CN104808532A

CN104808532A - Igniting type electronic cigarette circuit

Info

Publication number: CN104808532A
Application number: CN201410032751.1A
Authority: CN
Inventors: 田相军
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-01-24
Filing date: 2014-01-24
Publication date: 2015-07-29

Abstract

The invention discloses an igniting type electronic cigarette circuit. The igniting type electronic cigarette circuit mainly comprises a voltage stabilizer, a microcontroller internally provided with a programmable timer, a driving circuit, an N-channel field effect transistor, a switch circuit, an LED display circuit, a heating wire and the like, wherein the driving circuit, the LED display circuit and the switch circuit are connected with the common I/O port of the microcontroller. The igniting type electronic cigarette circuit is characterized by further comprising an igniting circuit, wherein the igniting circuit is a thermistor, and the thermistor is connected with the power-off wake-up pin of the microcontroller. According to the invention, through baking the thermistor, the power-off state of the microcontroller is converted into a normal work state, i.e., smoking is enabled at the moment, and the smoking time is determined by the timer inside the microcontroller. Since igniting is needed, the igniting type electronic cigarette circuit accords with the habit of a smoker, and a smoking quitter is more likely to accept it; and after a certain time period, the igniting type electronic cigarette circuit automatically stops, smoking is not allowed, and smoking quitting is facilitated.

Description

Ignition type electronic cigarette circuit

Technical field

The present invention relates to electronic cigarette field, be specifically related to a kind of ignition type electronic cigarette circuit.

Background technology

Along with people's deepening continuously to conventional cigarette recognizing dangers, electronic cigarette is more and more subject to the favor of people.Existing electronic cigarette is all generally that smoker picks up and can inhale, and also without the restriction of time, such smoker, without the habitual action of igniting, weakens the sense of reality of smoking, is also unfavorable for smoking cessation.

Summary of the invention

The problem to be solved in the present invention is to provide a kind of ignition type electronic cigarette circuit, lights a fire before this, then could smoking, and is designed by micro-controller program, automatically stops and can not smoking again after arriving certain hour, plays the effect of limitation of smoking time.Due to needs igniting, it has more met the custom of smoker, and ES more gladly accepts it.

Object of the present invention is achieved by following technical proposals: ignition type electronic cigarette mainly comprises voltage stabilizer, the inner formation such as microcontroller, driving circuit, N channel field-effect pipe, on-off circuit, LED display circuit and a heater strip containing programmable timer.Its firing circuit wakes pin up with the power down of microcontroller and is connected; Driving circuit, LED display circuit, on-off circuit are connected with the common I/O mouth of microcontroller; N channel field-effect pipe is connected with the output terminal of driving circuit.

Its principle can be illustrated by theory diagram as shown in Figure 1: when smoker needs smoking, first with burning the roasting thermistor as firing circuit, thermistor is that its resistance a kind of varies with temperature and the nonlinear resistor of marked change occurs, when microcontroller 4 end find out this cause the change of voltage because of resistance variations time, microcontroller enters normal operating conditions by power-down state immediately, and timer internal also starts timing simultaneously.If in microcontroller normal work period, point-touch switch circuit is pressed, when 7 ends of microcontroller detect close from switch the change in voltage caused time, its 6 terminal voltage changes, thus triggering driving circuit, make the conducting of N channel field-effect pipe, like this, positive source VCC has larger electric current to flow through through the field effect transistor of heater strip, low on-resistance between ground, thus heating tobacco tar forms smog, microcontroller 5 terminal voltage also changes simultaneously, and LED is luminous, and display is just in smoking; When point-touch switch circuit discharges, this change is captured equally by 7 ends of microcontroller, the change of 6 end output voltages makes driving circuit action, the cut-off of N channel field-effect pipe causes in heater strip does not have electric current, thus no longer heat, also just do not have smog to produce, now 5 terminal voltage changes make LED extinguish, and display does not have smoking.If microcontroller timing time is once arrive, microcontroller is carried out and is entered power-down state again by after the preparation of lighting a fire next time, even if now press points touch switches circuit, can not smoking LED also not work.Power supply is powered to microcontroller 2 end through voltage stabilizer, and the effect of voltage stabilizer ensures that microcontroller can not surprisingly because of the fluctuation of supply voltage trigger.

Because this electronic cigarette circuit structure is simple; Adopt and first light a fire, then the thinking of smoking could design, met the smoking habit of smoker, made ES more be ready to accept it; Arrive and automatically to stop after certain hour and can not smoking again, be conducive to ES and give up smoking.

Accompanying drawing explanation

Fig. 1 is schematic block circuit diagram of the present invention.

Fig. 2 is the present invention's specific embodiment circuit diagram, and wherein 4 ends of microcontroller U1 wake pin use up do power down, and 5,6,7 ends are made common I/O mouth and used.

Embodiment

In order to make object of the present invention, design proposal clearly understands, below in conjunction with embodiment illustrated in fig. 2, the present invention is described in more detail.

Fig. 2 is a specific embodiment of the present invention, and circuit forms totem driving circuit by C51 series monolithic as microcontroller U1, triode Q1 and Q2, N channel field-effect pipe Q3, point-touch switch circuit S1, light emitting diode D1 are display circuit, thermistor R2 forms as firing circuit and heater strip R.Wherein, 5,6,7 ends of single-chip microcomputer use as common I/O mouth, and 5 ends are connected through R5 and LED negative pole, and LED positive pole is connected with positive source; 6 ends are connected with the base stage of transistor Q1, Q2 through R1, the collector of Q1 is connected with the positive pole of power supply through R3, Q2 emitter is connected with power supply ground, the grid of field effect transistor Q3 is connected with the emitter of Q1, Q2, source electrode is connected with power supply ground, drain electrode is connected with heater strip, and the other end of heater strip is connected with positive source; 7 ends are connected with point-touch switch S1, and the other end of S1 is connected with power supply ground; Thermistor R2 and the power down of single-chip microcomputer wake pin 4 end up and are connected; Supply voltage through voltage stabilizing is powered to single-chip microcomputer 2 end.

When smoker needs smoking, first with burning roasting thermistor R2, R2 is a thermistor with negative temperature coefficient, its resistance sharply reduces with the rising of temperature, thus himself voltage also declines thereupon, when 4 ends of C51 series monolithic U1 find out this cause level to decline because of resistance variations time, U1 proceeds to normal operating conditions by power-down state immediately, and timer internal timing simultaneously starts.In single-chip microcomputer normal work period, if point-touch switch S1 is pressed, 7 ends of single-chip microcomputer U1 are made to be changed to low level, this low level can cause the change of following two aspects: one be U1 6 ends export high level, this high level adds to the base stage of Q1 and Q2 through resistance R1, because Q1 is NPN pipe, Q2 is PNP pipe, such Q1 conducting, Q2 cut-off simultaneously, power supply VCC is through resistance R3, the NPN pipe of conducting adds high level to field effect transistor Q3 grid, make Q3 conducting, like this, positive source VCC is through heater strip R, electric current is had to flow through between Q3 to ground, and Q3 is the field effect transistor of a low on-resistance, the electric current flowing through heater strip R is like this larger, thus heating tobacco tar forms smog, two is that 5 ends of U1 become low level, and namely the negative pole of light emitting diode is low level, and now D1 is luminous because obtaining electric current, shows just in smoking.In single-chip microcomputer normal work period, if point-touch switch S1 is released, 7 ends of single-chip microcomputer obtain a high level, are captured this change equally by single-chip microcomputer U1, and corresponding 6 ends export a low level, such Q1 by, Q2 conducting simultaneously, N channel field-effect pipe Q3 grid becomes low level, causes Q3 to end, cause in heater strip and do not have electric current, no longer heating tobacco tar does not just have smog to produce yet; Corresponding 5 ends export high level, and light emitting diode D1 does not have electric current to flow through and not luminous, demonstrates and does not have smoking.If the single-chip microcomputer U1 timer internal time once arrive, enter power-down state at once according to program setting, and carry out next time by the preparation of lighting a fire, during power down, even if press points touch switches S1 circuit, can not Smoke absorbing lamp also bright.

As one embodiment of the present of invention, wherein the STC15L104E single-chip microcomputer of macrocrystalline company selected by microcontroller, R2 is the thermistor of the negative temperature coefficient of glass-encapsulated 1M Ω, R1, R5 are the resistance of 1K Ω, R3, R4 are respectively the resistance of 10K Ω, 1M Ω, Q1, Q2 are that Q3 selects AO3400, and voltage stabilizer model is AMS1117-3.3V arbitrarily to pipe.

Be more than a specific embodiment of the present invention, but those of ordinary skill in the art still can make and not depart from the solution of the present invention and still fall into protection scope of the present invention.

Claims

1. an electronic cigarette circuit, mainly comprise the formation such as voltage stabilizer, microcontroller, driving circuit, N channel field-effect pipe, on-off circuit, LED display circuit and a heater strip, it is characterized in that being designed with firing circuit in circuit, described firing circuit is thermal sensing element, and this thermal sensing element wakes pin up with microcontroller power down and is connected.

2. one kind realizes the method for electronic cigarette intermittence igniting described in claim 1, microcontroller has programmable timer, after it is characterized in that lighting a fire, microcontroller is determined by its timer internal normal working hours, timing time is once arrive, and microcontroller is carried out and entered power-down state by after the preparation of lighting a fire next time.