CN109090710A - A kind of atomizer resistance value detection circuit - Google Patents
A kind of atomizer resistance value detection circuit Download PDFInfo
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- CN109090710A CN109090710A CN201811100042.7A CN201811100042A CN109090710A CN 109090710 A CN109090710 A CN 109090710A CN 201811100042 A CN201811100042 A CN 201811100042A CN 109090710 A CN109090710 A CN 109090710A
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- Prior art keywords
- atomizer
- detection circuit
- resistance value
- microcontroller
- output
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- A24F47/008—
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/08—Measuring resistance by measuring both voltage and current
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
This application discloses atomizer resistance value detection circuits, the atomizer resistance value detection circuit includes microcontroller, output circuit, detection circuit, atomizer and power supply, the microcontroller is connected with the output circuit, the detection circuit and the power supply respectively, the output circuit is connected with the detection circuit, the atomizer and the power supply respectively, and the detection circuit is connected with the power supply.Implement the embodiment of the present invention, simplify circuit design, reduces hardware cost.
Description
Technical field
The present invention relates to a kind of atomizer resistance value detection circuits.
Background technique
The atomizer resistance value of electronic cigarette is one of electronics smoke product very important parameter, the vertical development history for seeing electronic cigarette,
Electronic cigarette is from the scheme of the product simply only smoked various maturation till now, and the resistance value parameter of atomizer is at this
A development process plays critically important role, it is also the parameter for first having to consider in electronic cigarette product design process.
In practical applications, the change in resistance of atomizer also reflects the various states of product in real time, such as normal
Working condition, non-loaded (zero load) state, short-circuit condition etc..Pass through inspection in nowadays relatively more mature Electronic Design schemes
The application that the resistance value of atomizer is surveyed to judge which kind of state electronic cigarette is in is most.
After atomizer is selected, the detection of atomizer resistance value just has with the design of electronic circuit and the design of software
It closes.But in practical applications, traditional atomizer resistance value detection circuit is excessively complicated, for inexpensive, small in size, power is small
For product, the hardware cost needed is high.
Summary of the invention
The embodiment of the present invention provides atomizer resistance value detection circuit, implements the embodiment of the present invention, simplifies circuit design, reduces
Hardware cost.
The embodiment of the present invention provides a kind of atomizer resistance value detection circuit, and the atomizer resistance value detection circuit includes micro-control
Device, output circuit, detection circuit, atomizer and power supply processed；
The atomizer resistance value detection circuit includes microcontroller, output circuit, detection circuit, atomizer and power supply；
The atomizer is connect with output circuit and detection circuit respectively；
The microcontroller is disconnected or is connected for controlling the output circuit, controls the detection circuit and disconnect or lead
It is logical, by output circuit and detection circuit, the voltage of the atomizer is sampled respectively, and calculates the resistance value of the atomizer,
In, the microcontroller is connected with the output circuit, the detection circuit and the power supply respectively；
The output circuit, for cooperating the microcontroller to export the output power of the atomizer, wherein described defeated
Circuit is connected with the detection circuit, the atomizer and the power supply respectively out；
The detection circuit, for cooperating the microcontroller to detect the resistance value of the atomizer, wherein the detection is electric
Road is connected with the power supply.
As can be seen that the embodiment of the present invention provides a kind of atomizer resistance value detection circuit, including microcontroller, output electricity
Road, detection circuit, atomizer and power supply, connection type is simple, simplifies circuit design, reduces hardware cost.
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
It obtains other drawings based on these drawings.
Wherein:
Fig. 1 is that the embodiment of the present invention provides a kind of frame construction drawing of atomizer resistance value detection circuit；
Fig. 2 is that the embodiment of the present invention provides a kind of schematic diagram of atomizer resistance value detection circuit；
Fig. 3 is that the embodiment of the present invention provides a kind of schematic diagram of microcontroller in atomizer resistance value detection circuit；
Fig. 4 is that the embodiment of the present invention provides a kind of schematic diagram of output circuit in atomizer resistance value detection circuit；
Fig. 5 is that the embodiment of the present invention provides a kind of schematic diagram of detection circuit in atomizer resistance value detection circuit；
Fig. 6 is that the embodiment of the present invention provides a kind of flow diagram of detection circuit in atomizer resistance value detection circuit.
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 embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
It is described in detail separately below.
Term " first " and " second " in description and claims of this specification and above-mentioned attached drawing are for distinguishing
Different objects, are not use to describe a particular order.
A kind of atomizer resistance value detection circuit provided in an embodiment of the present invention.As shown in Figure 1, the atomizer resistance value detection
Circuit includes microcontroller 1, output circuit 2, detection circuit 3, atomizer 4 and power supply 5.Wherein, the microcontroller 1 respectively with
The output circuit 2, the detection circuit 3 are connected with the power supply 5, the output circuit 2 respectively with the detection circuit 3,
The atomizer 4 is connected with the power supply 5, and the detection circuit 3 is connected with the power supply 5.
Specifically, as shown in Fig. 2, the atomizer resistance value detection circuit includes microcontroller, output circuit, detection electricity
Road, atomizer and power supply；
The atomizer is connect with output circuit and detection circuit respectively；
The microcontroller is disconnected or is connected for controlling the output circuit, controls the detection circuit and disconnect or lead
It is logical, by output circuit and detection circuit, the voltage of the atomizer is sampled respectively, and calculates the resistance value of the atomizer,
In, the microcontroller is connected with the output circuit, the detection circuit and the power supply respectively；
The output circuit, for cooperating the microcontroller to export the output power of the atomizer, wherein described defeated
Circuit is connected with the detection circuit, the atomizer and the power supply respectively out；
The detection circuit, for cooperating the microcontroller to detect the resistance value of the atomizer, wherein the detection is electric
Road is connected with the power supply.
Wherein, power supply for example may include high polymer battery, phosphoric acid lithium battery or other kinds of battery, voltage range
In 3.5~4.5v, operating voltage can be provided for microcontroller, detection circuit, output circuit, atomizer.
Wherein, as shown in Figures 2 and 3, the microcontroller, comprising:
First pwm signal output pin PWM1, the second pwm signal output pin PWM2, voltage input foot VOUT and control foot R_
EN；
The output pin that the first pwm signal output pin PWM1 passes through the pull-up resistor R4 and the first switch tube Q1
Connection；
The second pwm signal output pin PWM2 passes through the second voltage sampling resistor R12 and the second switch
The input pin of Q2 connects；
The voltage input foot VOUT is electrically connected with the other end of the first voltage sampling resistor R7；
The control foot R_EN is electrically connected by the control foot of the second current-limiting resistance R11 and the second switch Q2
It connects.
Specifically, the microcontroller selects BX030.The microcontroller includes the first pwm signal output pin PWM1, the
Two pwm signal output pin PWM2, voltage input foot VOUT, control foot R_EN or other relevant pins.First pwm signal is defeated
Foot PWM1 is the 10th pin out, and the second pwm signal output pin PWM2 is the 16th pin.The voltage input foot VOUT is
15 pins, the control foot R_EN is the 11st pin.
Wherein, the first pwm signal of the 10th pin output high level of microcontroller is described defeated to disconnect to output circuit
Circuit out；The control signal or enable signal (R_EN) of the 11st pin output high level of microcontroller arrive detection circuit, to lead
Lead to the detection circuit.
10th pin of microcontroller exports low level first pwm signal to output circuit, the output electricity is connected
Road；11st pin of microcontroller exports low level control signal or enable signal (R_EN) arrives detection circuit, to disconnect
State detection circuit.
Wherein, the 15th pin of microcontroller and the 16th pin are set as AD input port, and the 16th pin exports the 2nd PWM letter
Number to detection circuit sampling resistor R12.
15th pin of microcontroller and the 16th pin are sampled respectively through first voltage sampling resistor R7 and described first
Voltage, the second switch Q2 of pull down resistor R3 ground connection pass through the voltage of the second current-limiting resistance R11.And F+ point is mist
Change being electrically accessed a little for device, microcontroller passes through the voltage of first voltage sampling resistor R7 to F+ point by the sampling of the 15th pin,
It is the sampled voltage at atomizer both ends；Meanwhile microcontroller detects F+ point by detection resistance R13 by the sampling of the 16th pin
Voltage, that is to say detection resistance R13 and atomizer series voltage.
Wherein, as shown in Figure 2 and Figure 4, the output circuit, including first switch tube Q1, pull-up resistor R4, the first drop-down
Resistance R3, first voltage sampling resistor R7 and the first current-limiting resistance R8；The input pin of the first switch tube Q1 passes through described
Pull-up resistor R4 is connect with the first pwm signal output pin PWM1 of the microcontroller, and tie point passes through first current limliting
Resistance R8 is electrically connected with the control foot of the first switch tube Q1；One end and described first of the first voltage sampling resistor R7
The output pin of switching tube Q1 is electrically connected, and the tie point is electrically connected with the atomizer and described one end first pull down resistor R3 respectively
It connects, the other end ground connection of the first pull down resistor R3, the other end of the first voltage sampling resistor R7 and the microcontroller
The voltage input foot VOUT of device is electrically connected, and the input pin of the first switch tube Q1 connects power supply.
Wherein, as shown in Figure 2 and Figure 5, the detection circuit, including second switch Q2, the second current-limiting resistance R11,
Two voltage sample resistance R12, detection resistance R13 and the second pull down resistor R9；The input pin of the second switch Q2 passes through
The detection resistance R13 is electrically connected with the output pin of the first switch tube Q1, and the control foot of the second switch Q2 passes through
The second current-limiting resistance R11 is electrically connected with the control foot R_EN of the microcontroller, the input pin of the second switch Q2
Connect power supply；The input pin of the second switch Q2 pass through the second voltage sampling resistor R12 and the microcontroller the
Two pwm signal output pin PWM2 connections.
Wherein, detection resistance R13, resistance value are 3 Europe.
Wherein, the first switch tube Q1 is p-type metal-oxide-semiconductor；The second switch Q2 is N-type metal-oxide-semiconductor.First switch tube
Q1 is AO3401, and second switch Q2 is AO3400.
Wherein, when the resistance value of the atomizer is less than 0.5 Europe, the output circuit is disconnected.
A kind of detection method of atomizer resistance value detection circuit provided in an embodiment of the present invention.
Q1 is turned off referring to Fig. 6, S601, Q2 is connected.
First pwm signal of the first pwm signal output pin output high level of microcontroller is to output circuit, to disconnect
State output circuit.Wherein, it disconnects the output circuit and turns off Q1.The control signal of the control foot output high level of microcontroller
Or enable signal (R_EN) arrives output circuit, the output circuit is connected.Wherein, the output circuit is connected, i.e. conducting Q2.
Wherein, the first pwm signal output pin of microcontroller is the 10th pin, and the control foot of microcontroller is the 11st to draw
Foot.
The voltage of S602 sampling atomizer.
The voltage input foot sampling of microcontroller is connect by first voltage sampling resistor R7 and the first pull down resistor R3
The voltage on ground, as the sampled voltage at the atomizer both ends.
Wherein, the voltage input foot of microcontroller is the 15th pin.
S603 sample detecting resistance R13 and atomizer series voltage.
Second pwm signal output pin of microcontroller samples the second switch Q2 and passes through second current-limiting resistance
The voltage of R11, as detection resistance R13 and atomizer series voltage.
Wherein, the second pwm signal output pin of microcontroller is the 16th pin, and the resistance value of detection resistance R13 is 3 Europe.
The resistance value of S604 calculating atomizer.
Within the period of setting, according to the resistance value of the voltage of sampling and detection resistance R13, microcontroller can calculate atomization
The resistance value of device.If the resistance value of atomizer shows short circuit less than 0.5 Europe；If the resistance value of atomizer between 0.5 Europe and 3 Europe,
Show to work normally；If the resistance value of atomizer is greater than 3 Europe, show zero load.So as to pass through the resistance value of detection atomizer, standard
Really determine Product Status, realizes short-circuit protection.
Wherein, when the resistance value of the atomizer is less than 0.5 Europe, the output circuit is disconnected；When the resistance value of atomizer exists
When between 0.5 Europe and 3 Europe, Q1 is connected, turns off Q2.
Q1 is connected in S605, turns off Q2.
First pwm signal output pin of microcontroller exports low level first pwm signal to output circuit, to disconnect
State output circuit.Wherein, it disconnects the output circuit and Q1 is connected.The control foot of microcontroller exports low level control signal
Or enable signal (R_EN) arrives output circuit, the output circuit is connected.Wherein, the output circuit is connected, i.e. shutdown Q2.
Wherein, the first pwm signal output pin of microcontroller is the 10th pin, and the control foot of microcontroller is the 11st to draw
Foot.
By the way that Q1 is connected, Q2 is turned off, the state of atomizer resistance value detection circuit is switched, to be detected to next cycle entrance
S601 to S605 is recycled when atomizer resistance value.
It should be noted that for the various method embodiments described above, for simple description, therefore, it is stated as a series of
Combination of actions, but those skilled in the art should understand that, the present invention is not limited by the sequence of acts described because
According to the present invention, some steps may be performed in other sequences or simultaneously.Secondly, those skilled in the art should also know
It knows, the embodiments described in the specification are all preferred embodiments, and related actions and modules is not necessarily of the invention
It is necessary.
In the above-described embodiments, it all emphasizes particularly on different fields to the description of each embodiment, there is no the portion being described in detail in some embodiment
Point, reference can be made to the related descriptions of other embodiments.
The above, the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although referring to before
Stating embodiment, invention is explained in detail, those skilled in the art should understand that: it still can be to preceding
Technical solution documented by each embodiment is stated to modify or equivalent replacement of some of the technical features；And these
It modifies or replaces, the range for technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution.
Claims (5)
1. a kind of atomizer resistance value detection circuit, which is characterized in that the atomizer resistance value detection circuit includes microcontroller, defeated
Circuit, detection circuit, atomizer and power supply out；
The atomizer is connect with the output circuit and the detection circuit respectively；
The microcontroller is disconnected or is connected for controlling the output circuit, is controlled the detection circuit and is disconnected or be connected, leads to
The output circuit and the detection circuit are crossed, samples the voltage of the atomizer respectively, and calculates the resistance value of the atomizer,
Wherein, the microcontroller is connected with the output circuit, the detection circuit and the power supply respectively；
The output circuit, for cooperating the microcontroller to export the output power of the atomizer, wherein the output electricity
Road is connected with the detection circuit, the atomizer and the power supply respectively；
The detection circuit, for cooperating the microcontroller to detect the resistance value of the atomizer, wherein the detection circuit with
The power supply is connected.
2. atomizer resistance value detection circuit according to claim 1, which is characterized in that the output circuit, including first
Switching tube Q1, pull-up resistor R4, the first pull down resistor R3, first voltage sampling resistor R7 and the first current-limiting resistance R8；It is described
The input pin of first switch tube Q1 is connect by the pull-up resistor R4 with the first pwm signal output pin of the microcontroller,
And tie point is electrically connected by the first current-limiting resistance R8 with the control foot of the first switch tube Q1；The first voltage is adopted
One end of sample resistance R7 is electrically connected with the output pin of the first switch tube Q1, and the tie point respectively with the atomizer and institute
State the electrical connection of first one end pull down resistor R3, the other end ground connection of the first pull down resistor R3, the first voltage sampling electricity
The other end of resistance R7 is electrically connected with the voltage input foot of the microcontroller, and the input pin of the first switch tube Q1 connects power supply.
3. atomizer resistance value detection circuit according to claim 2, which is characterized in that the detection circuit, including second
Switching tube Q2, the second current-limiting resistance R11, second voltage sampling resistor R12, detection resistance R13 and the second pull down resistor R9；Institute
The input pin for stating second switch Q2 is electrically connected by the detection resistance R13 with the output pin of the first switch tube Q1, institute
The control foot for stating second switch Q2 is electrically connected by the second current-limiting resistance R11 with the control foot of the microcontroller, institute
The input pin for stating second switch Q2 connects power supply；The input pin of the second switch Q2 passes through the second voltage sampling resistor
R12 is connect with the second pwm signal output pin of the microcontroller.
4. atomizer resistance value detection circuit according to claim 2 or 3, which is characterized in that
The first switch tube Q1 is p-type metal-oxide-semiconductor, and the second switch Q2 is N-type metal-oxide-semiconductor.
5. atomizer resistance value detection circuit according to claim 1, which is characterized in that in the calculating atomizer
After resistance value, comprising:
When the resistance value of the atomizer is less than 0.5 Europe, the output circuit is disconnected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811100042.7A CN109090710B (en) | 2018-09-20 | 2018-09-20 | Atomizer resistance detection circuitry |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811100042.7A CN109090710B (en) | 2018-09-20 | 2018-09-20 | Atomizer resistance detection circuitry |
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| Publication Number | Publication Date |
|---|---|
| CN109090710A true CN109090710A (en) | 2018-12-28 |
| CN109090710B CN109090710B (en) | 2021-01-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811100042.7A Active CN109090710B (en) | 2018-09-20 | 2018-09-20 | Atomizer resistance detection circuitry |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109567280A (en) * | 2019-01-16 | 2019-04-05 | 深圳市海派特光伏科技有限公司 | Atomizer resistance value detection circuit and 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 |
| CN110672937A (en) * | 2019-09-18 | 2020-01-10 | 北京农业智能装备技术研究中心 | Atomization efficiency evaluation method and device of electric atomizer |
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| CN109567280A (en) * | 2019-01-16 | 2019-04-05 | 深圳市海派特光伏科技有限公司 | Atomizer resistance value detection circuit and 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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| Publication number | Publication date |
|---|---|
| CN109090710B (en) | 2021-01-05 |
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Address after: 518000 1b, building 6, saitu digital industrial factory building, 137 Bulan Road, gankeng community, Jihua street, Longgang District, Shenzhen City, Guangdong Province Patentee after: Hengxin Yongji Technology (Shenzhen) Co.,Ltd. Address before: 518112 501, 901, 1001, building 9, China Hisense innovation industry city, No. 3, ganliwu Road, Buji street, Longgang District, Shenzhen City, Guangdong Province Patentee before: SHENZHEN HANGSEN STAR TECHNOLOGY Co.,Ltd. |
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