CN110632133A - Detection circuit and detection method for use state of electronic cigarette equipment - Google Patents
Detection circuit and detection method for use state of electronic cigarette equipment Download PDFInfo
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- 239000003571 electronic cigarette Substances 0.000 title claims abstract description 97
- 238000001514 detection method Methods 0.000 title claims abstract description 61
- 238000005070 sampling Methods 0.000 claims abstract description 161
- 239000003990 capacitor Substances 0.000 claims abstract description 97
- 230000000391 smoking effect Effects 0.000 claims abstract description 29
- 238000000034 method Methods 0.000 claims abstract description 27
- 230000004044 response Effects 0.000 claims description 7
- 238000007599 discharging Methods 0.000 claims description 3
- 230000003071 parasitic effect Effects 0.000 description 10
- 238000010586 diagram Methods 0.000 description 7
- 238000004590 computer program Methods 0.000 description 4
- 235000019504 cigarettes Nutrition 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- SNICXCGAKADSCV-JTQLQIEISA-N (-)-Nicotine Chemical compound CN1CCC[C@H]1C1=CC=CN=C1 SNICXCGAKADSCV-JTQLQIEISA-N 0.000 description 1
- 238000000889 atomisation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229960002715 nicotine Drugs 0.000 description 1
- SNICXCGAKADSCV-UHFFFAOYSA-N nicotine Natural products CN1CCCC1C1=CC=CN=C1 SNICXCGAKADSCV-UHFFFAOYSA-N 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000035807 sensation Effects 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/22—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance
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Abstract
The embodiment of the invention discloses a detection circuit and a detection method for the use state of electronic cigarette equipment, wherein the detection circuit comprises: a reference capacitor and a sampling capacitor; the first clock module is connected with the reference capacitor and used for setting a first period value corresponding to the reference capacitor; the second clock module is connected with the sampling capacitor and is used for setting a second period value corresponding to the sampling capacitor; the sampling module is connected with the first clock module and the second clock module and is used for carrying out sampling operation according to the first cycle value in the high-level time period of the second cycle value; the counting module is connected with the first clock module and the sampling module and used for acquiring the initial sampling times within a preset time after the electronic cigarette equipment is started; and the processing module is connected with the sampling module and used for judging the state of the electronic cigarette equipment. In addition, the embodiment of the invention also discloses a method for detecting the use state of the electronic cigarette equipment. By adopting the method and the device, the accuracy of judging the smoking state of the electronic cigarette equipment can be improved.
Description
Technical Field
The invention relates to the field of electronic cigarette equipment, in particular to a detection circuit and a detection method for the use state of electronic cigarette equipment.
Background
The electronic cigarette equipment is an electronic product simulating cigarettes, and has the same appearance, smoke, taste and sensation as the cigarettes; it is a product which is absorbed by users after nicotine and the like are changed into steam by means of atomization and the like.
Generally, a detection circuit for detecting the use state of an electronic cigarette device is arranged in the electronic cigarette device, and the existing detection circuit judges whether the electronic cigarette device is in a smoking state or not by arranging a detection capacitor; specifically, the use state of the electronic cigarette is judged by judging the relation between the change of the detection capacitance and the set reference capacitance based on the change of the detection capacitance caused by the pressure change caused by inspiration in the smoking process; however, the parasitic capacitance exists in the detection circuit, and the capacitance value of the parasitic capacitance is difficult to measure, so that the judgment of the change value of the detection capacitance is not accurate enough, and the judgment of the use state of the electronic cigarette device has certain deviation.
Disclosure of Invention
In view of this, the present invention provides a detection circuit and a detection method for a use state of an electronic cigarette device, which are used to solve the problem in the prior art that a deviation exists in a use state judgment of the electronic cigarette device due to a capacitance change caused by a pressure change during a use process of the electronic cigarette device, which cannot be accurately determined.
The specific implementation scheme of the embodiment of the invention is as follows:
a use state detection circuit of an electronic vaping device, comprising:
one end of the reference capacitor is a grounding end;
one end of the sampling capacitor is a grounding end;
the first clock module is connected with the other end of the reference capacitor and used for setting a first period value corresponding to the reference capacitor;
the second clock module is connected with the other end of the sampling capacitor and used for setting a second period value corresponding to the sampling capacitor;
the sampling module is connected with the first clock module and the second clock module and is used for performing sampling operation according to the first cycle value in the high-level time period of the second cycle value and acquiring the corresponding target sampling times of the electronic cigarette device in the using process through the sampling operation;
the counting module is connected with the first clock module and the sampling module and used for acquiring the initial sampling times of the sampling module in a preset time after the electronic cigarette equipment is started based on the first period value;
and the processing module is connected with the sampling module and used for comparing the sum of the initial sampling times and a preset sampling time threshold with the target sampling times, and when the target sampling times are larger than or equal to the sum, the electronic cigarette equipment is judged to be in a smoking state.
Further, the reference capacitor is a fixed capacitor, and the sampling capacitor is a variable capacitor.
Further, the detection circuit further comprises a latch module, and the latch module is connected with the counting module and the processing module and is used for storing the initial sampling times and transmitting the initial sampling times to the processing module.
Further, the first clock module includes a first comparator and a second comparator having the same input level, and a flip-flop, wherein:
the output ends of the first comparator and the second comparator are connected with the input end of the trigger;
the first comparator outputs a first comparison result based on the input level, the second comparator outputs a second comparison result based on the input level, and the flip-flop outputs corresponding clock states based on the first and second comparison results, the clock states including a high level and a low level.
Furthermore, the first clock module further comprises a first current source, a second current source and a charging capacitor, one end of the charging capacitor is grounded, and the other end of the charging capacitor is respectively connected with the output ends of the first current source and the second current source;
the first current source is used for charging the charging capacitor, so that the input levels of the first comparator and the second comparator are high levels; the second current source is used for discharging the charging capacitor, so that the input levels of the first comparator and the second comparator are low levels.
Further, the circuit structure, the input current, and the input voltage of the first clock module are respectively the same as the circuit structure, the input current, and the input voltage of the second clock module.
Further, the second period value is much larger than the first period value.
Further, the processing module further includes a calculating unit, and the calculating unit calculates the sum according to the initial sampling times and the sampling times threshold.
Furthermore, the detection circuit further comprises a response module, which is connected with the output end of the processing module and used for reminding a user according to the using state of the electronic cigarette device.
A use state detection method of an electronic cigarette device comprises the following steps:
acquiring the initial sampling times of the electronic cigarette equipment within a preset time after the electronic cigarette equipment is started; and
acquiring the target sampling times of the electronic cigarette equipment in the smoking process;
calculating a sum of the initial sampling times and a preset sampling time threshold, and judging the sum and the target sampling times;
and when the target sampling times are larger than or equal to the sum value, determining that the electronic cigarette equipment is in a smoking state.
The embodiment of the invention has the following beneficial effects:
after the detection circuit and the detection method for the use state of the electronic cigarette device are adopted, a first period value corresponding to the reference capacitor is set through the first clock module, and a second period value corresponding to the sampling capacitor is set through the second clock module, wherein the second period value is far larger than the first period value; sampling operation is carried out on the high-level section of the second period value through a sampling module by taking the first period value as a sampling period, and corresponding target sampling times in the using process of the electronic cigarette device are obtained; meanwhile, acquiring initial sampling times with a first period value as a sampling period in a preset time period after the electronic cigarette device is started through a counting module, adding the initial sampling times with a preset sampling time threshold value to obtain a sum value, comparing the sum value with a target sampling time, and if the target sampling time is greater than or equal to the sum value, judging that the electronic cigarette device is in a smoking state; the embodiment can eliminate the judgment influence of the parasitic capacitance in the detection circuit on the use state of the electronic cigarette device, and improve the judgment accuracy of the use state of the electronic cigarette device.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Wherein:
fig. 1 is a schematic structural diagram of a detection circuit of a use state of the electronic cigarette device in one embodiment;
FIG. 2 is a schematic diagram of a sampling implementation of the sampling module in one embodiment;
fig. 3 is a schematic structural diagram of a detection circuit for a use state of the electronic cigarette device in another embodiment;
FIG. 4 is a diagram illustrating a structure of the first clock module according to an embodiment;
fig. 5 is a schematic circuit structure diagram of a detection circuit of the use state of the electronic cigarette device in one embodiment;
fig. 6 is a schematic flow chart illustrating a method for detecting a usage status of the electronic smoking device according to an embodiment;
fig. 7 is a schematic diagram of an internal structure of a computer device for executing the method for detecting the use state of the electronic cigarette device in one embodiment.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order to solve the problem that the judgment result is affected by parasitic capacitance in the process of judging the use state of the electronic cigarette device in the prior art, in the embodiment, a detection circuit for the use state of the electronic cigarette device is particularly provided; the detection circuit judges the use state by detecting the relative change value of the detection capacitor when the electronic cigarette device is smoked or not smoked, so that the influence of the parasitic capacitor on the judgment result can be avoided, and the judgment accuracy is improved.
As shown in fig. 1, the present embodiment provides a usage state detection circuit of an electronic cigarette device, where the detection circuit 100 includes: the circuit comprises a reference capacitor 101, a sampling capacitor 102, a first clock module 103, a second clock module 104, a sampling module 105, a counting module 106, a processing module 107 and a latch module 108; one end of the reference capacitor 101 is a ground end, the other end of the reference capacitor is connected to the first clock module 103, and the first clock module 103 is configured to set a first period value corresponding to the reference capacitor 101; one end of the sampling capacitor 102 is also a ground end, and the other end is connected to the second clock module 104, and the second clock module 104 is configured to set a second period value corresponding to the sampling capacitor 102; the sampling module 105 is connected to the first clock module 103 and the second clock module 104. In a specific embodiment, the sampling module 105 performs a sampling operation based on the first period value and the second period value, specifically performs the sampling operation with the first period value as a sampling period within a high level time period of the second period value, so as to obtain a target sampling number corresponding to the electronic cigarette device in the using process through the sampling operation; as shown in fig. 2, in a high level period of the sampling capacitor 102 corresponding to the second period value, the rising edges corresponding to the first period values of the reference capacitors 101 are collected. For example, assuming that the first period value is 2ms and the second period value is 100ms, it can be known that 25 sampling operations can be performed in the high period of the sampling capacitor 102.
In a specific embodiment, the counting module 106 is connected to the first clock module 103, the collecting module 105, and the latching module 108, wherein the counting module 106 is configured to obtain a sampling frequency that takes a first period value as a period within a predetermined time period after the electronic cigarette device is started, record the sampling frequency as an initial sampling frequency, and transmit the initial sampling frequency to the latching module 108 for storage after sampling; the processing module 107 is connected to the sampling module 105 and the latch module 108, specifically, after the target sampling frequency is obtained by the sampling module 105, the target sampling frequency is transmitted to the processing module, meanwhile, the latch module 108 transmits the stored initial sampling frequency to the processing module 107, the processing module 107 adds the initial sampling frequency to a preset sampling frequency threshold to obtain a corresponding sum, compares the sum with the target sampling frequency, and determines that the electronic cigarette device is in a smoking state when the target sampling frequency is greater than or equal to the sum.
Specifically, the reference capacitor 101 is a fixed-value capacitor, that is, the capacitance of the reference capacitor 101 is preset, the sampling capacitor 102 is a variable capacitor, and based on the variation characteristics of the pressure and the capacitance, specifically, the larger the suction force in the smoking process of the electronic cigarette device is, the larger the capacitance value of the sampling capacitor 102 is; in addition, in order to implement the sampling, in this embodiment, the second period value corresponding to the sampling capacitor 102 is much larger than the first period value corresponding to the reference capacitor 101, so as to ensure that the electronic cigarette device can perform sufficient sampling operations during the use process, that is, it is ensured that the number of times of sampling corresponds to the capacitance change of the sampling capacitor 102, and further, the specific use state of the electronic cigarette device is determined by the capacitance change of the sampling capacitor 102.
In one embodiment, the processing module 107 is further provided with a calculating unit, specifically, the calculating unit calculates a sum of the initial sampling frequency and a preset sampling frequency threshold, and the processing module 107 compares the sum with a target sampling frequency to determine the usage state of the electronic cigarette device.
In one embodiment, as shown in fig. 3, the detection circuit for the use state of the electronic cigarette device of this embodiment is further provided with a response module 109, the specific response module 109 is connected with the output end of the processing module 107, and the response module 109 is configured to remind the user according to the specific use state of the electronic cigarette device; specifically, the user is prompted according to the determination result of the processing module 107. For example, the response module 109 may be implemented by indicating (sound, light tube), by displaying on a screen, etc., and if the processing module 107 determines that the usage status of the electronic device is smoking status, red may be displayed by, for example, an LED lamp, and if the processing module 107 determines that the usage status of the electronic device is not smoking status, green may be displayed by, for example, an LED lamp; or directly through, for example, an LED display screen, through words, the specific smoking state is displayed, and the like.
The specific use state of the electronic cigarette device can be judged more intuitively and easily through the response module 109.
In this embodiment, as shown in fig. 4, the first clock module 103 includes a first comparator and a second comparator with the same input level, a flip-flop, a first current source, a second current source, and a charging capacitor; wherein the first comparator outputs a first comparison result based on the input level, and the second comparator outputs a second comparison result based on the input level; the output ends of the first comparator and the second comparator are connected with the input end of the trigger, and the trigger outputs corresponding clock states based on the first comparison result and the second comparison result, wherein the clock states comprise a high level and a low level. Specifically, one end of the charging capacitor is grounded, and the other end of the charging capacitor is respectively connected with the output ends of the first current source and the second current source; the first current source is used for charging the charging capacitor so that the input levels of the first comparator and the second comparator are high levels; the second current source is used for discharging the charging capacitor so that the input levels of the first comparator and the second comparator are low; it should be noted that the first clock module 103 generates the required clock through the existing clock generating circuit, and the detailed generating principle thereof is not described herein again.
In a specific embodiment, the circuit structure, the input current, and the input voltage of the second clock module 104 are respectively the same as the circuit structure, the input current, and the input voltage of the first clock module 103, so as to reduce the influence of the change of other parameters on the determination of the detection capacitor C1 on the usage state of the electronic cigarette device, and ensure the accuracy of the determination.
In this embodiment, a first period value corresponding to the reference capacitor 101 is set by the first clock module 103, and a second period value corresponding to the sampling capacitor 102 is set by the second clock module 104, wherein the second period value is set to be much larger than the first period value, so that the sampling operation is performed in a high-level time period of the second period value with the first period value as a period, and the determination operation on the use state of the electronic cigarette device is performed according to the sampling result. In addition, in this embodiment, by setting the first clock module 103 and the second clock module 104 having the same circuit structure and generating the first period value and the second period value corresponding to the reference capacitor 101 and the sampling capacitor 102 respectively with the same current and voltage, the influence of other factors except the reference capacitor 101 and the sampling capacitor 102 in the sampling process can be avoided, the change of the use state of the electronic cigarette device can be accurately reflected only by the change of the sampling capacitor 102 in the use process of the electronic cigarette device, the accuracy of the use state detection of the electronic cigarette device is ensured, that is, the detection accuracy of the whole detection circuit is ensured.
In an embodiment, as shown in fig. 5, the usage state detection circuit corresponding to the electronic cigarette device described above, wherein the reference capacitor 101 is a capacitor C0, the sampling capacitor 102 is a capacitor C1, the first clock module 103 is a clock0, the second clock module 104 is a clock1, the sampling module 105 is implemented by a sampling circuit, the counting module is a counter with a precision of ms, the latching module is a latching module, and the processing module is an MCU processor; the specific clock0 and clock1 are implemented by a clock circuit as shown in fig. 4, and the sampling circuit, the counter, the latch circuit, and the MCU processor are implemented by sampling the existing technology, which is not described herein again.
Based on that the circuit structure, the input current, and the input voltage of the second clock module 104 are respectively the same as the circuit structure, the input current, and the input voltage of the first clock module 103, the first period value corresponding to the first clock module 103 is obtained as follows:
T0＝2×C0×(Vh-Vl)/I0
the second period value corresponding to the second clock module 104 is:
T1＝2×C1×(Vh-Vl)/I0
only the capacitors C0 and C1 are different, so that when clock1 is sampled by clock0, the relation between C0 and C1 can be accurately judged, the capacitors are not judged accurately due to the fact that other parameters are changed, and the accuracy of capacitor detection is guaranteed.
In the usage state detection circuit of the electronic cigarette device shown in fig. 5, N represents a target sampling number of times in a smoking state of the electronic cigarette device, and N0 represents an initial sampling number of times obtained within a preset time after the electronic cigarette device is started, wherein when the sampling module finishes sampling within the preset time, if the counting module is a counter, Q is 1 sent to the latch module, and the latch module stores the sampling number N0; m represents a preset sampling number threshold.
Based on the above specific embodiment of the usage state detection circuit for the electronic cigarette device, the detection circuit of this embodiment does not simply detect the absolute value of the capacitor C1 (i.e., the sampling capacitor 102) and then directly determine the usage state of the electronic cigarette device through the sampling circuit (the sampling module 105), but determines the usage state by detecting the relative change value of the capacitor C1 when the electronic cigarette device is smoking and when the electronic cigarette device is not smoking. Specifically, in this embodiment, after the electronic cigarette device is powered on or loaded, the detection circuit automatically detects the capacitance value of the sampling capacitor, including the detection capacitor C1 and the parasitic capacitor used for sampling, assuming that the parasitic capacitor is Cx, assuming that the sum of the capacitance of the capacitor C1 and the parasitic capacitor Cx is C1i when no smoking occurs, and meanwhile, setting the variation value of the detection capacitor C1 of the electronic cigarette device in the smoking state as C1 x; wherein, in the actual smoking process, to the sampling number threshold value M that sets for, the value definition of M is:
M＝(C1x0/C0)/2
wherein C1x0 is a preset capacitance threshold, when C1x > C1x0, it indicates that the electronic cigarette is in a smoking state, the value of C1x0 is related to the device characteristics of the sampling capacitor C1, and the value of C1x0 is different for different types of sampling capacitor C1 devices. At this time, as can be seen from the above description of the period of the capacitor in the clock circuit, the value of the period of the capacitor C1 is:
T1＝2×C1×(Vh-Vl)/I0＝2×(C1i+C1x)×(Vh-Vl)/I0＝T1i+T1x，
wherein, T1x ═ 2 × C1x × (Vh-Vl)/I0, T1I ═ 2 × C1I × (Vh-Vl)/I0, and T0 ═ 2 × C0 × (Vh-Vl)/I0, according to the way that the sampling module 105 samples the high level segment of the first period value of the reference capacitor 101 in one period of the sampling capacitor 102, thereby obtaining:
T1i＝2×N0×T0
if the capacitance change value C1x >2 × M × C0 is set during the use of the electronic cigarette device, that is, if it is determined that the electronic cigarette device is in the smoking state, when C1x is 2 × M × C0,
T1x＝2×C1x×(Vh-Vl)/I0＝2×2×M×C0×(Vh-Vl)/I0＝2×M×T0
at this point:
T1＝T1i+T1x＝2×N0×T0+2×M×T0＝2×(N0+M)×T0
it can be found that the number obtained by sampling the high level of clock1 with clock0 during smoking is more than M + N0; therefore, during each power-on or load-adding process, the capacitor C1 is sampled to obtain an initial sampling frequency, that is, the sampling number N0 of Y ms after the power-on or load-adding process is latched into the latch module 108, and as long as the processing module 107 detects that the target sampling frequency meets the condition N > N0+ M, it can be determined that the electronic cigarette device has a smoking action, and the capacitance change value of the corresponding capacitor C1 is:
C1x>2×M×C0。
the electronic cigarette use state detection circuit of this embodiment can avoid causing the state judgement mistake to electronic cigarette equipment because of parasitic capacitance, promotes accuracy and reliability of judging the use state of electronic cigarette equipment.
In this embodiment, a first period value corresponding to the reference capacitor is set by the first clock module 103, and a second period value corresponding to the sampling capacitor is set by the second clock module 104, where the second period value is much larger than the first period value; sampling operation is carried out on the high-level section of the second period value through a sampling module by taking the first period value as a sampling period, and corresponding target sampling times in the using process of the electronic cigarette device are obtained; meanwhile, acquiring initial sampling times with a first period value as a sampling period in a preset time period after the electronic cigarette device is started through a counting module, adding the initial sampling times with a preset sampling time threshold value to obtain a sum value, comparing the sum value with a target sampling time, and if the target sampling time is greater than or equal to the sum value, judging that the electronic cigarette device is in a smoking state; the embodiment can eliminate the judgment influence of the parasitic capacitance in the detection circuit on the use state of the electronic cigarette device, and improve the judgment accuracy of the use state of the electronic cigarette device.
Based on the same inventive concept, as shown in fig. 6, the present embodiment further provides a method for detecting a use state of an electronic cigarette device, including steps S102 to S108:
step S102: acquiring the initial sampling times of the electronic cigarette equipment within a preset time after the electronic cigarette equipment is started;
step S104: acquiring the target sampling times of the electronic cigarette equipment in the smoking process;
step S106: calculating a sum of the initial sampling times and a preset sampling time threshold, and judging the sum and the target sampling times;
step S108: and when the target sampling times are larger than or equal to the sum value, determining that the electronic cigarette equipment is in a smoking state.
The implementation principle of the usage state detection method of the electronic cigarette device in this embodiment is consistent with that of the usage state detection circuit of the electronic cigarette device, and the specific implementation process thereof may refer to the above contents, which is not described herein again.
In one embodiment, the usage state detection method of the electronic cigarette device provided by the present application may be implemented in the form of a computer program, and the computer program may be run on a computer device as shown in fig. 7. The computer device may specifically be a server or a terminal.
As shown in fig. 7, the computer device includes a processor, a memory, and a network interface connected by a system bus. Wherein the memory includes a non-volatile storage medium and an internal memory. The non-volatile storage medium of the computer device stores an operating system and may also store a computer program which, when executed by the processor, causes the processor to implement a method of detecting a use status of the electronic vaping device. The internal memory may also have a computer program stored therein, which, when executed by the processor, causes the processor to perform a method of detecting a use status of the electronic vaping device. Those skilled in the art will appreciate that the architecture shown in fig. 7 is merely a block diagram of some of the structures associated with the disclosed aspects and is not intended to limit the computing devices to which the disclosed aspects apply, as a particular computing device may include more or less components than those shown in fig. 7, or may combine certain components, or have a different arrangement of components.
Any reference to memory, storage, database, or other medium used in the embodiments provided herein may include non-volatile and/or volatile memory, among others. Non-volatile memory can include read-only memory (ROM), Programmable ROM (PROM), Electrically Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (DDRSDRAM), Enhanced SDRAM (ESDRAM), Synchronous Link DRAM (SLDRAM), Rambus Direct RAM (RDRAM), direct bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention, and it is therefore to be understood that the invention is not limited by the scope of the appended claims.
Claims (10)
1. A usage state detection circuit of an electronic cigarette device, comprising:
one end of the reference capacitor is a grounding end;
one end of the sampling capacitor is a grounding end;
the first clock module is connected with the other end of the reference capacitor and used for setting a first period value corresponding to the reference capacitor;
the second clock module is connected with the other end of the sampling capacitor and used for setting a second period value corresponding to the sampling capacitor;
the sampling module is connected with the first clock module and the second clock module and is used for performing sampling operation according to the first cycle value in the high-level time period of the second cycle value and acquiring the corresponding target sampling times of the electronic cigarette device in the using process through the sampling operation;
the counting module is connected with the first clock module and the sampling module and used for acquiring the initial sampling times of the sampling module in a preset time after the electronic cigarette equipment is started based on the first period value;
and the processing module is connected with the sampling module and used for comparing the sum of the initial sampling times and a preset sampling time threshold with the target sampling times, and when the target sampling times are larger than or equal to the sum, the electronic cigarette equipment is judged to be in a smoking state.
2. The use state detection circuit of the electronic vaping device according to claim 1, wherein the reference capacitance is a fixed capacitance, and the sampling capacitance is a variable capacitance.
3. The usage status detection circuit of an electronic vaping device of claim 2, further comprising a latch module connected to the counting module and the processing module for saving the initial sampling number and transmitting the initial sampling number to the processing module.
4. The usage state detection circuit of the electronic vaping device according to claim 1, wherein the first clock module includes first and second comparators having the same input level, and a flip-flop, wherein:
the output ends of the first comparator and the second comparator are connected with the input end of the trigger;
the first comparator outputs a first comparison result based on the input level, the second comparator outputs a second comparison result based on the input level, and the flip-flop outputs corresponding clock states based on the first and second comparison results, the clock states including a high level and a low level.
5. The use state detection circuit of the electronic cigarette device according to claim 4, wherein the first clock module further comprises a first current source, a second current source and a charging capacitor, one end of the charging capacitor is grounded, and the other end of the charging capacitor is connected to the output ends of the first current source and the second current source respectively;
the first current source is used for charging the charging capacitor, so that the input levels of the first comparator and the second comparator are high levels; the second current source is used for discharging the charging capacitor, so that the input levels of the first comparator and the second comparator are low levels.
6. The use state detection circuit of the electronic cigarette device according to claim 5, wherein a circuit configuration, an input current, and an input voltage of the first clock module are the same as a circuit configuration, an input current, and an input voltage of the second clock module, respectively.
7. The use state detection circuit of the electronic vaping device of claim 5, wherein the second period value is substantially greater than the first period value.
8. The usage state detection circuit of the electronic vaping device of claim 1, further comprising a calculation unit in the processing module, the calculation unit being configured to calculate the sum of the initial sampling number and the preset sampling number threshold.
9. The usage state detection circuit of the electronic vaping device of any one of claims 1 to 8, wherein the detection circuit further comprises a response module connected to the output of the processing module for alerting a user based on the usage state of the electronic vaping device.
10. A method for detecting the use state of electronic cigarette equipment is characterized by comprising the following steps:
acquiring the initial sampling times of the electronic cigarette equipment within a preset time after the electronic cigarette equipment is started; and
acquiring the target sampling times of the electronic cigarette equipment in the smoking process;
calculating a sum of the initial sampling times and a preset sampling time threshold, and judging the sum and the target sampling times;
and when the target sampling times are larger than or equal to the sum value, determining that the electronic cigarette equipment is in a smoking state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910925449.1A CN110632133B (en) | 2019-09-27 | 2019-09-27 | Detection circuit and detection method for use state of electronic cigarette equipment |
Applications Claiming Priority (1)
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| CN112947142A (en) * | 2021-01-26 | 2021-06-11 | 深圳市泛海数据科技有限公司 | Automatic smoke detection control circuit and method based on digital time sequence control |
| CN113729310A (en) * | 2021-09-15 | 2021-12-03 | 苏州敏芯微电子技术股份有限公司 | Control method of electronic cigarette, electronic cigarette sensing chip and electronic cigarette |
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