and MCU is after control NPN triode Q1 conducting, the
First voltage signal is obtained again after one capacitor C1 charging complete, to improve detection accuracy.
In an alternative embodiment, the second voltage Acquisition Circuit 30 includes 3rd resistor R3, the 4th resistance R4 and the
Two capacitor C2；
The first end of the 3rd resistor R3 is the voltage acquisition end of the second voltage Acquisition Circuit 30, the third electricity
The first end interconnection of the second end of R3, the first end of the 4th resistance R4 and the second capacitor C2 are hindered, connecting node is
The of the signal output end of the second voltage Acquisition Circuit 30, the second end of the 4th resistance R4 and the second capacitor C2
Two ends are grounded.
In the present embodiment, 3rd resistor R3 and the 4th resistance R4 are divided the voltage V2 of the second end of sampling resistor RC
Pressure, and export second voltage signal to MCU, the second capacitor C2 is for filtering, and MCU is after control NPN triode Q1 conducting, the
Second voltage signal is obtained again after two capacitor C2 charging completes, to improve detection accuracy.
Specifically, the control circuit 40 is specifically used for:
Output switch control signal controls the NPN triode Q1 conducting, and after first preset time that is delayed described in acquisition
First voltage signal and the second voltage signal, and according to the corresponding voltage value of the first voltage signal, second electricity
After the resistance value of the pressure corresponding voltage value of signal and the sampling resistor RC determine the resistance value of the atomizer, and output switch
It controls signal and controls the NPN triode Q1 shutdown.
In the present embodiment, MCU has charged after control NPN triode Q1 conducting in first capacitor C1 and the second capacitor C2
Cheng Houzai obtains corresponding voltage signal, and to improve detection accuracy, the first preset time T should be greater than first capacitor C1 and second
The charging voltage time of capacitor C2, first capacitor C1 charging time beThe charging time of second capacitor C2
ForAfter obtaining first voltage signal and second voltage signal, MCU output switch control signal again
It turns off NPN triode Q1 and improves the cruising ability of electronic cigarette to reduce energy consumption.
In an alternative embodiment, the atomizer resistance value detection circuit 100 further includes display module (not shown go out), institute
The signal end for stating display module is connect with the signal end of the control circuit 40, and the display module is used for the atomizer
200 resistance value is shown.
In the present embodiment, control circuit 40 can will also output signal to display mould after the resistance value for obtaining atomizer 200
To show the resistance value information of atomizer 200, display module can be used different colours and shows 200 resistance value of atomizer to prompt user block
Judge whether atomizer 200 is in normal operating conditions.
In an alternative embodiment, the power module 10 is battery BAT.
In order to simplify electronic cigarette internal circuit configuration, atomizer resistance value detection circuit 100 is directly from electronic cigarette internal cell
BAT obtains power supply, and the power end of battery BAT is connect with the driving circuit of NPN triode Q1 and atomizer respectively, battery BAT's
Power end is also directly connected to MCU, to provide MCU operating voltage.
As shown in figure 3, Fig. 3 is the circuit diagram of another embodiment of atomizer resistance value detection circuit of the present invention, the mist
Changing device resistance value detection circuit 100 further includes voltage regulator circuit 50, the power input and the power module of the voltage regulator circuit 50
10 power output end connection, the power output end of the voltage regulator circuit 50 are connect with the power end of the MCU；
The voltage regulator circuit 50, the DC power supply for exporting the power module 10 carry out pressure stabilizing, and are the control
Circuit 40 processed is powered.
In the present embodiment, in order to improve the job stability of MCU, voltage regulator circuit 50 is further connected between MCU and battery BAT,
Voltage regulator circuit 50 exports the power end of stable operating voltage to MCU, and three terminal regulator or pressure stabilizing can be used in voltage regulator circuit 50
Diode carries out pressure stabilizing, and cooperates filter capacitor to be filtered to reduce harmonic wave interference, the particular circuit configurations of voltage regulator circuit 50
It can be configured according to demand, herein with no restrictions.
The present invention also proposes a kind of electronic cigarette, as shown in figure 4, Fig. 4 is the circuit structure of one embodiment of electronic cigarette of the present invention
Schematic diagram, the electronic cigarette include atomizer 200, main power circuit 300 and the upper atomizer resistance value detection circuit 100, are somebody's turn to do
The specific structure of atomizer resistance value detection circuit 100 is referring to above-described embodiment, since this electronic cigarette uses above-mentioned all implementations
Whole technical solutions of example, therefore at least all beneficial effects brought by the technical solution with above-described embodiment, herein not
It repeats one by one again.Wherein, the power output end of the power input of the main power circuit 300 and the power module 10 connects
It connects, the power output end of the main power circuit 300 is connect with the power input of the atomizer 200, the main power source electricity
The controlled end on road 300 is connect with the signal end of the control circuit 40；
The main power circuit 300, the DC power supply for exporting the power module 10 carry out power supply conversion, and root
The atomizer 200 is driven according to the control signal of the control circuit 40 output.
In the present embodiment, main power circuit 300 is for driving atomizer 200 to work, when electronic cigarette is opened, main power source electricity
Road 300 does not work, and atomizer resistance value detection circuit 100 works and carries out resistance value detection, and control circuit 40 is determining atomizer 200
Resistance value when being in preset resistive value range, i.e., when atomizer 200 is in normal operating conditions, the output control signal of control circuit 40
To main power circuit 300 to control the start-up operation of main power circuit 300, and atomizer 200 is driven, atomizer resistance value detects at this time
Circuit 100 is in stop working state to reduce energy consumption, when 200 resistance value of atomizer is in outside preset resistive value range, that is, is atomized
When device 200 is in abnormal operation, control circuit 40 outputs control signals to main power circuit 300 to control main power circuit
300 stop working, and carry out resistance value in display module and show, to prompt user to replace or safeguard.
In the present embodiment, main power circuit 300 is according to the corresponding conducting of control signal that control circuit 40 exports or turns off,
BUCK/BOOST step-up/step-down circuit or other driving circuits can be used in main power circuit 300, are not particularly limited herein.
The above description is only a preferred embodiment of the present invention, is not intended to limit the scope of the invention, all at this
Under the inventive concept of invention, using equivalent structure transformation made by description of the invention and accompanying drawing content, or directly/use indirectly
It is included in other related technical areas in scope of patent protection of the invention.
Claims (10)
1. a kind of atomizer resistance value detection circuit, which is characterized in that including power module, control circuit, NPN triode, sampling
Resistance, first voltage Acquisition Circuit and second voltage Acquisition Circuit；
The power output end of the power module is connect with the collector of the NPN triode, the transmitting of the NPN triode
The first end of pole, the voltage acquisition end of the first voltage Acquisition Circuit and the sampling resistor interconnects, the sampling resistor
The power end of second end, the voltage acquisition end of the second voltage Acquisition Circuit and the atomizer interconnects, the first voltage
The controlled end of the signal output end of Acquisition Circuit, the signal output end of the second voltage Acquisition Circuit and the NPN triode
The signal end with the control circuit is correspondingly connected with respectively；
The NPN triode, the corresponding conducting of level signal or shutdown for being exported according to control circuit；
The first voltage Acquisition Circuit, for detecting the first end of the sampling resistor in NPN triode conducting
Voltage value, and first voltage signal is exported to the control circuit；
The second voltage Acquisition Circuit, for detecting the second end of the sampling resistor in NPN triode conducting
Voltage value, and second voltage signal is exported to the control circuit；
The control circuit, for corresponding according to the corresponding voltage value of the first voltage signal, the second voltage signal
The resistance value of voltage value and the sampling resistor determines the resistance value of the atomizer.
2. atomizer resistance value detection circuit as described in claim 1, which is characterized in that the first voltage Acquisition Circuit includes
First resistor, second resistance and first capacitor；
The first end of the first resistor be the first voltage Acquisition Circuit voltage acquisition end, the second of the first resistor
The first end interconnection at end, the first end of the second resistance and the first capacitor, connecting node are that the first voltage is adopted
The second end of the signal output end of collector, the second end of the second resistance and the first capacitor is grounded.
3. atomizer resistance value detection circuit as claimed in claim 2, which is characterized in that the second voltage Acquisition Circuit includes
3rd resistor, the 4th resistance and the second capacitor；
The first end of the 3rd resistor be the second voltage Acquisition Circuit voltage acquisition end, the second of the 3rd resistor
The first end interconnection at end, the first end of the 4th resistance and second capacitor, connecting node are that the second voltage is adopted
The signal output end of collector, the second end of the 4th resistance and the second end of second capacitor are grounded.
4. atomizer resistance value detection circuit as claimed in claim 3, which is characterized in that the control circuit is specifically used for:
Output switch control signal controls the NPN triode conducting, and first electricity is obtained after first preset time that is delayed
Signal and the second voltage signal are pressed, and according to the corresponding voltage value of the first voltage signal, the second voltage signal
After the resistance value of corresponding voltage value and the sampling resistor determines the resistance value of the atomizer, output switch control signal control
The NPN triode shutdown.
5. atomizer resistance value detection circuit as claimed in claim 4, which is characterized in that the atomizer resistance value detection circuit is also
Including display module, the signal end of the display module is connect with the signal end of the control circuit, and the display module is used for
The resistance value of the atomizer is shown.
6. the atomizer resistance value detection circuit as described in claim 1-5 any one, which is characterized in that the power module is
Battery.
7. atomizer resistance value detection circuit as claimed in claim 6, which is characterized in that the control circuit is MCU, described
The power end of MCU is connect with the power output end of the power module.
8. atomizer resistance value detection circuit as claimed in claim 7, which is characterized in that the atomizer resistance value detection circuit is also
Including voltage regulator circuit, the power input of the voltage regulator circuit is connect with the power output end of the power module, the pressure stabilizing
The power output end of circuit is connect with the power end of the MCU；
The voltage regulator circuit, the DC power supply for exporting the power module carries out pressure stabilizing, and supplies for the control circuit
Electricity.
9. a kind of electronic cigarette, which is characterized in that hindered including atomizer, main power circuit and atomizer as claimed in claim 8
It is worth detection circuit, the power input of the main power circuit is connect with the power output end of the power module, the main electricity
The power output end of source circuit is connect with the power input of the atomizer, the controlled end of the main power circuit and the control
The signal end of circuit processed connects；
The main power circuit, the DC power supply for exporting the power module carry out power supply conversion, and according to the control
The control signal of circuit output processed drives the atomizer.
10. electronic cigarette as claimed in claim 9, which is characterized in that the control circuit is also used to the resistance when the atomizer
When value is within the scope of preset resistive value, controls the main power circuit and start to work, when the resistance value of the atomizer is in preset resistive value
When outside range, controls the main power circuit and stop working.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910042093.7A CN109567280A (en) | 2019-01-16 | 2019-01-16 | Atomizer resistance value detection circuit and electronic cigarette |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910042093.7A CN109567280A (en) | 2019-01-16 | 2019-01-16 | Atomizer resistance value detection circuit and electronic cigarette |
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| CN109567280A true CN109567280A (en) | 2019-04-05 |
Family
ID=65915179
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|---|---|---|---|
| CN201910042093.7A Pending CN109567280A (en) | 2019-01-16 | 2019-01-16 | Atomizer resistance value detection circuit and electronic cigarette |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109907378A (en) * | 2019-04-08 | 2019-06-21 | 深圳市海派特光伏科技有限公司 | Electronic cigarette power circuit and electronic cigarette |
| CN110122933A (en) * | 2019-06-11 | 2019-08-16 | 深圳市劳斯韦伯科技有限公司 | Electronic cigarette control device and its electronic cigarette |
| CN110179166A (en) * | 2019-06-19 | 2019-08-30 | 精赟智能科技（上海）有限公司 | Electronic atomized circuit and electronic cigarette |
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| CN110632133A (en) * | 2019-09-27 | 2019-12-31 | 深圳迪致科技术有限公司 | Detection circuit and detection method for use state of electronic cigarette equipment |
| CN110632133B (en) * | 2019-09-27 | 2024-05-10 | 深圳迪致科技术有限公司 | Detection circuit and detection method for use state of electronic cigarette equipment |
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| CN114895175A (en) * | 2022-07-15 | 2022-08-12 | 无锡市晶源微电子有限公司 | Measurement circuit and measurement method |
| CN115656767A (en) * | 2022-08-31 | 2023-01-31 | 广东弗我智能制造有限公司 | Universal atomizer detection method |
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