CN209002920U - Temperature sensing circuit and electronic cigarette - Google Patents
Temperature sensing circuit and electronic cigarette Download PDFInfo
- Publication number
- CN209002920U CN209002920U CN201820993636.4U CN201820993636U CN209002920U CN 209002920 U CN209002920 U CN 209002920U CN 201820993636 U CN201820993636 U CN 201820993636U CN 209002920 U CN209002920 U CN 209002920U
- Authority
- CN
- China
- Prior art keywords
- heater element
- temperature
- sensing circuit
- temperature sensing
- resistance value
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Control Of Resistance Heating (AREA)
Abstract
The utility model embodiment discloses a kind of temperature sensing circuit and electronic cigarette, for detecting the heating temperature of electronic cigarette, comprising: Power Entry Module, for inputting controllable electric power；Sampling resistor is electrically connected with the Power Entry Module, for sampling to the electric current in circuit；Heater element is electrically connected with the sampling resistor, for the smokeable material heating in the electron cigarette that gives off heat；Control module, it is electrically connected with the Power Entry Module, sampling resistor and heater element, output is opened for controlling the Power Entry Module, and the resistance value of the heater element is calculated after the Power Entry Module opens output, the temperature of the heater element is obtained in conjunction with the resistance value of the heater element and the corresponding relationship of temperature.The circuit structure of foregoing circuit is simple, so that design cost reduces, while can guarantee that the temperature data of measurement is accurate, and have wider application range.
Description
Technical field
The utility model relates to electronic technology field more particularly to a kind of temperature sensing circuits and electronic cigarette.
Background technique
Electronic cigarette is a kind of electronic product for imitating cigarette, there is appearance, smog, taste and the feeling as cigarette.
Tobacco type electronic cigarette evaporates smog by carrying out heated at constant temperature baking to tobacco so that user sucks.The temperature control of electronic cigarette
Technology processed has been largely fixed the quality of electronic cigarette, and it is temperature controlled during requirement to temperature detecting precision compared with
It is high.
Temperature acquisition is carried out dependent on temperature sensor in traditional electronic cigarette temperature control technology, the acquisition of temperature information comes from
In the data that temperature sensor transmits.And temperature sensor must be adequately exposed to heater just and can be correctly obtained temperature data,
Due to being limited to the volume size of temperature sensor, it is difficult to temperature sensor be allowed to come into full contact with heater, and temperature sensor
It is difficult to be fixed on heater, and temperature sensor needs data line to be connected to microcontroller, therefore examines using temperature sensor
The structure design of testing temperature is extremely difficult, and design cost is higher.
In addition, heater needs to come into full contact with heating object, there is temperature sensor that can seriously affect on heater surface
Heating object is inserted and removed from.Since temperature sensor is in heater surface or periphery, if there is air flows, temperature is passed
The temperature of sensor can acute variation and practical calandria temperature change and little, cause the temperature error of temperature sensor measurement compared with
Greatly.
Utility model content
It is larger, simultaneously using the error of temperature sensor measurement temperature in conditional electronic cigarette temperature control technology to solve based on this
And the higher technical problem of design cost, spy propose a kind of temperature sensing circuit and electronic cigarette.
A kind of temperature sensing circuit, for detecting the heating temperature of electronic cigarette, comprising:
Power Entry Module, for inputting controllable electric power；
Sampling resistor is electrically connected with the Power Entry Module, for sampling to the electric current in circuit；
Heater element is electrically connected with the sampling resistor, for the smokeable material heating in the electron cigarette that gives off heat；
Control module is electrically connected with the Power Entry Module, sampling resistor and heater element, described for controlling
Power Entry Module opens output, and the resistance of the heater element is calculated after the Power Entry Module opens output
Value, the temperature of the heater element is obtained in conjunction with the resistance value of the heater element and the corresponding relationship of temperature.
Optionally, the Power Entry Module includes signal input part and switch module, institute in one of the embodiments,
Signal input part and switch module electrical connection are stated, the signal input part is used for input pulse width modulated signal, the switch
The pulse width modulating signal that module is used to be inputted according to the signal input part realizes on-off control.
Optionally, the switch module includes triode, metal-oxide-semiconductor, low pressure difference linearity pressure stabilizing in one of the embodiments,
At least one of device, Switching Power Supply.
Optionally, the control module is MCU chip in one of the embodiments, and the MCU chip controls the letter
When number input terminal high input voltage, the switch module conducting；The MCU chip controls the signal input part and inputs low-voltage
When, the switch module disconnects.
Optionally, in one of the embodiments, the resistance value of the sampling resistor be less than the heater element resistance value.
Optionally, the sampling resistor is connected with heater element in one of the embodiments, and the control module is being controlled
The voltage value of the sampling resistor and heater element is read after Power Entry Module opening output processed, and according to formula
RL=R*N1/ (N2-N1)
Calculate the resistance value of the heater element, wherein RL is the resistance value of heater element, and R is the electricity of sampling resistor
Resistance value, N1 are the voltage value of heater element, and N2 is the voltage value of sampling resistor.
Optionally, the heater element includes resistance wire in one of the embodiments,.
Optionally, the resistance value with temperature of the heater element are in a linear relationship in one of the embodiments,.
Optionally, the Power Entry Module further includes battery, battery and the switching molding in one of the embodiments,
Block electrical connection, for giving rear end loop power supply.
In addition, for solve conditional electronic cigarette temperature control technology in using temperature sensor measurement temperature error it is larger and
A kind of higher technical problem of design cost, it is also proposed that electronic cigarette.
A kind of electronic cigarette, including above-mentioned temperature sensing circuit, the electronic cigarette use the temperature when carrying out temperature control
It spends detection circuit and carries out temperature detection.
Implement the utility model embodiment, will have the following beneficial effects:
After above-mentioned temperature sensing circuit and electronic cigarette, by by control module and Power Entry Module, sampling
Resistance and heater element are electrically connected, and when temperature detection is opened, control module controls Power Entry Module opening and exports, and
The resistance value of heater element is calculated after Power Entry Module opening output, the resistance value in conjunction with heater element is corresponding with temperature
The temperature of relationship acquisition heater element.Temperature sensing circuit and electronic cigarette provided by the utility model, circuit structure is simple, so that
Design cost reduces, while can guarantee that the temperature data of measurement is accurate, and have wider application range.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, it is also possible to obtain other drawings based on these drawings.
Wherein:
Fig. 1 is the structural block diagram of temperature sensing circuit in one embodiment；
Fig. 2 is the circuit diagram of temperature sensing circuit in one embodiment；
Fig. 3 is resistance value-temperature profile of heater element in one embodiment.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without creative efforts
Every other embodiment obtained, fall within the protection scope of the utility model.
To solve to use the error of temperature sensor measurement temperature larger in conditional electronic cigarette temperature control technology and be designed to
This higher technical problem, in the present embodiment, spy proposes a kind of temperature sensing circuit, for detecting the fever temperature of electronic cigarette
Degree.As shown in Figure 1, the temperature sensing circuit includes Power Entry Module 110, sampling resistor 120, heater element 130 and control
Module 140, Power Entry Module 110, sampling resistor 120, heater element 130 and control module 140 are sequentially connected electrically, and control mould
Block 140 is electrically connected with Power Entry Module 110, sampling resistor 120, heater element 130.
Wherein, Power Entry Module 110 is for inputting controllable electric power into circuit, and the power supply of output is by control module
140 are controlled, such as control module 140 can issue what pulse width modulating signal control Power Entry Module 110 exported
Power supply is high voltage or low-voltage, and then realizes the switch control of temperature sensing circuit.
Sampling resistor 120 is the electricity of the heater element 130 in measuring circuit for sampling to the electric current in circuit
Resistance value is as referring to, and the resistance value of sampling resistor is less than the resistance value of the heater element in the present embodiment, in other embodiments also
It can be set to sample the voltage in circuit by sampling resistor, when sampling voltage by sampling resistor
The resistance value that sampling resistor can also be arranged is greater than the resistance value of heater element.
Heater element 130 is for the smokeable material heating in the electron cigarette that gives off heat, to evaporate smog, wherein sending out
Thermal element can be the resistance with heating function, such as resistance wire, and in other embodiments, heater element can also be other
Element of material, such as aluminum oxide, zirconium oxide, nickel, titanium etc..Wherein the resistance value with temperature of heater element 130 are linearly closed
System.
Control module 140 opens output for controlling Power Entry Module 110, and opens in Power Entry Module 110 defeated
The resistance value that heater element 130 is calculated after out is generated heat in conjunction with the resistance value of heater element 130 and the corresponding relationship of temperature
The temperature of element 130.
Temperature sensing circuit provided in this embodiment, circuit structure is simple, so that design cost reduces, while can protect
The temperature data for demonstrate,proving measurement is accurate, and has a wide range of application, can suitable for high current, low current circuit, further
, safety can be promoted by the temperature sensing circuit of this implementation, without the device using High-current output, merely with thermometric
Circuit just may know that heater element with the presence or absence of abnormal.
In one embodiment, Power Entry Module 110 includes signal input part and switch module, the signal input part
It is electrically connected with switch module, the signal input part is used for input pulse width modulated signal, and the switch module is used for basis
The pulse width modulating signal of the signal input part input realizes on-off control, so that the switch control of temperature detection is more just
It is prompt.Optionally, switch module includes but is not limited to NPN type triode, PNP type triode, PMOS tube, NMOS tube, low voltage difference line
Property voltage-stablizer, Switching Power Supply.
Further, Power Entry Module 110 further includes battery, and battery is electrically connected with the switch module, after giving
End loop power supply.
In one embodiment, control module can be MCU chip, and it is high that MCU chip controls the signal input part input
When voltage, then switch module is connected, and Power Entry Module input power is into circuit；Signal input part described in MCU chip controls
When inputting low-voltage, then switch module disconnects, and does not have power input in rear end loop.It should be noted that control module may be used also
To be the power supply chips such as other chips with control function, such as TNY256, TL494, the present embodiment is to this without limiting.
As shown in Fig. 2, for the circuit diagram of temperature sensing circuit in one embodiment, input terminal R_DET_EN passes through
Resistance R2 is connected to the base stage of triode Q1, and the collector of triode Q1 is connect with power end V_BAT, the emitter of triode Q1
It is connect with one end of resistance R1, one end of resistance RL is connect with resistance R1, the other end ground connection of resistance RL, in resistance R1 and three poles
Port V_OUT_DET is drawn between the emitter of pipe Q1, and port V_OUT is drawn between resistance R1 and resistance RL.
Wherein, triode Q1 is NPN type triode, and when the base stage of triode Q1 receives high voltage, triode Q1 is led
Logical, when the base stage of triode Q1 receives low-voltage, triode Q1 is disconnected；Resistance R1 is sampling resistor, and resistance RL is fever
Element, resistance R1 connect with resistance RL, series loop are formed, by the electric current in resistance R1 sampling circuit, according to Ohm's law
The resistance value that resistance RL can be calculated passes through the resistance value of heater element and the available heater element of the mapping table of temperature
Temperature.
Specifically, MCU chip reads the voltage value of the resistance R1 and resistance RL after triode Q1 conducting, pass through at this time
The voltage value of MCU chip read port V_OUT is N1, the voltage value of port V_OUT_DET is N2, then flows through the electricity of resistance R1
Stream are as follows:
I=(N2-N1)/R1
To calculate the resistance value of resistance RL are as follows:
RL=N1/i=R1*N1/ (N2-N1)
Wherein, RL is the resistance value of heater element, and R1 is the resistance value of sampling resistor, and N1 is the voltage value of heater element,
N2 is the voltage value of sampling resistor.
Further, according to the mapping table of the resistance value of heater element and temperature, the resistance value table of available resistance RL
The heating temperature shown.Resistance value-temperature curve of heater element in one embodiment is illustrated in figure 3, in the present embodiment, according to hair
The different resistance values of thermal element can correspond to the corresponding temperature of current resistance value for obtaining the heater element, shown in table specific as follows:
It is understood that different heater elements is corresponding with different resistance value-temperature curves, different heater elements
Resistance and the mapping table of temperature are also different, and the present embodiment will not enumerate explanation.
Based on identical inventive concept, the utility model also provides a kind of electronic cigarette, including the temperature in such as above-described embodiment
Detection circuit is spent, which carries out temperature detection using the temperature sensing circuit when carrying out temperature control.Optionally, should
Electronic cigarette can be the electronic cigarette tobacco rod of hot type electronic cigarette, can accommodate the smokeable material such as pipe tobacco, and can be right
The smokeable material is heated so that user aspirates.
Implement the utility model embodiment, will have the following beneficial effects:
After above-mentioned temperature sensing circuit and electronic cigarette, by by control module and Power Entry Module, sampling
Resistance and heater element are electrically connected, and when temperature detection is opened, control module controls Power Entry Module opening and exports, and
The resistance value of heater element is calculated after Power Entry Module opening output, the resistance value in conjunction with heater element is corresponding with temperature
The temperature of relationship acquisition heater element.Temperature sensing circuit and electronic cigarette provided by the utility model, circuit structure is simple, so that
Design cost reduces, while can guarantee that the temperature data of measurement is accurate, and have wider application range.
The several embodiments of the application above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
The limitation to the application the scope of the patents therefore cannot be interpreted as.It should be pointed out that for those of ordinary skill in the art
For, without departing from the concept of this application, various modifications and improvements can be made, these belong to the guarantor of the application
Protect range.Therefore, the scope of protection shall be subject to the appended claims for the application patent.
Claims (10)
1. a kind of temperature sensing circuit, for detecting the heating temperature of electronic cigarette characterized by comprising
Power Entry Module, for inputting controllable electric power；
Sampling resistor is electrically connected with the Power Entry Module, for sampling to the electric current in circuit；
Heater element is electrically connected with the sampling resistor, for the smokeable material heating in the electron cigarette that gives off heat；
Control module is electrically connected with the Power Entry Module, sampling resistor and heater element, for controlling the power supply
Input module opens output, and the resistance value of the heater element, knot are calculated after the Power Entry Module opens output
The corresponding relationship of the resistance value and temperature of closing the heater element obtains the temperature of the heater element.
2. temperature sensing circuit according to claim 1, which is characterized in that the Power Entry Module includes signal input
End and switch module, the signal input part and switch module electrical connection, the signal input part are used for input pulse width tune
Signal processed, the pulse width modulating signal that the switch module is used to be inputted according to the signal input part realize on-off control.
3. temperature sensing circuit according to claim 2, which is characterized in that the switch module includes triode, MOS
At least one of pipe, low pressure difference linear voltage regulator, Switching Power Supply.
4. temperature sensing circuit according to claim 3, which is characterized in that the control module is MCU chip, described
When MCU chip controls the signal input part high input voltage, the switch module conducting；The MCU chip controls the letter
When number input terminal input low-voltage, the switch module is disconnected.
5. temperature sensing circuit according to claim 1, which is characterized in that the resistance value of the sampling resistor is less than the hair
The resistance value of thermal element.
6. temperature sensing circuit according to claim 1, which is characterized in that the sampling resistor is connected with heater element,
The control module reads the voltage value of the sampling resistor and heater element after control Power Entry Module opens output, and
According to formula
RL=R*N1/ (N2-N1)
Calculating the resistance value of the heater element, wherein RL is the resistance value of heater element, and R is the resistance value of sampling resistor,
N1 is the voltage value of heater element, and N2 is the voltage value of sampling resistor.
7. temperature sensing circuit according to claim 1, which is characterized in that the heater element includes resistance wire.
8. temperature sensing circuit according to claim 7, which is characterized in that the resistance value and temperature of the heater element are in line
Sexual intercourse.
9. temperature sensing circuit according to claim 2, which is characterized in that the Power Entry Module further includes battery,
Battery is electrically connected with the switch module, for giving rear end loop power supply.
10. a kind of electronic cigarette, which is characterized in that including such as described in any item temperature sensing circuits of claim 1-9, the electricity
Sub- cigarette carries out temperature detection using the temperature sensing circuit when carrying out temperature control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820993636.4U CN209002920U (en) | 2018-06-25 | 2018-06-25 | Temperature sensing circuit and electronic cigarette |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820993636.4U CN209002920U (en) | 2018-06-25 | 2018-06-25 | Temperature sensing circuit and electronic cigarette |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209002920U true CN209002920U (en) | 2019-06-21 |
Family
ID=66828834
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820993636.4U Active CN209002920U (en) | 2018-06-25 | 2018-06-25 | Temperature sensing circuit and electronic cigarette |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209002920U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113342092A (en) * | 2021-05-08 | 2021-09-03 | 铂德（深圳）科技有限公司 | Temperature control method and device, computer equipment and storage medium |
| CN113729313A (en) * | 2021-10-20 | 2021-12-03 | 深圳烟草工业有限责任公司 | Heating smoking set calibration method and system |
| CN113925217A (en) * | 2021-10-20 | 2022-01-14 | 深圳烟草工业有限责任公司 | Heating smoking set circuit and control method thereof |
-
2018
- 2018-06-25 CN CN201820993636.4U patent/CN209002920U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113342092A (en) * | 2021-05-08 | 2021-09-03 | 铂德（深圳）科技有限公司 | Temperature control method and device, computer equipment and storage medium |
| CN113729313A (en) * | 2021-10-20 | 2021-12-03 | 深圳烟草工业有限责任公司 | Heating smoking set calibration method and system |
| CN113925217A (en) * | 2021-10-20 | 2022-01-14 | 深圳烟草工业有限责任公司 | Heating smoking set circuit and control method thereof |
| CN113729313B (en) * | 2021-10-20 | 2022-08-30 | 深圳烟草工业有限责任公司 | Heating smoking set calibration method and system |
| CN113925217B (en) * | 2021-10-20 | 2022-10-18 | 深圳烟草工业有限责任公司 | Heating smoking set circuit and control method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108873976A (en) | The temperature control system of electronic cigarette | |
| CN209002920U (en) | Temperature sensing circuit and electronic cigarette | |
| CN104037719B (en) | It is a kind of for the overcurrent of electronic cigarette or the control device and method of short-circuit protection | |
| CN109805451A (en) | Invariable power anti-dry electronic cigarette and its control method | |
| US20140251324A1 (en) | Method and device for heating control of an electronic cigarette | |
| CN109478612A (en) | Electrical steam cigarette device, battery section and charger | |
| CN109907374A (en) | It is segmented heating type temperature control system and electronic cigarette | |
| CN108391856A (en) | A kind of electronics heating control system, electronic heating apparatus and its method for heating and controlling | |
| CN103859603A (en) | Intelligent electric heating cigarette capable of regulating smoke quantity | |
| CN108402525A (en) | The infrared temperature control system and its control method of electronic heating apparatus | |
| CN207217700U (en) | A kind of battery heater circuit, battery heating device and unmanned plane | |
| CN209231795U (en) | A kind of temperature control panel of aerosol generating device | |
| CN109247621A (en) | Method for controlling heating temp of microwaven and device, electronic cigarette equipment based on electronic cigarette | |
| CN203676125U (en) | Intelligent electrical heating cigarette capable of adjusting smoke volume | |
| CN107525563A (en) | A kind of resistance-type level transducer measuring circuit and the measuring circuit self-adapting measuring method | |
| CN206556400U (en) | A kind of pasta produces drying control system | |
| CN109007979A (en) | The temperature display system and electronic cigarette equipment of electronic cigarette | |
| CN103558578A (en) | Thermistor detection system for electronic electric energy meter and method of system | |
| CN204070534U (en) | Electronic cigarette | |
| CN208190075U (en) | Intelligent operation control device of switch cabinet | |
| CN208523769U (en) | A kind of apparatus for aerosol creation and its circuit | |
| CN204188299U (en) | Multichannel IGBT inner NTC high temperature real-time detection circuit | |
| CN204330173U (en) | A kind of easy electronic temperature transmitter | |
| CN209152356U (en) | The temperature display system and electronic cigarette equipment of electronic cigarette | |
| CN209589289U (en) | A kind of temperature collection circuit, wiring board, electric machine controller and vehicle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220527 Address after: 723000 No. 23, group 2, wangdaochi village, Laojun Town, Hantai District, Hanzhong City, Shaanxi Province Patentee after: Li Wenfang Address before: 518000 room 506, 5 / F, building 6, zone 2, Shenzhen Bay science and technology ecological park, Gaoxin South Jiudao, Yuehai street, Nanshan District, Shenzhen City, Guangdong Province Patentee before: SHENZHEN LEAFTEC Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220704 Address after: 518000 workshop 301, No. 2, Yanshan Avenue, Yanchuan community, Yanluo street, Bao'an District, Shenzhen City, Guangdong Province Patentee after: SHENZHEN JIAJU ELECTRONIC TECHNOLOGY CO.,LTD. Address before: 723000 No. 23, group 2, wangdaochi village, Laojun Town, Hantai District, Hanzhong City, Shaanxi Province Patentee before: Li Wenfang |