CN103251134A - Novel electronic cigarette control chip - Google Patents
Novel electronic cigarette control chip Download PDFInfo
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- CN103251134A CN103251134A CN2013101861376A CN201310186137A CN103251134A CN 103251134 A CN103251134 A CN 103251134A CN 2013101861376 A CN2013101861376 A CN 2013101861376A CN 201310186137 A CN201310186137 A CN 201310186137A CN 103251134 A CN103251134 A CN 103251134A
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- electronic cigarette
- chip
- miaow head
- control chip
- smoking
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- 239000003571 electronic cigarette Substances 0.000 title claims abstract description 19
- 230000000391 smoking effect Effects 0.000 abstract description 27
- 230000035945 sensitivity Effects 0.000 abstract description 12
- 235000019504 cigarettes Nutrition 0.000 description 34
- 238000010438 heat treatment Methods 0.000 description 14
- 238000001514 detection method Methods 0.000 description 12
- 230000007613 environmental effect Effects 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000002035 prolonged effect Effects 0.000 description 4
- 238000009835 boiling Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000009514 concussion Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 241000208125 Nicotiana Species 0.000 description 1
- 235000002637 Nicotiana tabacum Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
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- Manufacturing Of Cigar And Cigarette Tobacco (AREA)
Abstract
The invention discloses a novel electronic cigarette control chip. The novel electronic cigarette control chip is characterized in that a capacitance type chip head device is connected with a chip head capacitance detecting device through a constant current generation circuit and the chip head capacitance detecting device is connected with a drive and control circuit device. According to the novel electronic cigarette control chip, sensitivity and reliability of the electronic cigarette chip are effectively improved so that smog can be generated by an electronic cigarette under small sucking force and the phenomenon of smoking caused by spurious triggering is avoided. A series of problems that heat emission of the electronic cigarette is excessive, a plastic outer shell of the electronic cigarette is molten due to burning, the service life of the electronic cigarette is shortened, and a passing rate is low because of smoking operation through continuous spurious triggering for a long time of an existing electronic cigarette chip are effectively solved.
Description
Technical field
The present invention relates to a kind of novel electronic cigarette control chip.
Background technology
The electronics cigarette is to adopt the internal cell power supply, and by inter-process chip sample detecting user smoking action, when detecting user's smoking, triggering signal is delivered to control circuit, drive heating wire atomizing tobacco tar and produce cigarette smell, control corresponding display circuit simultaneously, realize necessary Presentation Function.The electronics cigarette mainly comprises two parts: at first being sample detecting, secondly is heating wire control.For the sample detecting part, have at present by switching regulator miaow head and detect, when the user has the smoking action, since the effect of air pressure, switching regulator miaow head both positive and negative polarity closure, and control circuit begins to drive heating wire after detecting miaow head both positive and negative polarity closure.But in order to improve sensitivity, under very little suction, can detect the smoking action, need lean on the both positive and negative polarity of switching regulator miaow head very closely, like this, under small vibrations, may make the both positive and negative polarity closure of switching regulator miaow head, thereby false triggering smoking, the false triggering meeting causes electronics cigarette excessive heating for a long time, and the battery over-discharge shortens battery life.In addition, because the distance between switching regulator miaow head diaphragm and the fixing base is difficult to accurately control, cause traditional disposable electric smoke product sensitivity low excessively, therefore, traditional miaow head reliability is lower.Produced the electronics cigarette that adopts condenser type miaow head subsequently, condenser type miaow head mainly is made up of conductive film and substrate, because the intensity of air-flow and direction can influence the distance between conductive film and the substrate, and then influence the equivalent capacity of miaow head, just can detect the corresponding smoking of user and move by detecting miaow head capacitance.The introducing of condenser type miaow head, increased the sensitivity of miaow head greatly, but, because the detection of capacitance is comparatively complicated, simultaneously because the design technology deviation of conductive film and the influence that condenser type miaow head can be subjected to environmental condition, for example temperature etc. all can exert an influence to electric capacity, so when condenser type miaow head had with respect to higher sensitivity, the influence factor of reliability was many all the better with respect to traditional switching regulator miaow head.For the heating wire control section, generally the mode of Cai Yonging is after detecting the smoking action, computing circuit sends triggering signal to drive circuit, the conducting of control driving power switching tube is heated outside heating wire, like this, when cell voltage is higher, after the switching tube conducting, the electric current of heating wire is bigger, can shorten battery life.
Summary of the invention
For solving above-mentioned existing shortcoming, main purpose of the present invention is to provide a kind of electronics cigarette control chip of invention, effectively raise sensitivity and the reliability of electronics cigarette chip, make the electronics cigarette under very little suction, also can produce smog, and the phenomenon of false triggering smoking can not take place, and effectively solve the electronics cigarette excessive heating that existing electronics cigarette chip causes because of the false triggering smoking of long-time continuous action, boiling hotization electronics cigarette plastic casing, shorten the life-span of electronics cigarette, a series of problems such as yields is low, optimize drive control part simultaneously, realize drive current stable of different voltages, extending battery life.
For reaching above-described purpose, a kind of novel electronic cigarette control chip of the present invention is got following technical scheme:
A kind of novel electronic cigarette control chip is characterized in that, condenser type miaow head unit is connected with miaow head capacitance detecting device by constant-current generating circuit, and described miaow head capacitance detecting device is connected with the Drive and Control Circuit device.
Automatically identify miaow head electric capacity and refresh the threshold value that detects frequency according to extraneous circumstance in good time, detect externally fed voltage, and adjust type of drive according to voltage, realize stablizing of drive current.
Described Drive and Control Circuit is adjusted automatically according to extraneous supply voltage.
Adopt as above the present invention of technical scheme, have following beneficial effect:
Effectively raise sensitivity and the reliability of electronics cigarette chip, make the electronics cigarette under very little suction, also can produce smog, and the phenomenon of false triggering smoking can not take place, and effectively solve the electronics cigarette excessive heating that existing electronics cigarette chip causes because of the false triggering smoking of long-time continuous action, boiling hotization electronics cigarette plastic casing, shorten the life-span of electronics cigarette, a series of problems such as yields is low, unnecessary power dissipation concerns when effectively solving high voltage work.
Description of drawings
Fig. 1 is structural representation of the present invention.
Fig. 2 is for being reduced to miaow head capacitance the loop oscillation circuit diagram of inner sample frequency.
Fig. 3 is miaow head capacitance detecting internal logic functional diagram.
Fig. 4 produces circuit diagram for driving the control dutycycle.
The specific embodiment
To be described further by the present invention of embodiment below, the description of these embodiment is not that content of the present invention is done restriction.One skilled in the art will understand that to be equal to replacement to what content of the present invention was done, or corresponding the improvement, still belong within protection scope of the present invention.
As shown in Figure 1, a kind of novel electronic cigarette control chip of the present invention, condenser type miaow head unit is connected with miaow head capacitance detecting device by constant-current generating circuit, and miaow head capacitance detecting device is connected with the Drive and Control Circuit device.In the electronics cigarette structure that adopts condenser type miaow head, discharge and recharge by the periodicity of constant current to miaow head electric capacity, realize producing the mode with the concussion frequency of miaow head capacitance variations, detect this frequency and realize the direction of air-flow in the miaow head and the detection of intensity.The self study measuring ability of chip internal realizes that the smoking Characteristics Detection is not subjected to the influence of miaow head technique deviation and environmental change.Inner distinctive noiseproof feature, the filtering external interference is to the influence of electronics cigarette output characteristics.At the driving of heating wire, the constant type of drive that not influenced by cell voltage of a kind of output current is proposed, effectively extending battery life.
As shown in Figure 2, the first-class effect of condenser type miaow is the variable capacitance among the figure, constant current of constant-current generating circuit output of chip internal charges to electric capacity, the electric capacity both end voltage rises linearly, the input that inner reference voltage and electric capacity both end voltage are input to voltage comparator respectively, when capacitance voltage is higher than internal reference voltage, the comparator upset, promote the conducting of nmos switch pipe through several phase inverters, capacitor discharge has realized that like this cycle is only determined by electric capacity to periodically the discharging and recharging of miaow head electric capacity, this circuit will detect the frequency equivalence of capacitance and detection loop oscillator, make things convenient for the realization of logic detection.
As shown in Figure 3, sample frequency is the output frequency of oscillator among Fig. 2, the present invention proposes a kind of sample mode of self study, after system powers on, through certain stabilization time, internal logic is opened the sample frequency counter, and deposits the count value in certain count cycle in register, reference frequency by default has the reference frequency of error acquiescence also can adjust accordingly even guarantee the miaow head technique like this.Simultaneously, logic circuit is periodically counted sample frequency, and with count value the count value in the periodic and register compares by digital comparator A, can produce a contrary effect to frequency with air blowing because the user is air-breathing, so when the change direction that detects frequency with air-breathing when consistent (this state is represented by the output OUT1 of digital comparator), circuit thinks that the user is in suction condition, and calculate the frequency values of real-time sampling with respect to the variable quantity of the frequency values of storing in the register, be the output OUT2 of digital comparator, (this threshold value is done division arithmetic by the frequency values in the register and is produced when this variable quantity reaches certain threshold value, when the i.e. output OUT3 of the divider among the figure) above, built-in system is thought and is in smoking state, and send smoking signal (i.e. the output OUT4 of digital comparator B among the figure) to driver module, finish operation to heating wire by driver module, and then generation smoking effect, simultaneously when internal circuitry senses entry to the change of frequency of miaow head no thanks to the user air-breathing cause, think that then external environment changes, the frequency values to storing in the register that it is in good time that internal circuit can produce refresh control signal OUT5 refreshes, the compare threshold of while renewal frequency, such self study detection mode has effectively been avoided because the false triggering of the smoking action that the intrinsic fabrication error of miaow head and environmental change cause.
As shown in Figure 4, Drive and Control Circuit mainly comprises the output current control module as Fig. 4, power supply bleeder circuit among Fig. 4 is divided into several points with supply voltage, and respectively itself and internal reference voltage are compared, result relatively is input in the output current control control module, the output current control module can be adjusted output current accordingly according to the size of virtual voltage, guarantee that output current almost keeps invariable state in the gamut of cell voltage, realized output current constant in the wideer battery voltage range, increased the stability of output, especially reduce unnecessary current drain under the higher situation of cell voltage, prolonged the service life of battery.
A kind of novel electronic cigarette control chip of the present invention, control opening and closing of electronics cigarette according to the capacitance variations of condenser type miaow head in the electronics cigarette of employing condenser type miaow head, comprise interconnective miaow head capacitance detecting device and Drive and Control Circuit device, the capacitance of miaow head capacitance detecting device condenser type miaow head for detection of the capacitance of condenser type miaow head and when will not have smoking and move is converted into comparison signal, capacitance during in real time with smoking compares, and controls the Drive and Control Circuit device according to comparative result.Electronics cigarette chip among the present invention effectively raises sensitivity and the reliability of electronics cigarette chip, make the electronics cigarette under very little suction, also can produce smog, and the phenomenon of false triggering smoking can not take place, can effectively solve the electronics cigarette excessive heating that existing electronics cigarette chip causes because of the false triggering smoking of long-time continuous action, boiling hotization electronics cigarette plastic casing, shorten the life-span of electronics cigarette, a series of problems such as yields is low.The control that the present invention is directed to electronics cigarette heater strip has simultaneously proposed a kind of self-regulating mechanism, makes that the electric current in the heater strip still can keep constant relatively in wideer battery voltage range, has effectively prolonged the service life of battery.The present invention is primarily aimed at two important modules of electronics cigarette: detection module and drive control module carry out.Be directed to detection module, the present invention proposes a kind of high sensitivity requirement of both having satisfied, the testing mechanism that has higher reliability simultaneously again moves to the smoking of electronics cigarette and detects.Be directed to drive control module, the present invention proposes the control mode that the output current of heating wire is not influenced by cell voltage, effectively optimized output current control, also prolonged the service life of battery simultaneously.At first, the present invention adopts the higher condenser type miaow head of sensitivity as the sensor that detects smoking state, guarantee the requirement of whole electronics cigarette sensitivity, the oscillator signal that adopts comparatively accurate constant current to discharge and recharge simultaneously produces circuit and realizes that miaow head electric capacity is to the conversion of smoking concussion frequency.In circuit of the present invention, for fear of because fabrication error and environmental change cause unnecessary false triggering action, the present invention proposes a kind of detection mode of self study, by automatic identification miaow head electric capacity and the threshold value that refresh detection frequency in good time according to extraneous circumstance, greatly degree has avoided because fabrication error and environmental change to the absolute capacitance value influence and then the error detection of electric capacity takes place, cause the situation of false triggering smoking state.By above 2 points, the present invention has namely guaranteed the characteristic of condenser type miaow head height sensitivity, has avoided again because miaow head manufacture craft error and environmental change cause the situation of electronics cigarette false triggering.Secondly, be directed to control circuit, because whether driver module is according to existing the smoking useful signal to control at power switch pipe, usually under the cell voltage condition with higher, output current is bigger, and the present invention realizes that by changing controlling mechanism cell voltage output current in gamut almost keeps constant output characteristics, not only guaranteed to the stability of heating wire degree of heat simultaneously but also the output current when having reduced that cell voltage is higher, prolonged battery service life.
Claims (3)
1. a novel electronic cigarette control chip is characterized in that, condenser type miaow head unit is connected with miaow head capacitance detecting device by constant-current generating circuit, and described miaow head capacitance detecting device is connected with the Drive and Control Circuit device.
2. a kind of novel electronic cigarette control chip according to claim 1 is characterized in that, identifies miaow head electric capacity automatically and refreshes the threshold value that detects frequency according to extraneous circumstance in good time.
3. a kind of novel electronic cigarette control chip according to claim 1 is characterized in that described Drive and Control Circuit is adjusted automatically according to extraneous supply voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310186137.6A CN103251134B (en) | 2013-05-20 | 2013-05-20 | Novel electronic cigarette control chip |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310186137.6A CN103251134B (en) | 2013-05-20 | 2013-05-20 | Novel electronic cigarette control chip |
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| CN103251134A true CN103251134A (en) | 2013-08-21 |
| CN103251134B CN103251134B (en) | 2015-07-15 |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104055227A (en) * | 2014-07-02 | 2014-09-24 | 深圳市富满电子有限公司 | Electronic cigarette and electronic cigarette lighter control chip and locking/unlocking method thereof |
| CN104102143A (en) * | 2014-06-19 | 2014-10-15 | 卓尔悦（常州）电子科技有限公司 | Control method and device of electronic cigarette with multiple voltage output modes |
| CN104460377A (en) * | 2014-11-28 | 2015-03-25 | 西安拓尔微电子有限责任公司 | Efficient electronic cigarette control chip |
| WO2017012105A1 (en) * | 2015-07-22 | 2017-01-26 | 深圳麦克韦尔股份有限公司 | Electronic cigarette and control method therefor |
| CN107635417A (en) * | 2015-06-10 | 2018-01-26 | 进化有限公司 | Electronic vaporizer with reduced particle size |
| CN107647477A (en) * | 2016-12-30 | 2018-02-02 | 深圳市华芯邦科技有限公司 | NMOS tube drive control circuit, chip, device and driving method |
| CN108463127A (en) * | 2016-01-12 | 2018-08-28 | 莱战略控股公司 | Current measurement in aerosol delivery devices by hall effect sensors |
| CN111449297A (en) * | 2020-04-22 | 2020-07-28 | 深圳市湃科集成技术有限公司 | Electron cigarette miaow head and electron cigarette |
| CN113662261A (en) * | 2021-08-27 | 2021-11-19 | 歌尔微电子股份有限公司 | Electronic cigarette circuit, electronic cigarette control method and electronic cigarette |
| 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 |
| CN114831357A (en) * | 2022-06-13 | 2022-08-02 | 深圳市鹏翔半导体有限公司 | Parameter self-learning electronic cigarette circuit and method for solving abnormity of electronic cigarette |
| CN115153108A (en) * | 2022-08-24 | 2022-10-11 | 无锡矽杰微电子有限公司 | Electronic cigarette microphone detection circuit and method |
| CN115290958A (en) * | 2022-08-18 | 2022-11-04 | 珠海晶通科技有限公司 | A device state adjustment method, device and electronic device |
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| CN103051286A (en) * | 2013-01-15 | 2013-04-17 | 成都三零嘉微电子有限公司 | High-precision relaxation oscillator capable of being trimmed and regulated |
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Patent Citations (5)
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| US20120118307A1 (en) * | 2010-11-12 | 2012-05-17 | Martin Tu | Inhalant smoke generator |
| CN202340821U (en) * | 2011-09-29 | 2012-07-25 | 深圳市奉天元电子有限公司 | Electronic cigarette drive device |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104102143A (en) * | 2014-06-19 | 2014-10-15 | 卓尔悦（常州）电子科技有限公司 | Control method and device of electronic cigarette with multiple voltage output modes |
| CN104102143B (en) * | 2014-06-19 | 2017-04-12 | 卓尔悦欧洲控股有限公司 | Control method and device of electronic cigarette with multiple voltage output modes |
| CN104055227A (en) * | 2014-07-02 | 2014-09-24 | 深圳市富满电子有限公司 | Electronic cigarette and electronic cigarette lighter control chip and locking/unlocking method thereof |
| CN104460377A (en) * | 2014-11-28 | 2015-03-25 | 西安拓尔微电子有限责任公司 | Efficient electronic cigarette control chip |
| CN107635417A (en) * | 2015-06-10 | 2018-01-26 | 进化有限公司 | Electronic vaporizer with reduced particle size |
| WO2017012105A1 (en) * | 2015-07-22 | 2017-01-26 | 深圳麦克韦尔股份有限公司 | Electronic cigarette and control method therefor |
| CN108463127A (en) * | 2016-01-12 | 2018-08-28 | 莱战略控股公司 | Current measurement in aerosol delivery devices by hall effect sensors |
| CN107647477B (en) * | 2016-12-30 | 2023-06-16 | 深圳市华芯邦科技有限公司 | NMOS tube driving control circuit, chip, device and driving method |
| CN107647477A (en) * | 2016-12-30 | 2018-02-02 | 深圳市华芯邦科技有限公司 | NMOS tube drive control circuit, chip, device and driving method |
| CN111449297A (en) * | 2020-04-22 | 2020-07-28 | 深圳市湃科集成技术有限公司 | Electron cigarette miaow head and electron cigarette |
| CN111449297B (en) * | 2020-04-22 | 2023-09-05 | 深圳市湃科集成技术有限公司 | Electronic cigarette miaow head and electronic cigarette |
| CN113662261A (en) * | 2021-08-27 | 2021-11-19 | 歌尔微电子股份有限公司 | Electronic cigarette circuit, electronic cigarette control method and electronic cigarette |
| 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 |
| CN114831357A (en) * | 2022-06-13 | 2022-08-02 | 深圳市鹏翔半导体有限公司 | Parameter self-learning electronic cigarette circuit and method for solving abnormity of electronic cigarette |
| CN115290958A (en) * | 2022-08-18 | 2022-11-04 | 珠海晶通科技有限公司 | A device state adjustment method, device and electronic device |
| CN115153108A (en) * | 2022-08-24 | 2022-10-11 | 无锡矽杰微电子有限公司 | Electronic cigarette microphone detection circuit and method |
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| Publication number | Publication date |
|---|---|
| CN103251134B (en) | 2015-07-15 |
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