CN110652045B - Power adjustment method of electronic cigarette - Google Patents
Power adjustment method of electronic cigarette Download PDFInfo
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- CN110652045B CN110652045B CN201911000251.9A CN201911000251A CN110652045B CN 110652045 B CN110652045 B CN 110652045B CN 201911000251 A CN201911000251 A CN 201911000251A CN 110652045 B CN110652045 B CN 110652045B
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Abstract
The invention relates to the technical field of electronic cigarettes, in particular to a power adjusting method of an electronic cigarette.A controller collects the resistance voltage of a heater and the real-time voltage of a power supply part in real time when the heater is used, and then generates a thermometer by combining the real-time temperature of the heater detected by a temperature detection part, and stores data in a memory, so that the resistance voltage data of the heater can be quickly called from the thermometer according to the temperature detected by the current temperature detection part in the subsequent use process, the calculation time is saved, the efficiency is improved, and then the purpose of keeping the power of the heater constant is achieved by adjusting the heating time of the heater, thereby ensuring the consistent taste of a user in the process of using the electronic cigarette. The power adjusting method of the electronic cigarette provided by the invention has the advantages of simple structure, low cost, rapidness and flexibility in controlling the smoke taste and the mouthfeel of the electronic cigarette to be unchanged.
Description
Technical Field
The invention relates to the technical field of electronic cigarettes, in particular to a power adjusting method of an electronic cigarette.
Background
The electronic cigarette is an electronic product simulating a cigarette, and has the same appearance, smoke, taste and sensation as the cigarette. 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. Related researches consider that the harm of the electronic cigarette is smaller than that of the traditional cigarette, so that the electronic cigarette is popular in foreign countries in early years and is favored by young people in China only in recent years.
However, the research and development of domestic electronic cigarettes is low at present, most of electronic cigarettes on the market are of common structures, tobacco tar is atomized through an atomizer, and the function is single. However, as the number of people using the electronic cigarette increases, the requirement of the user for the electronic cigarette becomes higher, for example, to keep the taste consistent in the process of using the electronic cigarette, the electronic cigarette needs to stably control the heating power so as to keep the taste unchanged in the process of using the electronic cigarette, and thus, an electronic cigarette product capable of stably controlling the heating power is needed at present, and the requirement of the user for the taste in the process of using the electronic cigarette is met.
Disclosure of Invention
The invention provides a power adjusting method of an electronic cigarette aiming at the problems in the prior art, which can keep the heating power constant, thereby ensuring the consistent mouthfeel of a user in the using process.
In order to solve the technical problems, the invention adopts the following technical scheme: a power adjustment method of an electronic cigarette, the electronic cigarette comprises a controller and a heater, the controller is in signal connection with a temperature detection part for detecting temperature, a power supply part for providing voltage for the controller and a memory for storing use information of the electronic cigarette, the controller is electrically connected with the heater, and the power adjustment method comprises the following steps:
A. the controller collects the voltage of the heater and the real-time voltage of the power supply part in real time, and respectively calculates the real-time resistance R (i) of the heater and the real-time voltage Vbat of the power supply part according to the collected voltages, wherein i is the frequency of collecting the voltage of the heater, and the temperature detection part detects the temperature temp (i) of the heater in real time;
B. generating a temperature table (i) ([ r (i),) according to the real-time resistance r (i) and the real-time temperature temp (i) of the heater;
C. when the electronic cigarette is used, the temperature detection part detects the temperature of the heater in real time, the controller collects the voltage Vbat of the power supply part and the temperature detection data of the temperature detection part for many times, and then the resistance R of the current heater is obtained through calculation according to the temperature table (i);
D. setting the power of the heater as P, the heating driving signal of the heater as PWM driving signal, and the duty ratio of the PWM driving signal is D ═ PWMon/T, where PWMon is the heating time of the heater, T is the period of the PWM driving signal, and the voltage U ═ V on the heaterbatD, the power P of the heater is U2/R＝(Vbat*D)2Heating time/R
E. The real-time voltage Vbat of the power supply part and the real-time resistance R of the heater are changed according to time, and the constant heater power P is obtained by adjusting the heating time PWMon.
Preferably, in the step E, the heating time PWMon is adjusted according to the number of heating times, and the steps are as follows:
a1. setting the total heating times of the heater as M, recording the current heating times by the controller every time the heater heats once, and simultaneously storing the times k recorded by the controller when the heater heats for the kth timeSetting a trimming power delta on a memory1(k)＝K1*k/M，K1Is a calibration factor;
b1. make the heating time longer
By fine tuning the power delta1(k) To obtain a more precise heating time PWMon, thus keeping the power P of the heater constant.
Preferably, in the step E, the heating time PWMon is adjusted according to the speed of the heating material at the time of the kth heating, and the step includes:
a2. setting the weight of the heating material as M, the contact area of the heating material and the heater as S, and g as gravity acceleration, wherein the weight of the heating material when the heater heats for the k time is M (k) ═ M (M-k)/M, and M is the total heating times of the heater;
b2. the resultant force of the heating material on the heater surface is F (k) ═ g × m (k) — F1，F1The supporting force of the heater to the heating material is provided;
c2. setting the speed of the heating material as ve (k), the heating time as t and the acceleration as a, the resultant force F (k) m (k) V of the heating material on the surface of the heatere(k) T, then Ve(k) Setting a fine tuning power δ (f (k) × t/m (k))2(k)＝K2*Ve(k) In which K is2Is a calibration factor;
d2. adjusting power according to the speed of heating material for the kth time to output heating time
Thereby keeping the power P of the heater constant by adjusting the heating time PWMon.
Preferably, in the step E, the heating time PWMon is adjusted according to the speed of the heating material at the time of the kth heating, and the step includes:
a2. setting the weight of the heating material as M, the contact area of the heating material and the heater as S, and g as gravity acceleration, wherein the weight of the heating material when the heater heats for the k time is M (k) ═ M (M-k)/M, and M is the total heating times of the heater;
b2. the resultant force of the heating material on the heater surface is F (k) ═ g × m (k) — F1，F1The supporting force of the heater to the heating material is provided;
c2. setting the speed of the heating material as ve (k), the heating time as t and the acceleration as a, the resultant force F (k) m (k) V of the heating material on the surface of the heatere(k) T, then Ve(k) Setting a fine tuning power δ (f (k) × t/m (k))2(k)＝K2*Ve(k) In which K is2Is a calibration factor;
d2. combined with fine tuning of power delta1(k) And fine tuning the power delta2(k) Calculating the combined fine tuning power delta6(k)＝K6(δ1(k)+δ2(k) K6 is a calibration factor obtained from a large number of experimental data to output a heating time
Thereby keeping the power P of the heater constant by adjusting the heating time PWMon.
Preferably, in step E, the power is adjusted according to the pressure on the heater surface during the k-th heating, and the step includes:
a3. setting the weight of the heating material as M, the contact area of the heating material and the heater as S, and g as gravity acceleration, wherein the weight of the heating material when the heater heats for the k time is M (k) ═ M (M-k)/M, and M is the total heating times of the heater;
b3. the resultant force of the heating material on the heater surface is F (k) ═ g × m (k) — F1，F1The supporting force of the heater to the heating material is provided;
c3. pressure of heater surface is Pr(k) F (k)/S, and the fine tuning power is set to δ3(k)＝K3*Pr(k) In which K is3Is a calibration factor;
d3. adjusting power according to the pressure of the heater surface during the kth heating to output heating time
Thereby keeping the power P of the heater constant by adjusting the heating time PWMon.
Preferably, in step E, the power is adjusted according to the pressure on the heater surface during the k-th heating, and the step includes:
a3. setting the weight of the heating material as M, the contact area of the heating material and the heater as S, and g as gravity acceleration, wherein the weight of the heating material when the heater heats for the k time is M (k) ═ M (M-k)/M, and M is the total heating times of the heater;
b3. the resultant force of the heating material on the heater surface is F (k) ═ g × m (k) — F1，F1The supporting force of the heater to the heating material is provided;
c3. pressure of heater surface is Pr(k) F (k)/S, and the fine tuning power is set to δ3(k)＝K3*Pr(k) In which K is3Is a calibration factor;
d3. combined with fine tuning of power delta1(k) And fine tuning the power delta3(k) Calculating the combined fine tuning power delta7(k)＝K7(δ1(k)+δ3(k) K7 is a calibration factor obtained from a large number of experimental data to output a heating time
Thereby keeping the power P of the heater constant by adjusting the heating time PWMon.
Preferably, the adjusting of the heating time PWMon further includes:
e2. pressure of heater surface is Pr(k) F (k)/S, and the fine tuning power is set to δ3(k)＝K3*Pr(k) In which K is3Is a calibration factor;
f2. combined with fine tuning of power delta2(k) And fine tuning the power delta3(k) Calculating the combined fine tuning power delta8(k)＝K8(δ2(k)+δ3(k) K8 is a calibration factor obtained from a large number of experimental data to output a heating time
Thereby keeping the power P of the heater constant by adjusting the heating time PWMon.
Preferably, in the step a, the controller is further connected with a plurality of air pressure detecting elements in a signal manner, the plurality of air pressure detecting elements are used for detecting air pressure or air pressure difference or equivalent air pressure in a smoke channel of the electronic cigarette, the air pressure or air pressure difference or equivalent air pressure is set to be P1, and P1 is used for adjusting the heating time PWMon.
Preferably, the method for regulating the heating time PWMon by P1 is as follows:
a4. when P1 is more than or equal to P1max, P1max is the set maximum value of air pressure, and the heater is heated at full speed, i.e. heating time
b4. When P1<At P1max, the fine tuning power delta is set4(k)＝K4P1, wherein K4To calibrate the coefficients, the
Therefore, when the heater is heated for the kth time, the heating time PWMon is adjusted according to the air pressure or the air pressure difference or the equivalent air pressure in the smoke channel, and the effect of keeping the power P of the heater constant is achieved.
Preferably, the method for regulating the heating time PWMon by P1 is as follows:
a5. when P1 is more than or equal to P1max, P1max is the set maximum value of air pressure, and the heater is heated at full speed, i.e. heating time
b5. When P1<At P1max, the fine tuning time is set to delta5(k)＝K5P1, wherein K5To calibrate the coefficients, then
Therefore, when the electronic cigarette is heated for the kth time, the heating time PWMon is adjusted according to the time of inhaling when the user uses the electronic cigarette for the kth time, and the effect of keeping the power P of the heater constant is achieved.
The invention has the beneficial effects that:
according to the power adjusting method of the electronic cigarette, provided by the invention, when the heater is used, the controller collects the resistance voltage of the heater and the real-time voltage of the power supply part in real time, and then combines the real-time temperature of the heater detected by the temperature detection part to generate the thermometer, and data is stored in the memory, so that the resistance voltage data of the heater can be quickly called from the thermometer according to the temperature detected by the current temperature detection part in the subsequent use process, the calculation time is saved, the efficiency is improved, and then the purpose of keeping the power of the heater constant is achieved by adjusting the heating time of the heater, so that the consistency of the mouth feel of a user in the process of using the electronic cigarette is ensured. The power adjusting method of the electronic cigarette realizes the effects of simple structure, low cost, rapidness and flexibility in controlling the smoke taste and the mouthfeel of the electronic cigarette to be unchanged.
Drawings
FIG. 1 is a signal flow diagram of the present invention.
FIG. 2 is a flowchart of thermometer generation according to the present invention.
Fig. 3 is a flow chart of the regulation of the constant power P of the heater of the present invention.
FIG. 4 shows the constant power P of the heater according to the invention as a function of the trimming power delta1(k) The adjustment flowchart of (1).
FIG. 5 shows the constant power P of the heater according to the invention as a function of the trimming power delta2(k) The adjustment flowchart of (1).
FIG. 6 shows the constant power P of the heater according to the invention as a function of the trimming power delta3(k) The adjustment flowchart of (1).
FIG. 7 shows the constant power P of the heater according to the invention as a function of the trimming power delta4(k) The adjustment flowchart of (1).
FIG. 8 shows the constant power P of the heater according to the invention as a function of the trimming time delta5(k) The adjustment flowchart of (1).
The reference numerals in fig. 1 to 8 include:
the device comprises a controller, a heater, a temperature detection part, a power supply part, a memory, a Bluetooth module and a WIFI module, wherein the controller is 1, the heater is 2, the temperature detection part is 3, the power supply part is 4, the memory is 5, the Bluetooth module is 7, and the WIFI module is 8.
Detailed Description
In order to facilitate understanding of those skilled in the art, the present invention will be further described with reference to the following examples and drawings, which are not intended to limit the present invention. The present invention is described in detail below with reference to the attached drawings.
The power adjustment method for an electronic cigarette provided in this embodiment, as shown in fig. 1, fig. 2, and fig. 3, includes the following steps:
A. the controller 1 collects the voltage of the heater 2 and the real-time voltage of the power supply part 4 in real time, respectively calculates the real-time resistance R (i) of the heater 2 and the real-time voltage Vbat of the power supply part 4 according to the collected voltages, and simultaneously the temperature detecting part 3 detects the temperature temp (i) of the heater 2 in real time;
B. generating a temperature table (i) ([ r (i) ]) according to the real-time resistance r (i) and the real-time temperature temp (i) of the heater 2;
C. when the electronic cigarette is used, the temperature detection part 3 detects the temperature of the heater 2 in real time, the controller 1 collects the voltage Vbat of the power supply part 4 and the temperature detection data of the temperature detection part 3 for many times, and then the resistance R of the heater 2 is calculated and obtained according to the temperature table (i);
D. let the power of the heater 2 be P, the heating driving signal of the heater 2 be a PWM driving signal, and the duty ratio thereof be D ═ PWMon/T, where PWMon is the heating time of the heater 2, T is the period of the PWM driving signal, and the voltage U ═ V across the heater 2batD, the power P of the heater 2 is U2/R＝(Vbat*D)2Heating time/R
E. The real-time voltage Vbat of the power supply unit 4 and the real-time resistance R of the heater 2 are varied according to time, and the constant power P of the heater 2 is obtained by adjusting the heating time PWMon.
Preferably, the temperature detection element 3 in this embodiment includes a temperature sensor and an infrared electronic thermometer, and the temperature sensor is used for acquiring the temperature of the controller 1, so as to perform temperature control, over-temperature protection and open-circuit short-circuit protection of the controller 1; the infrared electronic thermometer is used for detecting the heating temperature of the heater 2; the power supply unit 4 is a battery but is not limited to a battery.
Specifically, when the heater 2 is in use, the controller 1 collects the voltage of the heater 2 and the real-time voltage of the power supply element 4 in real time, calculates and obtains the real-time resistance r (i) of the heater 2 and the real-time voltage Vbat of the power supply element 4, and generates a temperature table (i) [ (r), (i) ], temp (i) ] in combination with the real-time temperature temp (i) of the heater 2 detected by the temperature detection element 3]And the data is stored in the memory 5, so that the resistance voltage data of the heater 2 can be called from the temperature table (i) quickly according to the temperature detected by the current temperature detecting element 3 in the subsequent use process, the calculation time is saved, and the efficiency is improved; according to the power P of the heater 2-U2/R＝(Vbat*D)2the/R and the formula D ═ PWMon/T, it can be seen that, in the case where the voltage Vbat and the resistance R change in real time, the power P needs to be kept constant, the purpose of keeping the power of the heater 2 constant can be achieved by adjusting the heating time PWMon, thereby ensuring that the user feels consistent in the process of using the electronic cigarette. The power adjusting method of the electronic cigarette realizes the effects of simple structure, low cost, rapidness and flexibility in controlling the smoke taste and the mouthfeel of the electronic cigarette to be unchanged.
In the power adjustment method for an electronic cigarette provided in this embodiment, as shown in fig. 4, in step E, the heating time PWMon is adjusted according to the heating times, and the steps are as follows:
a1. setting the total heating times of the heater 2 as M, recording the current heating times by the controller 1 every time the heater 2 heats, storing the recorded times k by the controller 1 in the memory 5 when the heater 2 heats for the k time, and setting the fine tuning power delta1(k)＝K1*k/M，K1Is a calibration factor;
b1. make the heating time longer
By fine tuning the power delta1(k) To obtain more accurateThe heating time PWMon, thus keeping the power P of the heater 2 constant.
In particular by trimming the power delta1(k)＝K1k/M adjusts and calibrates the heating time, so that the heating time PWMon is more accurate, and the constancy of the power P is effectively ensured.
In the power adjustment method for an electronic cigarette provided in this embodiment, as shown in fig. 5, in step E, the heating time PWMon is adjusted according to the speed of the heating material during the k-th heating, and the steps include:
a2. assuming that the weight of the heating material is M, the contact area between the heating material and the heater 2 is S, and g is the gravity acceleration, the weight of the heating material when the heater 2 heats k times is M (k) ═ M (M-k)/M, where M is the total heating times of the heater 2;
b2. the resultant force of the heating material on the surface of the heater 2 is F (k) ═ g × m (k) — F1，F1The supporting force of the heater 2 to the heating material;
c2. setting the speed of the heating material as ve (k), the heating time as t and the acceleration as a, the resultant force F (k) m (k) V of the heating material on the surface of the heatere(k) T, then Ve(k) Setting a fine tuning power δ (f (k) × t/m (k))2(k)＝K2*Ve(k) In which K is2Is a calibration factor;
d2. adjusting power according to the speed of heating material for the kth time to output heating time
Thereby keeping the power P of the heater 2 constant by adjusting the heating time PWMon.
Specifically, the heater 2 in this embodiment is a porous ceramic heater, and the flow guide surface on the top of the heater has a plurality of flow guide holes, so that the speed of the heating material mentioned in this embodiment is the permeation speed of the heating material into the through hole; wherein the contact area S in step a2 is the contact area between the heating material and the heater, and when the heater is rectangular, the area of the rectangle is the product of length and width, and the shape of the heater is not limited in this embodiment; supporting force F in step b21The heating material is an upward friction force generated between the heating material and the wall surface of the flow guide hole when penetrating into the flow guide hole, and is obtained through multiple times of experimental data in the embodiment; setting the trimming power delta2(k) Fine tuning of the power delta2(k) The electronic cigarette is obtained by calculating according to the speed of a heating material, and under different heating times, the heating time PWMon is adjusted through the change of the permeation speed of the heating material, so that the current heating time PWMon can keep the power P of the heater 2 constant, and the aim of keeping the smoke taste or mouthfeel of the electronic cigarette unchanged is fulfilled.
In the power adjustment method for an electronic cigarette provided in this embodiment, as shown in fig. 6, in step E, power adjustment is performed according to the pressure on the surface of the heater 2 during the k-th heating, and the steps include:
a3. assuming that the weight of the heating material is M, the contact area between the heating material and the heater 2 is S, and g is the gravity acceleration, the weight of the heating material when the heater 2 heats k times is M (k) ═ M (M-k)/M, where M is the total heating times of the heater 2;
b3. the resultant force of the heating material on the surface of the heater 2 is F (k) ═ g × m (k) — F1，F1The supporting force of the heater 2 to the heating material;
c3. the pressure of the surface of the heater 2 is Pr(k) F (k)/S, and the fine tuning power is set to δ3(k)＝K3*Pr(k) In which K is3Is a calibration factor;
d3. adjusting power according to the pressure of the heater 2 surface during the k-th heating to output heating time
Thereby keeping the power P of the heater 2 constant by adjusting the heating time PWMon.
In particular, the supporting force F1The heating material is an upward friction force generated between the heating material and the wall surface of the flow guide hole when penetrating into the flow guide hole, and is obtained through multiple times of experimental data in the embodiment; in the present embodiment, the trimming power δ is set according to the change of the pressure on the surface of the heater 2 caused by the change of the mass of the heating material3(k) Micro toRegulating power delta3(k) The heating power P of the heater 2 can be made constant similarly to the adjustment effect of the heating time PWMon.
In the power adjustment method for the electronic cigarette provided in this embodiment, as shown in fig. 7, in the step a, the controller 1 is further connected with a plurality of air pressure detecting elements in a signal manner, the plurality of air pressure detecting elements are used for detecting air pressure or air pressure difference or equivalent air pressure in a smoke channel of the electronic cigarette, the air pressure or air pressure difference or equivalent air pressure is set to be P1, and P1 is used for adjusting the heating time PWMon. The method for regulating the heating time PWMon by the P1 comprises the following steps:
a4. when P1 is more than or equal to P1max, P1max is the set maximum value of air pressure, and the heater 2 is heated at full speed, i.e. heating time
b4. When P1<At P1max, the fine tuning power delta is set4(k)＝K4P1, wherein K4To calibrate the coefficients, the
Therefore, when the heater is heated for the kth time, the heating time PWMon is adjusted according to the air pressure or the air pressure difference or the equivalent air pressure in the smoke channel, and the effect of keeping the power P of the heater 2 constant is achieved.
Specifically, the number of the air pressure detecting pieces may be one or two or more, preferably, when the number of the air pressure detecting pieces is one, when a user inhales, the air pressure P1 in the smoke channel of the electronic cigarette may be detected by the air pressure detecting pieces, and then the air pressure P1 is compared with the set maximum value P1max of the air pressure; when the number of the air pressure detection pieces is two, the air pressure difference P1 between the two positions can be detected by arranging the two air pressure detection pieces at the positions with different heights in the smoke channel, and the heating time PWMon is adjusted according to the air pressure difference P1; of course, the number of the air pressure detecting members may be more, and the embodiment is not limited. If P1 is greater than or equal to P1max, heater 2 heats up at the fastest rate to achieve the desired level of inspiration by the userThe power with the same strength is relatively high, so that the atomization of the heating material can be finished at the highest speed; if P1 is less than PImax, then the trim power δ is set in conjunction with the air pressure P14(k)＝K4P1, the heating time PWMon is adjusted, that is, in this embodiment, the heating time PWMon is flexibly changed according to the strength of the user inhaling air, so as to achieve the purpose of keeping the heating power P constant.
In the power adjustment method of the electronic cigarette provided in this embodiment, as shown in fig. 8, the method for adjusting the heating time PWMon by P1 includes:
a5. when P1 is more than or equal to P1max, P1max is the set maximum value of air pressure, and the heater 2 is heated at full speed, i.e. heating time
b5. When P1<At P1max, the fine tuning time is set to delta5(k)＝K5P1, wherein K5To calibrate the coefficients, then
Therefore, when the electronic cigarette is heated for the kth time, the heating time PWMon is adjusted according to the time of inhaling when the user uses the electronic cigarette for the kth time, and the effect of keeping the power P of the heater 2 constant is achieved.
Specifically, unlike the manner of adjustment of the variation in P1 by the user inhaling, in the present embodiment, the heating time PWMon is adjusted by the inhalation time of each time when the user uses the electronic cigarette, thereby controlling the constancy of the heating power P of the heater 2.
The power adjustment method for the electronic cigarette provided by the embodiment is used for adjusting the fine adjustment factor of the heating time PWMon, and can be obtained by combining the above embodiments, for example, by adjusting the fine adjustment power δ1(k) To fine tuning of the power delta4(k) And a fine tuning time delta5(k) While for adjustment of the heating time, the total trimming factor is then delta9(k)＝K9*(δ1(k)+δ2(k)+δ3(k)+δ4(k)+δ5(k) K9, where K9 is a calibration coefficient, obtained through a large number of experimental data,thereby heating time
Of course, the power δ can be fine-tuned by combining1(k) To fine tuning of the power delta4(k) And a fine tuning time delta5(k) Two or three or four of the 5 independent trimming factors are combined in the same way as the combination of the 5 trimming factors, and the corresponding calibration coefficients are obtained through a large amount of experimental data, so that the purpose of controlling the heating time is achieved.
According to the power adjustment method of the electronic cigarette provided by the embodiment, as shown in fig. 1, the controller 1 is further connected with a bluetooth module 7 and/or a WIFI module 8 through signals.
Specifically, the use data of the electronic cigarette is stored in a memory of the controller 1 or stored in the memory 5, and meanwhile, data communication can be carried out with the intelligent terminal through the Bluetooth module 7 and/or the WIFI module 8, so that the inquiry and analysis of a user are facilitated.
Although the present invention has been described with reference to the above preferred embodiments, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. The power adjustment method of the electronic cigarette comprises a controller and a heater, wherein the controller is in signal connection with a temperature detection part for detecting temperature, a power supply part for providing voltage for the controller and the heater and a memory for storing use information of the electronic cigarette, the controller is electrically connected with the heater, and the power adjustment method is characterized in that: the method comprises the following steps:
A. the controller collects the voltage of the heater and the real-time voltage of the power supply part in real time, and respectively calculates the real-time resistance R (i) of the heater and the real-time voltage Vbat of the power supply part according to the collected voltages, wherein i is the frequency of collecting the voltage of the heater, and the temperature detection part detects the temperature temp (i) of the heater in real time;
B. generating a temperature table (i) ([ r (i),) according to the real-time resistance r (i) and the real-time temperature temp (i) of the heater;
C. when the electronic cigarette is used, the temperature detection part detects the temperature of the heater in real time, the controller collects the voltage Vbat of the power supply part and the temperature detection data of the temperature detection part for many times, and then the resistance R of the current heater is obtained through calculation according to the temperature table (i);
D. setting the power of the heater as P, the heating driving signal of the heater as PWM driving signal, and the duty ratio of the PWM driving signal is D ═ PWMon/T, where PWMon is the heating time of the heater, T is the period of the PWM driving signal, and the voltage U ═ V on the heaterbatD, the power P of the heater is U2/R＝(Vbat*D)2Heating time/R
E. The real-time voltage Vbat of the power supply part and the real-time resistance R (i) of the heater are changed according to time, and the constant heater power P is obtained by adjusting the heating time PWMon.
2. The power adjustment method of the electronic cigarette according to claim 1, wherein: in the step E, the heating time PWMon is adjusted according to the heating times, and the steps are as follows:
a1. setting the total heating times of the heater as M, recording the current heating times by the controller every time the heater heats once, simultaneously storing the recorded times k in the memory by the controller when the heater heats for the kth time, and setting the fine tuning power delta1(k)＝K1*k/M，K1Is a calibration factor;
b1. make the heating time longer
By fine tuning the power delta1(k) To obtain a more precise heating time PWMon, thus keeping the power P of the heater constant.
3. The power adjustment method of the electronic cigarette according to claim 1, wherein: in step E, the heating time PWMon is adjusted according to the speed of the heating material during the k-th heating, and the steps comprise:
a2. setting the weight of the heating material as M, the contact area of the heating material and the heater as S, and g as gravity acceleration, wherein the weight of the heating material when the heater heats for the k time is M (k) ═ M (M-k)/M, and M is the total heating times of the heater;
b2. the resultant force of the heating material on the heater surface is F (k) ═ g × m (k) — F1，F1The supporting force of the heater to the heating material is provided;
c2. setting the speed of the heating material as ve (k), the heating time as t and the acceleration as a, the resultant force F (k) m (k) V of the heating material on the surface of the heatere(k) T, then Ve(k) Setting a fine tuning power δ (f (k) × t/m (k))2(k)＝K2*Ve(k) In which K is2Is a calibration factor;
d2. adjusting power according to the speed of heating material for the kth time to output heating time
Thereby keeping the power P of the heater constant by adjusting the heating time PWMon.
4. The power adjustment method of the electronic cigarette according to claim 2, wherein: in step E, the heating time PWMon is adjusted by combining the number of times the material is heated and the speed at which the material is heated at the k-th heating, and the step includes:
a2. setting the weight of the heating material as M, the contact area of the heating material and the heater as S, and g as gravity acceleration, wherein the weight of the heating material when the heater heats for the k time is M (k) ═ M (M-k)/M, and M is the total heating times of the heater;
b2. the resultant force of the heating material on the heater surface is F (k) ═ g × m (k) — F1，F1The supporting force of the heater to the heating material is provided;
c2. setting the speed of the heating material as ve (k), the heating time as t and the acceleration as a, the resultant force F (k) m (k) V of the heating material on the surface of the heatere(k) T, then Ve(k) Setting a fine tuning power δ (f (k) × t/m (k))2(k)＝K2*Ve(k) In which K is2Is a calibration factor;
d2. combined with fine tuning of power delta1(k) And fine tuning the power delta2(k) Calculating the combined fine tuning power delta6(k)＝K6(δ1(k)+δ2(k) K6 is a calibration factor obtained from a large number of experimental data to output a heating time
Thereby keeping the power P of the heater constant by adjusting the heating time PWMon.
5. The power adjustment method of the electronic cigarette according to claim 1, wherein: in step E, adjusting the power according to the pressure on the surface of the heater during the k-th heating, which comprises the following steps:
a3. setting the weight of the heating material as M, the contact area of the heating material and the heater as S, and g as gravity acceleration, wherein the weight of the heating material when the heater heats for the k time is M (k) ═ M (M-k)/M, and M is the total heating times of the heater;
b3. the resultant force of the heating material on the heater surface is F (k) ═ g × m (k) — F1，F1The supporting force of the heater to the heating material is provided;
c3. pressure of heater surface is Pr(k) F (k)/S, and the fine tuning power is set to δ3(k)＝K3*Pr(k) In which K is3Is a calibration factor;
d3. according to the k-th additionThe pressure on the surface of the heater is adjusted during heating to output heating time
Thereby keeping the power P of the heater constant by adjusting the heating time PWMon.
6. The power adjustment method of the electronic cigarette according to claim 2, wherein: in step E, the power adjustment is performed by combining the number of times of heating the heating material and the pressure of the heater surface at the k-th heating, and the steps include:
a3. setting the weight of the heating material as M, the contact area of the heating material and the heater as S, and g as gravity acceleration, wherein the weight of the heating material when the heater heats for the k time is M (k) ═ M (M-k)/M, and M is the total heating times of the heater;
b3. the resultant force of the heating material on the heater surface is F (k) ═ g × m (k) — F1，F1The supporting force of the heater to the heating material is provided;
c3. pressure of heater surface is Pr(k) F (k)/S, and the fine tuning power is set to δ3(k)＝K3*Pr(k) In which K is3Is a calibration factor;
d3. combined with fine tuning of power delta1(k) And fine tuning the power delta3(k) Calculating the combined fine tuning power delta7(k)＝K7(δ1(k)+δ3(k) K7 is a calibration factor obtained from a large number of experimental data to output a heating time
Thereby keeping the power P of the heater constant by adjusting the heating time PWMon.
7. The power adjustment method of the electronic cigarette according to claim 3, wherein: the adjusting step of the heating time PWMon further includes:
e2. pressure of heater surface is Pr(k) F (k)/S, setting the fine tuning powerIs delta3(k)＝K3*Pr(k) In which K is3Is a calibration factor;
f2. combined with fine tuning of power delta2(k) And fine tuning the power delta3(k) Calculating the combined fine tuning power delta8(k)＝K8(δ2(k)+δ3(k) K8 is a calibration factor obtained from a large number of experimental data to output a heating time
Thereby keeping the power P of the heater constant by adjusting the heating time PWMon.
8. The power adjustment method of the electronic cigarette according to claim 1, wherein: in the step a, the controller is further in signal connection with a plurality of air pressure detection pieces, the air pressure detection pieces are used for detecting air pressure or air pressure difference or equivalent air pressure in a smoke channel of the electronic cigarette, the air pressure or air pressure difference or equivalent air pressure is set to be P1, and P1 is used for adjusting the heating time PWMon.
9. The power adjustment method of an electronic cigarette according to claim 8, wherein: the method for regulating the heating time PWMon by the P1 comprises the following steps:
a4. when P1 is more than or equal to P1max, P1max is the set maximum value of air pressure, and the heater is heated at full speed, i.e. heating time
b4. When P1<At P1max, the fine tuning power delta is set4(k)＝K4P1, wherein K4To calibrate the coefficients, the
Therefore, when the heater is heated for the kth time, the heating time PWMon is adjusted according to the air pressure or the air pressure difference or the equivalent air pressure in the smoke channel, and the effect of keeping the power P of the heater constant is achieved.
10. The power adjustment method of an electronic cigarette according to claim 8, wherein: the method for regulating the heating time PWMon by the P1 comprises the following steps:
a5. when P1 is more than or equal to P1max, P1max is the set maximum value of air pressure, and the heater is heated at full speed, i.e. heating time
b5. When P1<At P1max, the fine tuning time is set to delta5(k)＝K5P1, wherein K5To calibrate the coefficients, then
Therefore, when the electronic cigarette is heated for the kth time, the heating time PWMon is adjusted according to the time of inhaling when the user uses the electronic cigarette for the kth time, and the effect of keeping the power P of the heater constant is achieved.
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| US20140334804A1 (en) * | 2012-03-26 | 2014-11-13 | Enbright Co., Ltd. | Atomization control unit and a portable atomizing apparatus having the same |
| US9423152B2 (en) * | 2013-03-15 | 2016-08-23 | R. J. Reynolds Tobacco Company | Heating control arrangement for an electronic smoking article and associated system and method |
| CN205196989U (en) * | 2013-06-26 | 2016-05-04 | 吉瑞高新科技股份有限公司 | Electronic cigarette |
| CN105042879B (en) * | 2015-07-08 | 2018-09-18 | 广东中烟工业有限责任公司 | The non-combustion-type tobacco product of hot type fever source composition and application |
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