CN219270177U - Control circuit for electronic cigarette and electronic cigarette - Google Patents

Abstract

The utility model discloses a control circuit for an electronic cigarette and the electronic cigarette, wherein the control circuit comprises: the device comprises a heating module, a capacitive sensor, a constant current source, a timing module and a control module; the heating module is arranged in the shell; the capacitive sensor is arranged in a circuit area of the shell, and the air flow blown in by a user along the air passage and the air inlet passage hole causes the capacitance value of the capacitive sensor to change; the constant current source charges the capacitive sensor; the timing module is electrically connected with the constant current source and is used for calculating the charging time of the constant current source so as to obtain target charging time; the target charging time length is determined according to the capacitance value of the capacitive sensor; the control module is electrically connected with the timing module and the heating module, and is used for determining the state information of the capacitive sensor according to the target charging time length and the preset time length range and controlling the heating module to be started or closed according to the state information. The utility model can improve the accuracy of starting and closing the electronic cigarette and reduce the opening and closing control caused by misoperation.

Description

Control circuit for electronic cigarette and electronic cigarette

Technical Field

The utility model relates to the technical field of voltage regulating circuits, in particular to a control circuit for an electronic cigarette and the electronic cigarette.

Background

Currently, the electronic cigarette is mainly controlled to be started or closed by blowing and sucking. However, the traditional air suction and air blowing are mainly conducted through the capacitive sensor, so that the electronic cigarette is controlled to be started or closed through the size of the capacitive sensor, and if the electronic cigarette is directly started under the condition that misoperation exists by a user, the experience of the user can be affected.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the control circuit for the electronic cigarette provided by the utility model can accurately perform the starting operation of the electronic cigarette, reduce the false starting and improve the experience of a user using the electronic cigarette.

The utility model further provides the electronic cigarette.

In a first aspect, an embodiment of the present utility model provides a control circuit for an electronic cigarette, applied to an electronic cigarette, the electronic cigarette comprising: the utility model provides a control circuit, including casing and fine pipe of glass, the inside circuit area that is equipped with of casing, the circuit area of casing is placed control circuit, casing bottom and circuit area are equipped with the inlet port hole, fine pipe of glass is located in the casing, just fine pipe of glass is equipped with the air flue, the air flue intercommunication the inlet port hole, control circuit includes:

the heating module is arranged inside the shell, is connected with the glass fiber tube and is communicated with the air passage;

the capacitive sensor is arranged in a circuit area of the shell, and the air flow blown by a user along the air passage and the air inlet passage hole causes the capacitance value of the capacitive sensor to change;

the constant current source is electrically connected with the capacitive sensor and charges the capacitive sensor;

the timing module is electrically connected with the constant current source and is used for calculating the charging duration of the constant current source so as to obtain target charging duration; the target charging time length is determined according to the capacitance value of the capacitive sensor;

the control module is electrically connected with the timing module and the heating module, and is used for determining the state information of the capacitive sensor according to the target charging duration and the preset duration range and controlling the heating module to be started or closed according to the state information.

The control circuit for the electronic cigarette has at least the following beneficial effects: the user blows air into the capacitive sensor along the air passage and the air inlet passage hole to change the capacitance value of the capacitive sensor, the constant current source is arranged to charge the capacitive sensor, and the charging time of the sensor is detected to obtain the target charging time through the timing module, so that the state information of the capacitive sensor is compared according to the target charging time and the preset time range, whether the user blows air or inhales air is determined according to the state information, the heating module is controlled to be started or closed according to the state information of the capacitive sensor, and the electronic cigarette is enabled to be started and closed more accurately.

According to further embodiments of the present utility model, a control circuit for an electronic cigarette, the heating module includes:

the atomizing core support is connected with the glass fiber tube;

the non-woven fabric is arranged below the atomizing core support;

the heating wires are arranged between the non-woven fabrics and used for starting heating or stopping heating according to the control module.

According to further embodiments of the present utility model, a control circuit for an electronic cigarette, the circuit further comprises: the indication module is electrically connected with the control module and is used for outputting indication signals according to the control signals.

According to further embodiments of the present utility model, a control circuit for an electronic cigarette, the control module includes:

the control unit is electrically connected with the timing module and is used for comparing the target charging duration with the preset duration range to output a control signal;

the driving unit is electrically connected with the control unit and the heating module and is used for outputting a driving signal to the heating module according to the control signal so as to enable the heating module to be started or closed.

According to further embodiments of the present utility model, a control circuit for an electronic cigarette, the driving unit includes:

the second resistor is electrically connected with the control unit;

one end of the third resistor is connected with a power supply;

and the grid electrode of the MOS tube is connected with the other end of the second resistor, the source electrode of the MOS tube is connected with the power supply, and the drain electrode of the MOS tube is connected with the third resistor.

According to further embodiments of the present utility model, a control circuit for an electronic cigarette, the electronic cigarette further comprises: the voltage regulating assembly is arranged at the top of the shell and is used for presetting an output voltage value; the circuit further comprises:

and the adjusting module is electrically connected with the control module and is used for adjusting and determining the output power of the control module according to the output voltage value.

According to further embodiments of the present utility model, a control circuit for an electronic cigarette, the voltage regulating assembly includes:

the pressure regulating knob is arranged at the top of the shell;

and the voltage regulating plate is used for regulating the output voltage value according to the rotating scale of the voltage regulating knob.

Control circuit for an e-cigarette according to further embodiments of the present utility model the conditioning module comprises:

one end of the fourth resistor is connected with a power supply, and the other end of the fourth resistor is connected with the control module;

the adjustable end of the adjustable resistor is connected with the fourth resistor and the control module, is connected with the voltage regulating plate, and is used for regulating the output power of the control module according to the output voltage value of the voltage regulating plate, and one end of the adjustable resistor is connected with the control module.

According to further embodiments of the present utility model, a control circuit for an electronic cigarette further includes a charging module including:

a power interface;

the voltage stabilizing unit is electrically connected with the power interface and used for stabilizing a power signal input by the power interface;

and the charging unit is electrically connected with the voltage stabilizing unit and is used for supplying power to the control module by the power supply signal after voltage stabilization.

According to further embodiments of the present utility model, a control circuit for an electronic cigarette, the charging unit includes:

the constant current source is connected with the capacitive sensor to charge the capacitive sensor;

the first pin of the charging chip is connected with the control module, and the third pin of the charging chip is connected with the constant current source;

one end of the first capacitor is connected with the voltage stabilizing unit, and the other end of the first capacitor is grounded;

and one end of the fifth resistor is connected between the first capacitor and the ground, and the other end of the fifth resistor is connected with a fifth pin of the charging chip.

In a second aspect, an embodiment of the present utility model provides an electronic cigarette, the electronic cigarette comprising:

a control circuit as described in the first aspect for an electronic cigarette;

an electronic cigarette body.

The electronic cigarette provided by the embodiment of the utility model has at least the following beneficial effects: the control circuit is like the control circuit for the electronic cigarette, so that the starting and closing operation of the electronic cigarette is more accurate, and the false starting and false extinguishing are reduced, so that the use experience of a user is improved.

Additional features and advantages of the application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the application. The objectives and other advantages of the application may be realized and attained by the structure particularly pointed out in the written description and drawings.

Drawings

FIG. 1 is a block diagram of a control circuit for an electronic cigarette in accordance with one embodiment of the present utility model;

FIG. 2 is a block diagram of another embodiment of a control circuit for an electronic cigarette in accordance with an embodiment of the present utility model;

FIG. 3 is a schematic circuit diagram of one embodiment of a control circuit for an electronic cigarette in accordance with an embodiment of the present utility model;

FIG. 4 is a schematic circuit diagram of an embodiment of a constant current source in a control circuit for an electronic cigarette according to another embodiment of the present utility model;

fig. 5 is a schematic structural diagram of an electronic cigarette in a control circuit for an electronic cigarette according to an embodiment of the present utility model.

Reference numerals: 100. a heating module; 110. an atomizing core support; 120. a nonwoven fabric; 130. a heating wire; 200. a capacitive sensor; 300. a charging module; 310. a power interface; 320. a voltage stabilizing unit; 330. a charging unit; 400. a timing module; 500. a control module; 510. a control unit; 520. a driving unit; 530. a constant current source; 600. an indication module; 700. an adjustment module; 810. a housing; 820. a glass fiber tube; 821. an airway; 830. a circuit region; 831. an inlet channel hole; 840. a pressure regulating assembly; 841. a pressure regulating knob; 842. a pressure regulating plate; 850. a drip nozzle; 860. a main board; 861. sealing the main board with silica gel; 870. and a charging port.

Detailed Description

The conception and the technical effects produced by the present utility model will be clearly and completely described in conjunction with the embodiments below to fully understand the objects, features and effects of the present utility model. It is apparent that the described embodiments are only some embodiments of the present utility model, but not all embodiments, and that other embodiments obtained by those skilled in the art without inventive effort are within the scope of the present utility model based on the embodiments of the present utility model.

In the description of the present utility model, if an orientation description such as "upper", "lower", "front", "rear", "left", "right", etc. is referred to, it is merely for convenience of description and simplification of the description, and does not indicate or imply that the apparatus or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the utility model. If a feature is referred to as being "disposed," "secured," "connected," or "mounted" on another feature, it can be directly disposed, secured, or connected to the other feature or be indirectly disposed, secured, connected, or mounted on the other feature.

In the description of the embodiments of the present utility model, if "several" is referred to, it means more than one, if "multiple" is referred to, it is understood that the number is not included if "greater than", "less than", "exceeding", and it is understood that the number is included if "above", "below", "within" is referred to. If reference is made to "first", "second" it is to be understood as being used for distinguishing technical features and not as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

The conventional electronic cigarette detects blowing or sucking air through the capacitive sensor, so as to detect the capacitance value of the capacitive sensor through blowing and sucking air, and control the electronic cigarette to be started or closed according to the capacitance value. However, misjudgment is easy to occur by directly controlling the electronic cigarette to be started or closed through the capacitance value, so that the experience of a user using the electronic cigarette is affected.

Based on this, this application embodiment discloses control circuit and electron cigarette for electron cigarette to through setting up air flue and intake duct hole, and the user blows and enter into capacitive sensor along air flue, intake duct hole, need not to set up capacitive sensor in the air inlet of air flue, in order to prevent capacitive sensor inductive performance decline. And then the constant current source charges the capacitive sensor, and the charging time of the sensor is detected by the timing module to obtain the target charging time, so that the state information of the capacitive sensor is determined according to the comparison between the target charging time and the preset time range, and whether a user blows or inhales is determined according to the state information, and the heating module is controlled to start or close according to the blowing or inhaling operation of the user, so that the electronic cigarette is controlled to start or close more accurately. Because the target charging time length of the constant current source for charging the capacitive sensor is unchanged when the electronic cigarette normally operates, if the target charging time length is reduced or increased to a certain degree to determine to be blowing or sucking, the blowing and sucking judgment is more accurate, and the electronic cigarette is further controlled to be started or closed more accurately.

Referring to fig. 1 and 5, block diagrams of control circuits for an e-cigarette in an embodiment of the utility model are shown. A control circuit for electronic cigarette is applied to the electronic cigarette, and the electronic cigarette includes: the device comprises a shell 810 and a glass fiber pipe 820, wherein a circuit area 830 is arranged inside the shell 810, a control circuit is placed in the circuit area 830 of the shell 810, an air inlet hole 831 is formed in the bottom of the shell 810 and the circuit area 830, the glass fiber pipe 820 is arranged in the shell 810, an air passage 821 is formed in the glass fiber pipe 820, and the air passage 821 is communicated with the air inlet hole 831. The control circuit for an electronic cigarette comprises: the device comprises a heating module 100, a capacitive sensor 200, a constant current source 530, a timing module 400 and a control module 500; the heating module 100 is disposed inside the housing 810, and the heating module 100 is connected to the glass fiber pipe 820 and is communicated with the air flue 821; the capacitive sensor 200 is disposed in the circuit area 830 of the housing 810, and is configured to detect an air flow blown by a user along the air duct 821 and the air inlet hole 831 to adjust a capacitance thereof; the constant current source 530 is electrically connected to the capacitive sensor 200, and charges the capacitive sensor 200; the timing module 400 is electrically connected to the constant current source 530, and is configured to calculate a charging duration of the constant current source 530 to obtain a target charging duration; wherein, the target charging time length is determined according to the capacitance value of the capacitive sensor 200; the control module 500 is electrically connected to the timing module 400 and the heating module 100, and is used for controlling the heating module 100 to be started or shut down according to the target charging duration and the preset duration range. The user blows air into the capacitive sensor 200 through the air passage 821 and the air passage hole 831, so that the capacitive sensor 200 is positioned in the circuit area 830 of the housing 810, thereby preventing the sensitivity from being reduced due to the proximity of the capacitive sensor 200 to the inlet of the air passage 821. The capacitive sensor 200 changes the capacitance value of the capacitive sensor 200 after sensing the airflow, and the constant current source 530 charges the capacitive sensor 200, because the capacitive sensor 200 changes the capacitance value of the capacitive sensor 200 due to the blowing and sucking operation, the electric energy which can be stored by the capacitive sensor 200 also changes, so the target charging time length of the capacitor sensor 200 charged by the timing module 400 detecting the constant current source 530 also changes, and the heating module 100 is controlled to be started or closed according to the target charging time length and the preset time length range, so that the starting or closing control of the electronic cigarette is more accurate, and the situation of false starting and false extinguishing caused by the false blowing and sucking operation is reduced instead of directly controlling according to the capacitance value of the capacitive sensor 200.

Referring to fig. 5, a nozzle 850 is further disposed on the housing 810, and the nozzle 850 is connected to the glass fiber tube 820, and the nozzle 850 is provided with an opening communicating with the air passage 821, so that a user blows air into the air passage 821 through the nozzle 850.

Referring to fig. 2, in some embodiments, the control module 500 includes: the control unit 510 and the driving unit 520, the control unit 510 is electrically connected with the timing module 400, and is used for comparing the target charging duration with a preset duration range to output a control signal; the driving unit 520 is electrically connected to the control unit 510 and the heat generating module 100, and is configured to output a driving signal to the heat generating module 100 according to the control signal, so that the heat generating module 100 is started or shut down.

It should be noted that, when the user inhales, the capacitance value of the capacitive sensor 200 becomes larger, the target charging period becomes longer, and the detection target charging period is longer than the upper limit value of the preset period range, the control unit 510 outputs the first control signal to the driving unit 520, and the driving unit 520 outputs the first driving signal to the heating module 100 according to the first control signal, so as to control the starting of the heating module 100. When the user blows, when the capacitance value of the capacitive sensor 200 becomes smaller, the target charging time period becomes shorter, and the target charging time period is smaller than the lower limit value of the preset time period range, the control unit 510 outputs a second control signal to the driving unit 520, so that the driving unit 520 outputs a second driving signal to the heating module 100 according to the second control signal, so as to control the heating module 100 to be turned off. Therefore, when the target charging time period is not longer than the preset time period range due to the blowing and sucking operation, that is, the target charging time period is not increased or reduced to a certain percentage, the capacitance value of the capacitive sensor 200 is considered to be smaller due to misoperation or wind blowing of the user, so that the heating module 100 is not started or closed if the target charging time period is still within the preset time period range, the starting and closing operation of the electronic cigarette is more accurate, and the false starting and the false closing are reduced, so that the experience of using the electronic cigarette by the user is improved.

In some embodiments, referring to fig. 5, the heat generating module 100 includes: an atomizing core support 110, a non-woven fabric 120 and a heating wire 130; the atomizing core support 110 is connected with the glass fiber tube 820; the non-woven fabric 120 is arranged below the atomizing core support 110; the heating wires 130 are disposed between the non-woven fabrics 120, and are used for starting heating or stopping heating according to the control module 500. The heating wire 130 is started according to the first driving signal output by the driving unit 520, and then the heating wire 130 generates heat to heat the tobacco tar of the non-woven fabric 120 to generate smoke, and the smoke enters the air flue 821 after being atomized through the atomizing core support 110, so that the atomized smoke is easy to control. If the heating wire 130 receives the second driving signal from the driving unit 520, the heating is stopped, and smoke is not generated any more when the tobacco tar of the non-woven fabric 120 is not heated. Therefore, the heating wire 130 is controlled to be opened or closed by the driving unit 520, so that the generation or extinction of the electronic cigarette smoke can be realized, and the electronic cigarette can be easily opened or closed.

In some embodiments, the control circuit for an electronic cigarette further includes an indication module 600, the indication module 600 is electrically connected to the control module 500, and the indication module 600 is configured to output an indication signal according to the control signal. Therefore, by setting the indication module 600 to output the indication signal according to the control signal of the control module 500, the user can clearly know the on-off state of the electronic cigarette according to the indication signal, so as to improve the user experience.

In some embodiments, the electronic cigarette further comprises: the voltage regulating assembly 840, the voltage regulating assembly 840 is disposed at the top of the housing 810, and the voltage regulating assembly 840 is used for presetting an output voltage value; the circuit further comprises: the adjusting module 700, the adjusting module 700 is electrically connected to the control module 500, and is configured to adjust the output power of the control module 500 according to the output pressure value. Therefore, by setting the pressure regulating component 840 to preset an output pressure value, the regulating module 700 can regulate the output power of the control module 500 according to the output pressure value, so as to realize automatic control of the heating degree of the heating module 100, so as to improve the use experience of the user.

Referring to fig. 5, the voltage regulating assembly 840 includes: a pressure adjusting knob 841 and a pressure adjusting plate 842; the pressure adjusting knob 841 is arranged at the top of the shell 810; pressure regulating plate 842, pressure regulating plate 842 adjusts the output pressure value according to the scale that pressure regulating knob 841 rotated. The voltage regulating knob 841 is further provided with a pressing member (not shown in the figure) pressing against the voltage regulating plate 842, when the voltage regulating knob 841 rotates, the pressing member simultaneously rotates to press against the voltage regulating plate 842, the voltage regulating plate 842 is arranged inside the shell 810 and is connected with the pressing member of the voltage regulating knob 841, the pressing member rotates to drive the pressing member to rotate, the pressing member rotates to press the voltage regulating plate 842, so that the output pressure value of the voltage regulating plate 842 changes, and then the regulating module 700 regulates the self resistance value according to the output pressure value to regulate the output power of the control module 500, so that the output power of the control module 500 is simple to regulate.

Referring to fig. 2 and 3, in some embodiments, the control unit 510 is a main controller U1; the indication module 600 includes: the control unit 510 is connected to first resistance R1 and pilot lamp LED, and pilot lamp LED one end is connected the power and the other end is connected first resistance R1. The main controller U1 outputs the first control signal as a low level, and the indicator light LED is turned on after being connected to the low level, so the indicator light LED is turned on. The main controller U1 outputs the second control signal as a high level, and the indicator light LED is turned off after being connected to the high level, so that the indicator light LED is set as an indication of the main controller U1 to control the heating module 100 to be started or turned off, so as to improve the use experience of the user.

In some embodiments, the driving unit 520 includes: the second resistor R2, the third resistor R3 and the MOS tube Q1; the second resistor R2 is electrically connected to the control unit 510; one end of the third resistor R3 is connected with a power supply; the grid electrode of the MOS tube Q1 is connected with the other end of the second resistor R2, the source electrode is connected with a power supply, and the drain electrode is connected with the third resistor R3. The MOS transistor Q1 is a P-channel MOS transistor Q1, the control unit 510 is a main controller U1, when the target charging time period is longer than the upper limit value of the preset time period range, the main controller U1 outputs a first control signal to be a low level, and the main controller U1 outputs the low level to the MOS transistor Q1, and when the MOS transistor Q1 is turned on, the heating module 100 is connected to the high level and then starts ignition. If the target charging duration is less than the lower limit value of the preset duration range, the main controller U1 outputs the second control signal to be at a high level, the MOS transistor Q1 is cut off after being connected to the high level, and the heating module 100 stops working after being connected to the low level. Therefore, the MOS tube Q1 is arranged to be connected with the main controller U1, so that the heating module 100 is controlled to be started or stopped according to the high level or the low level output by the main controller U1, and the heating module 100 is controlled to be started or stopped more stably.

In some embodiments, the adjustment module 700 includes: a fourth resistor R4 and an adjustable resistor VR1; one end of the fourth resistor R4 is connected with a power supply, and the other end of the fourth resistor R4 is connected with the control module 500; the adjustable end of the adjustable resistor VR1 is connected with the fourth resistor R4 and the control module 500, and one end of the adjustable resistor VR1 is connected with the control module 500. The resistance value of the electronic cigarette is adjusted according to the output pressure value of the voltage plate through the adjustable resistor VR1, and then the timing module 400 adjusts the output power of the control module 500 according to the resistance value of the adjustable resistor VR1, so that the output power is easy to adjust, and the adjustment of the blowing and sucking degree of the electronic cigarette is simplified.

Referring to fig. 2 and 4, in some embodiments, the control circuit for the electronic cigarette further includes a charging module 300, and the charging module 300 includes: a power interface 310, a voltage stabilizing unit 320, and a charging unit 330; the voltage stabilizing unit 320 is electrically connected to the power interface 310, and is used for stabilizing a power signal input by the power interface 310; the charging unit 330 is electrically connected to the voltage stabilizing unit 320, and is configured to supply the control module 500 with the power signal after voltage stabilization. After the power interface 310 is set for charging, the power voltage is stabilized by the voltage stabilizing unit 320 and then is input to the control module 500 by the charging unit 330, so as to provide electric energy to the control module 500, so that the control module 500 works normally.

In some embodiments, the voltage stabilizing unit 320 includes: the power supply device comprises a sixth resistor R6, a seventh resistor R7 and a second capacitor C2, wherein one end of the sixth resistor R6 is connected with a power supply interface 310 and a charging unit 330, the other end of the sixth resistor R6 is connected with one end of the seventh resistor R7, and the other end of the seventh resistor R7 is grounded; one end of the second capacitor C2 is connected with the other end between the sixth resistor R6 and the seventh resistor R7 and grounded. Therefore, the voltage stabilizing unit 320 composed of the sixth resistor R6, the seventh resistor R7 and the second capacitor C2 stabilizes the power voltage and outputs the power voltage, so as to ensure that the control module 500 works stably.

In some embodiments, the charging unit 330 includes: the charging chip U2, the first capacitor C1 and the fifth resistor R5; the first pin of the charging chip U2 is connected with the control module 500, and the third pin is connected with the constant current source 530; one end of the first capacitor C1 is connected with the voltage stabilizing unit 320, and the other end of the first capacitor C is grounded; one end of the fifth resistor R5 is connected between the first capacitor C1 and the ground, and the other end of the fifth resistor R5 is connected with a fifth pin of the charging chip U2. The charging unit 330 is formed by setting the first capacitor C1, the charging chip U2 and the fifth resistor R5 to realize the charging operation of the control module 500, and the constant current source 530 in the control module 500 is enabled to store electric energy by charging the control module 500, so that the constant current source 530 charges the capacitive sensor 200.

Referring to fig. 5, in some embodiments, a circuit area 830 inside a housing 810 is provided with a motherboard 860, a capacitive sensor 200 is disposed on the motherboard 860, a charging module 300, a control module 500, a timing module 400, and an adjusting module 700 are disposed on the motherboard 860, the motherboard 860 is connected with a charging chip U2, and a motherboard sealing silica gel 861 is disposed between the motherboard 860 and the charging chip U2, so as to seal and isolate the charging chip U2 and the motherboard 860 through the motherboard sealing silica gel 861, and a charging port 870 is disposed at the bottom of the housing 810, and the charging port 870 is connected with the power interface 310; and the charging port 870 is any one of a c-type charging port, a micro usb charging port, and a lightning charging port, and the type of the charging port 870 is not particularly limited.

In addition, the embodiment of the application also discloses an electronic cigarette, and the electronic cigarette comprises: control circuit and electron cigarette body, and control circuit is as above-mentioned control circuit for the electron cigarette for the start-up and the closing operation of electron cigarette are more accurate, reduce the mistake and start and go out with mistake, in order to improve user's use experience sense.

A control circuit for an electronic cigarette according to an embodiment of the present utility model will be described in detail with reference to fig. 1 to 5. It is to be understood that the following description is exemplary only and is not intended to limit the utility model in any way.

The power supply voltage is input to the voltage stabilizing unit 320 through the power supply interface 310 for voltage stabilization, and then the charging unit 330 charges the main controller U1 according to the voltage-stabilized power supply voltage, and monitors the charging full time of the capacitive sensor 200 through the timing module 400 to obtain the target charging duration. When a user inhales, air enters the capacitive sensor 200 along the air passage 821 and the air inlet passage hole 831, so that the capacitance value of the capacitive sensor 200 is increased, the charging time of the constant current source 530 to the capacitive sensor 200 is increased, the target charging time is longer than the upper limit value of the preset time range, the main controller U1 outputs a low level to the indicator light LED and the MOS tube Q1, the MOS tube Q1 is conducted and then the heating wire 130 is controlled to be started, the heating wire 130 generates heat to heat tobacco tar of the non-woven fabric 120 so as to generate smoke, the smoke enters the air passage 821 after being atomized through the atomization core bracket 110, and a user can inhale the smoke through the drip nozzle 850. Meanwhile, the LED of the indicator lamp is lightened so as to realize accurate starting of the electronic cigarette. When a user blows, the capacitance value of the capacitive sensor 200 becomes smaller, the charging time of the constant current source 530 to the capacitive sensor 200 becomes shorter, the target charging time is smaller than the lower limit value of the preset time range, the main controller U1 outputs a high level to the MOS tube Q1 and the indicator light LED, the MOS tube Q1 is cut off to control the heating wire 130 to be closed, smoke is not generated when the heating wire 130 does not heat tobacco tar of the non-woven fabric 120 any more, and the indicator light LED is closed, so that the electronic cigarette is accurately closed, the error closing phenomenon is reduced, and the user experience is improved.

The above described apparatus embodiments are merely illustrative, wherein the units illustrated as separate components may or may not be physically separate, i.e. may be located in one place, or may be distributed over a plurality of network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

Those of ordinary skill in the art will appreciate that all or some of the steps, systems, and methods disclosed above may be implemented as software, firmware, hardware, and suitable combinations thereof. Some or all of the physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on computer readable media, which may include computer storage media (or non-transitory media) and communication media (or transitory media). The term computer storage media includes both volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data, as known to those skilled in the art. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital Versatile Disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can be accessed by a computer. Furthermore, as is well known to those of ordinary skill in the art, communication media typically embodies computer readable instructions, data structures, program modules or other data in a modulated data signal such as a carrier wave or other transport mechanism and includes any information delivery media.

The embodiments of the present utility model have been described in detail with reference to the accompanying drawings, but the present utility model is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present utility model. Furthermore, embodiments of the utility model and features of the embodiments may be combined with each other without conflict.

Claims (10)

1. A control circuit for an electronic cigarette, characterized by being applied to an electronic cigarette, the electronic cigarette comprising: the utility model provides a control circuit, including casing and fine pipe of glass, the inside circuit area that is equipped with of casing, the circuit area of casing is placed control circuit, casing bottom and circuit area are equipped with the inlet port hole, fine pipe of glass is located in the casing, just fine pipe of glass is equipped with the air flue, the air flue intercommunication the inlet port hole, control circuit includes:

the heating module is arranged inside the shell, is connected with the glass fiber tube and is communicated with the air passage;

the capacitive sensor is arranged in a circuit area of the shell, and the air flow blown by a user along the air passage and the air inlet passage hole causes the capacitance value of the capacitive sensor to change;

the constant current source is electrically connected with the capacitive sensor and charges the capacitive sensor;

the timing module is electrically connected with the constant current source and is used for calculating the charging duration of the constant current source so as to obtain target charging duration; the target charging time length is determined according to the capacitance value of the capacitive sensor;

the control module is electrically connected with the timing module and the heating module, and is used for determining the state information of the capacitive sensor according to the target charging duration and the preset duration range and controlling the heating module to be started or closed according to the state information.

2. The control circuit for an electronic cigarette of claim 1, wherein the heat generating module comprises:

the atomizing core support is connected with the glass fiber tube;

the non-woven fabric is arranged below the atomizing core support;

the heating wires are arranged between the non-woven fabrics and used for starting heating or stopping heating according to the control module.

3. The control circuit for an electronic cigarette of claim 1, wherein the control module comprises:

the control unit is electrically connected with the timing module and is used for comparing the target charging duration with the preset duration range to output a control signal;

the driving unit is electrically connected with the control unit and the heating module and is used for outputting a driving signal to the heating module according to the control signal so as to enable the heating module to be started or closed.

4. The control circuit for an electronic cigarette according to claim 3, wherein the driving unit comprises:

the second resistor is electrically connected with the control unit;

one end of the third resistor is connected with a power supply;

and the grid electrode of the MOS tube is connected with the other end of the second resistor, the source electrode of the MOS tube is connected with the power supply, and the drain electrode of the MOS tube is connected with the third resistor.

5. The control circuit for an electronic cigarette of claim 1, wherein the electronic cigarette further comprises: the voltage regulating assembly is arranged at the top of the shell and is used for presetting an output voltage value; the circuit further comprises:

and the adjusting module is electrically connected with the control module and is used for adjusting and determining the output power of the control module according to the output voltage value.

6. The control circuit for an electronic cigarette of claim 5, wherein the voltage regulating assembly comprises:

the pressure regulating knob is arranged at the top of the shell;

and the voltage regulating plate is used for regulating the output voltage value according to the rotating scale of the voltage regulating knob.

7. The control circuit for an electronic cigarette of claim 6, wherein the adjustment module comprises:

one end of the fourth resistor is connected with a power supply, and the other end of the fourth resistor is connected with the control module;

the adjustable end of the adjustable resistor is connected with the fourth resistor and the control module, is connected with the voltage regulating plate, and is used for regulating the output power of the control module according to the output voltage value of the voltage regulating plate, and one end of the adjustable resistor is connected with the control module.

8. The control circuit for an electronic cigarette of claim 1, further comprising a charging module, the charging module comprising:

a power interface;

the voltage stabilizing unit is electrically connected with the power interface and used for stabilizing a power signal input by the power interface;

and the charging unit is electrically connected with the voltage stabilizing unit and is used for supplying power to the control module by the power supply signal after voltage stabilization.

9. The control circuit for an electronic cigarette according to claim 8, wherein the charging unit comprises:

the first pin and the third pin of the charging chip are connected with the control module;

one end of the first capacitor is connected with the voltage stabilizing unit, and the other end of the first capacitor is grounded;

and one end of the fifth resistor is connected between the first capacitor and the ground, and the other end of the fifth resistor is connected with a fifth pin of the charging chip.

10. An electronic cigarette, the electronic cigarette comprising:

a control circuit for an electronic cigarette as claimed in any one of claims 1 to 9;

an electronic cigarette body.

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