CN213785384U - Electronic cigarette and stepless airflow induction device for same - Google Patents
Electronic cigarette and stepless airflow induction device for same Download PDFInfo
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- CN213785384U CN213785384U CN202022200248.6U CN202022200248U CN213785384U CN 213785384 U CN213785384 U CN 213785384U CN 202022200248 U CN202022200248 U CN 202022200248U CN 213785384 U CN213785384 U CN 213785384U
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Abstract
The utility model relates to a stepless air current induction system for electron cigarette, including air current inductor, electric capacity detector and the control unit that connects gradually, the electric capacity detector includes first oscillator, second oscillator, frequency divider and counter, and first oscillator is used for receiving the electric capacity signal of air current inductor, and wherein first oscillator and second oscillator all connect the frequency divider, and the counter is connected between first oscillator and frequency divider; the control unit includes controller, memory and encoder, and wherein, the controller receives the output signal of frequency divider and controls memory and encoder respectively, and the memory is received and is saved the record result of counter, and the encoder reads the storage result in the memory, encodes the many gears signal of output to it, the utility model discloses being applied to and having realized in the electron cigarette equipment that the adjustment mode is convenient to the many grades of regulation of electron cigarette power, not only having promoted the electron cigarette user and experienced the sense, still reduced air current inductor and battery power consumption.
Description
Technical Field
The utility model belongs to the electron cigarette field, concretely relates to electron cigarette and be used for stepless air current induction system of electron cigarette.
Background
Electronic cigarettes are increasingly popular among many people as electronic products simulating cigarettes due to their smoke, taste and sensation similar to those of cigarettes. The existing electronic cigarette usually senses whether a user has smoking action through an airflow sensor, and the specific working principle of the airflow sensor is as follows: and generating a corresponding control signal according to the level change times of the oscillation signal output by the oscillation circuit of the airflow sensor within a fixed time, and controlling whether the atomizer of the electronic cigarette works or not through the level of the control signal. However, the user is not always in the smoking state with the same strength, and the heating power of the heating wire determines the amount of the tobacco tar steam inhaled by the user; the tobacco tar steam volume is the smoking volume promptly, its to a great extent has also decided user's smoking experience, when using the smoking of heating power 10 watts and 30 watts, inhaled tobacco tar steam volume will also have very big difference, experience also very different, heating power presses or the rotation regulation carousel goes on through mechanical button among the prior art, need the continuous button or the rotation regulation increase or reduce power during the regulation power, mechanical manual regulation power not only the operation is not convenient, and it is difficult to control to adjust the precision, these two kinds of power regulation mode greatly reduced customer experience feels.
In addition, the oscillation circuit where the electronic cigarette gas flow inductor is located in the prior art is in a continuous working state for a long time, which is not beneficial to reducing the power consumption of the electronic cigarette and the loss of a battery, and is also a problem to be solved urgently in the prior art.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving among the prior art problem that power regulation is not convenient, not accurate, provide a stepless air current induction system who is used for electron cigarette and uses this stepless air current induction system's electron cigarette of exporting many grades of power signals.
A stepless airflow sensing device for an electronic cigarette comprises an airflow sensor, a capacitance detector and a control unit which are sequentially connected, wherein the capacitance detector comprises a first oscillator, a second oscillator, a frequency divider and a counter, the first oscillator is used for receiving a capacitance signal of the airflow sensor, the first oscillator and the second oscillator are both connected with the frequency divider, and the counter is connected between the first oscillator and the frequency divider;
the control unit comprises a controller, a memory and an encoder, wherein the controller receives an output signal of the frequency divider and respectively controls the memory and the encoder, the memory receives and stores a recording result of the counter, and the encoder reads the storage result in the memory and encodes the storage result to output a multi-gear signal.
Further, the oscillation capacitor of the first oscillator includes an output capacitor of the airflow sensor.
Further, the second oscillator outputs an oscillation signal to a frequency divider, an output end of the frequency divider is connected to a counter, and further, a frequency dividing ratio of the frequency divider is N.
Further, the counter counts the output oscillation signal of the first oscillator within N oscillation periods of the second oscillator.
Further, the first oscillator and the second oscillator have the same structure and electrical performance.
Further, the memory records the capacitance of the airflow sensor in the first counting period after power-on as the initial capacitance.
Further, the memory records the real-time capacitance of the airflow sensor as an output capacitance real-time value.
Further, the controller controls the airflow sensor to reset the initial value of the capacitance when the output capacitance of the airflow sensor is lower than the initial capacitance within a prescribed time.
Further, the number of the encoder output signal steps is proportional to the difference between the real-time value of the output capacitance of the airflow sensor and the initial capacitance.
Furthermore, when the capacitance detector detects that the capacitance is increased, in order to eliminate the influence of the cause of the oil leakage, the reference clock circuit in the oscillating circuit is matched with the capacitance detector to jointly detect and judge the abnormal cause, so that the self-smoke absorption phenomenon caused by the oil leakage is prevented.
Further, when the output real-time capacitance is smaller than the initial value of the capacitance, the control unit does not output a signal of the heating electric wire.
Furthermore, the electronic cigarette can be switched on and off by controlling a power gear through the stepless airflow induction device.
Further, the encoder outputs a PWM signal.
Further, the period of the PWM signal is 2 of the oscillation period of the second oscillatormAnd (4) doubling.
Further, the duty ratio of the PWM signal is proportional to the difference between the real-time value and the initial value of the output capacitance of the airflow sensor.
Further, the pulse width of the high level of the PWM signal is proportional to the difference between the real-time value and the initial value of the output capacitor of the airflow sensor.
Further, the encoder outputs a single-wire encoded signal.
Further, the single-wire encoded signal includes one or more of a pilot code, a spacer code, an initial value encoding of an output capacitance of the airflow sensor, a real-time value encoding of the output capacitance of the airflow sensor, and a stop code.
Further, the initial capacitance code of the air flow sensor and the real-time value code of the output capacitance of the air flow sensor are both characterized by 14-bit binary.
Further, an electronic cigarette comprises any one of the stepless airflow induction devices.
The utility model has the advantages that:
(1) the utility model discloses stepless air current induction system advances to vibrate, frequency division, count, output PWM signal through the output electric capacity to the air current inductor, provides different output power gears according to the air current velocity of flow direction difference when detecting the real-time electric capacity of electron cigarette smoking state, and then has realized the effect of regulating and controlling the smoke volume according to user's smoking dynamics, has optimized user experience and has felt.
(2) The utility model provides an among the prior art mechanical transfer manual regulation and control power not accurate and the defect of simple operation, need not to add button, carousel, have small, light advantage than prior art.
(3) The utility model discloses a stepless air current induction system regulation and control power gear signal can also control lighting, extinguishing and the standby state of electron cigarette through stepless air current device.
(4) Be provided with this real novel stepless air current induction system's electron cigarette, can effectively reduce the electron cigarette energy consumption than prior art, the live time of extension electron cigarette and battery.
Drawings
FIG. 1 is a schematic structural view of the stepless airflow sensing device of the present invention;
fig. 2 is a schematic diagram of the output multi-gear power of the stepless airflow sensing device for the electronic cigarette according to the present invention;
FIG. 3 is a schematic diagram of the PWM waveform output by the stepless airflow sensing device in the embodiment of the present invention;
FIG. 4 is a schematic diagram of a waveform of a single-line coded output in an embodiment of the present invention;
Detailed Description
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings and examples. The following detailed description of the embodiments and the accompanying drawings are provided to illustrate the principles of the invention and are not intended to limit the scope of the invention, which is not limited to the preferred embodiments described, but is defined by the appended claims. It is understood that the terms "a" and "an" should be interpreted as meaning that a number of one element or element is one in one embodiment, while a number of other elements is one in another embodiment, and the terms "a" and "an" should not be interpreted as limiting the number.
The terminology used herein is for the purpose of describing various embodiments only and is not intended to be limiting. As used herein, the singular forms are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, numbers, steps, operations, components, elements, or combinations thereof, but do not preclude the presence or addition of one or more other features, numbers, steps, operations, components, elements, or groups thereof.
Referring to fig. 1-2, a stepless airflow sensing device for an electronic cigarette comprises an airflow sensor, a capacitance detector and a control unit which are connected in sequence, wherein the capacitance detector comprises a first oscillator, a second oscillator, a frequency divider and a counter, the first oscillator is used for receiving a capacitance signal of the airflow sensor, the first oscillator and the second oscillator are both connected with the frequency divider, and the counter is connected between the first oscillator and the frequency divider; the control unit comprises a controller, a memory and an encoder, wherein the controller receives the output signal of the frequency divider and respectively controls the memory and the encoder, the memory receives and stores the recording result of the counter, and the encoder reads the storage result in the memory and encodes the storage result to output a multi-gear signal.
The oscillation capacitor of the first oscillator comprises an output capacitor of the airflow inductor, the second oscillator outputs an oscillation signal to the frequency divider, and the output end of the frequency divider is connected with the counter. The counter counts the output oscillation signal of the first oscillator within N oscillation periods of the second oscillator. The first oscillator and the second oscillator have the same structure and electrical property, and the structure can only effectively reduce the cost and design purchasing difficulty of the device. The frequency dividing ratio of the frequency divider is N, the memory records the capacitance of the airflow sensor in the first counting period after power-on as an initial capacitance, and the memory records the real-time capacitance of the airflow sensor as an output capacitance real-time value; when the output capacitance of the airflow sensor is lower than the initial capacitance within a specified time, the controller controls the airflow sensor to reset the initial value of the capacitance. The utility model discloses in set up electric capacity initial value resetting condition, prevented that the electron cigarette can't light the problem at lower airflow, ensured the normal work of electron cigarette. Further, encoder output signal gear quantity with the difference between air current sensor output capacitance real-time value and initial electric capacity is directly proportional, further the utility model discloses according to the difference between output capacitance real-time value and the initial electric capacity, electric capacity rise value is big more promptly, and output gear is more, and then has solved the shelves that traditional machinery shelves adjustment power exists and be the limitation and not accurate problem.
When the capacitance detector detects that the capacitance is increased, in order to eliminate the influence of the reason of oil leakage, the reference clock circuit in the oscillating circuit is matched with the capacitance detector to jointly detect and judge the abnormal reason, so that the phenomenon of self-smoke absorption caused by oil leakage is prevented; when the output real-time capacitance is smaller than the initial value of the capacitance, the control unit does not output the signal of the heating electric heating wire. Furthermore, the electronic cigarette switch can be controlled by controlling the power gear through the stepless airflow induction device.
Referring to fig. 3, in the embodiment of the present invention, the encoder outputs the PWM signal, the duty ratio of the PWM signal is proportional to the difference between the real-time value and the initial value of the output capacitance of the airflow sensor, and meanwhile, the pulse width of the high level of the PWM signal is proportional to the difference between the real-time value and the initial value of the output capacitance of the airflow sensor. Wherein the PWM signal period is 2 of the oscillation period of the second oscillatormIf n is 10, m can be selected to be 6, so that 64 levels of airflow sensing resolution are achieved; if m is 5, 32 levels of airflow sensing resolution are achieved. The utility model discloses a through detecting airflow inductor output electric capacity and carrying out many gears regulation and control to output, and then can realize adjusting output and output voltage, multi-stage resolution makes the user experience different smog volume when the smoking strength of difference, and user experience feels further promotion.
Referring to fig. 4, in another implementation of the electronic cigarette stepless airflow device single-wire encoding output waveform, the encoder outputs a single-wire encoding signal, wherein the single-wire encoding signal comprises one or more of a guide code, a space code, an initial value encoding of an airflow sensor output capacitance, a real-time value encoding of the airflow sensor output capacitance and a stop code. Further, the initial capacitance code of the airflow sensor and the real-time value code of the output capacitance of the airflow sensor can be selected from 14-bit binary characteristics, such as that the single-line coded signal is the initial value C of the guide code, the interval code and the output capacitance of the airflow sensor0Real-time value C of output capacitor of coding + airflow sensorXCode + stop code. Furthermore, the single-line coded signal adopts pulse width coding, and the pulse width of the code '0' is less than 40%; the pulse width of code "1" is more than 60% smaller. The encoder in the stepless airflow device is common, low in price and easy to purchase, and the encoding method is simple and rapid.
Further, the encoder outputs a multi-shift signal, wherein the number of shift signals depends on the ratio of the difference between the real-time value Cx of the output capacitance of the airflow sensor and the initial value C0 to the initial value C0 of the output capacitance, wherein the multi-shift signal has a hysteresis characteristic, i.e. in the third gear and above, the encoder has an output; the encoder still has output after the electronic cigarette is returned to the second gear and the first gear, and the arrangement prevents the situation that the power cannot be output and the electronic cigarette is heated when the power is rapidly reduced, and prevents the electronic cigarette from self-extinguishing.
Referring to fig. 1-4, an electronic cigarette comprises any one of the stepless airflow sensing devices described above, and further comprises a constant voltage control unit and an atomizer, wherein the output constant voltage controller is connected with and controls the output end of the encoder, a decoder is arranged in the constant voltage controller to receive and translate a power coding signal output by the encoder, so that the power is graded, the power is adjusted to adjust the voltage, and the multistage power is matched to heat a heating wire in the thermal atomizer, so that the output smoke volume can be controlled according to different dynamics. All the components used by the electronic cigarette device can be integrated in one or more chips, and part or all of the functional components used by the electronic cigarette device can also be assembled in the microphone. The utility model discloses set up stepless air current device's electron cigarette, rational in infrastructure, control method is simple, has accurate and small advantage than mechanical adjustment power, is fit for implementing among the prior art and reforms transform.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Claims (10)
1. A stepless airflow induction device for an electronic cigarette comprises an airflow inductor, a capacitance detector and a control unit which are connected in sequence,
the capacitance detector comprises a first oscillator, a second oscillator, a frequency divider and a counter, wherein the first oscillator is used for receiving a capacitance signal of the airflow inductor, the first oscillator and the second oscillator are both connected with the frequency divider, and the counter is connected between the first oscillator and the frequency divider;
the control unit comprises a controller, a memory and an encoder, wherein the controller receives an output signal of the frequency divider and respectively controls the memory and the encoder, the memory receives and stores a recording result of the counter, and the encoder reads the storage result in the memory and encodes the storage result to output a multi-gear signal.
2. The stepless airflow sensing device according to claim 1, wherein the second oscillator outputs an oscillation signal to a frequency divider, an output end of the frequency divider is connected with a counter, and a division ratio of the frequency divider is N.
3. The stepless airflow sensing device according to claim 2, wherein the counter counts the output oscillation signal of the first oscillator within N oscillation periods of the second oscillator.
4. The stepless airflow sensing device of claim 1, wherein the memory records the capacitance of the airflow sensor in the first counting period after power-up as the initial capacitance.
5. The stepless airflow sensing device of claim 4, wherein the controller controls the airflow sensor to reset the initial value of the capacitance when the airflow sensor outputs a capacitance lower than the initial capacitance within a prescribed time.
6. The stepless airflow sensing device according to claim 1, wherein the number of encoder output signal steps is proportional to the difference between the real-time value of the airflow sensor output capacitance and the initial capacitance.
7. The stepless airflow sensing device according to claim 6, wherein the encoder outputs a PWM signal, the duty cycle of the PWM signal is proportional to the difference between the real-time value and the initial value of the airflow sensor output capacitance.
8. The stepless airflow sensing device of claim 7, wherein the encoder outputs a single wire encoded signal.
9. The stepless airflow sensing device of claim 8, wherein the single wire coded signal includes one or more of a pilot code, a spacer code, an initial value code of an airflow sensor output capacitance, a real time value code of an airflow sensor output capacitance, and a stop code.
10. An electronic cigarette comprising the stepless airflow sensing device according to any one of claims 1 to 9.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022200248.6U CN213785384U (en) | 2020-09-30 | 2020-09-30 | Electronic cigarette and stepless airflow induction device for same |
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| CN202022200248.6U CN213785384U (en) | 2020-09-30 | 2020-09-30 | Electronic cigarette and stepless airflow induction device for same |
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| CN213785384U true CN213785384U (en) | 2021-07-27 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115067577A (en) * | 2022-07-12 | 2022-09-20 | 无锡市晶源微电子有限公司 | Airflow sensing device and electronic cigarette device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115067577A (en) * | 2022-07-12 | 2022-09-20 | 无锡市晶源微电子有限公司 | Airflow sensing device and electronic cigarette device |
| CN115067577B (en) * | 2022-07-12 | 2023-10-31 | 无锡市晶源微电子股份有限公司 | Airflow sensing device and electronic cigarette device |
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Address after: No. 5, Xijin Road, Xinwu District, Wuxi City, Jiangsu Province, 214028 Patentee after: Wuxi Jingyuan Microelectronics Co.,Ltd. Address before: 214028 room 209, building a, block 106-c, Xinwu District, Wuxi City, Jiangsu Province Patentee before: Wuxi Jingyuan Microelectronics Co.,Ltd. |