CN105890807A - Temperature monitoring technique for heating filament of low-resistance atomizer - Google Patents

Abstract

The invention discloses a temperature monitoring technique for a heating filament of a low-resistance atomizer. The temperature monitoring technique is characterized in that a resistor R1, a resistor R2, a resistor R3 and a resistor R4 are arranged; one end of the resistor R1 is connected with the resistor R4 and a positive electrode of a power supply E; the other end of the resistor R1 is connected with the resistor R2 and a testing point A; the other end of the resistor R2 is connected with the resistor R3 and a negative electrode of the power supply E; and the other end of the resistor R3 is connected with the other end of the resistor R4 and a testing point B. According to the invention, the provided temperature monitoring technique applied to data detection in an electronic cigarette has advantages of low power consumption and accurate testing.

Description

A kind of Temperature monitoring technology of little resistance nebulizer heating wire

Technical field

The present invention relates to a kind of detection technique, the Temperature monitoring technology of a kind of little resistance nebulizer heating wire.

Background technology

The heating wire heating principle of electronic smoke atomizer be utilize electric current to be converted into heat through resistance (formula is: P=I*I*R), reaches to heat the purpose making ree-oil be atomized.In order to measure and control the interval that temperature is specified in scheme, then needing to measure the resistance that temperature is corresponding, then being converted by resistance or tabling look-up obtains the corresponding temperature of this resistance.To reach to control or measure the purpose of temperature.The generally Standard resistance range of heating wire selection itself is less, typically between 1 to 0.05 ohm, reaches accurate thermometric.The required precision measured is below 1 milliohm.Traditional method is to utilize two-wire or four line voltammetries measure, and error is bigger, it is impossible to well carry out resistance measurement.

Summary of the invention

It is an object of the invention to provide a kind of high accuracy heating wire resistance measurement utilizing bridge balance principle to realize to reach thermometric purpose method.

For achieving the above object, the present invention provides following technical scheme:

A kind of Temperature monitoring technology of little resistance nebulizer heating wire, including resistance R1, resistance R2, resistance R3 and resistance R4, one end of described resistance R1 connects resistance R4 and the positive pole of power supply E, the other end of resistance R1 connects resistance R2 and test point A, the other end of resistance R2 connects resistance R3 and the negative pole of power supply E, and the other end of resistance R3 connects the other end and test point B of resistance R4.

Preferred version as the present invention: described resistance R1 is the heating wire in electronic cigarette.

Compared with prior art, the invention has the beneficial effects as follows: the Data Detection that the Temperature monitoring technology of the present invention little resistance nebulizer heating wire is applied in electronic cigarette, there is low in energy consumption, the advantage of accurate testing.

Accompanying drawing explanation

Fig. 1 is the circuit diagram of the Temperature monitoring technology of little resistance nebulizer heating wire.

Detailed description of the invention

Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art are obtained under not making creative work premise, broadly fall into the scope of protection of the invention.

Refer to Fig. 1, in the embodiment of the present invention, a kind of Temperature monitoring technology of little resistance nebulizer heating wire, including resistance R1, resistance R2, resistance R3 and resistance R4, one end of described resistance R1 connects resistance R4 and the positive pole of power supply E, the other end of resistance R1 connects resistance R2 and test point A, and the other end of resistance R2 connects resistance R3 and the negative pole of power supply E, and the other end of resistance R3 connects the other end and test point B of resistance R4.

Resistance R1 is the heating wire in electronic cigarette.

The operation principle of the present invention is: in figure, R1 is the heating wire of electronic cigarette.When each arm resistance of electric bridge meets R₁R₃-R₂R₄I.e. R during=0 condition₁·R₃=R₂·R₄OrThen electric bridge output electric current I₀=0, voltage U₀=0, claim electric bridge to be in poised state.

If the load resistance of electric bridge is infinitely great (R_L=∞), electric bridge Open Output Voltage U can be obtained by above formula₀For

$U_o=\frac{\left(R_1{R}_3-R_2{R}_4\right)}{\left(R_1+R_2\right)\left(R_3+R_4\right)}\·E,$

If the resistance delta of each brachium pontis is respectively Δ R₁、ΔR₂、ΔR₃With Δ R₄, have

In view of R_i>>ΔR_i, ignore infinite event Δ R_iΔR_iDisregard, can obtain again

${\mathrm{\ΔU}}_o=\frac{R_1\·R_2}{{\left(R_1+R_2\right)}^2}(\frac{{\mathrm{\ΔR}}_1}{R_1}-\frac{{\mathrm{\ΔR}}_2}{R_2}+\frac{{\mathrm{\ΔR}}_3}{R_3}-\frac{{\mathrm{\ΔR}}_4}{R_4})\·E$

Arbitrary brachium pontis (assumes R₁) it is electronic smoke atomizer heating wire, other brachium pontis is fixed resistance.Sensitivity is

$K=\frac{{\mathrm{\ΔU}}_o}{{\mathrm{\ΔR}}_1}=\frac{E}{4R_1}$

The linearity is

$e_f=\frac{{\mathrm{\ΔR}}_1}{R_1+R_2}\·100\%.$

It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, and without departing from the spirit or essential characteristics of the present invention, it is possible to realize the present invention in other specific forms.Therefore, no matter from the point of view of which point, embodiment all should be regarded as exemplary, and be nonrestrictive, the scope of the present invention is limited by claims rather than described above, it is intended that all changes fallen in the implication of equivalency and scope of claim included in the present invention.Should not be considered as limiting involved claim by any reference in claim.

In addition, it is to be understood that, although this specification is been described by according to embodiment, but the most each embodiment only comprises an independent technical scheme, this narrating mode of description is only for clarity sake, description should can also be formed, through appropriately combined, other embodiments that it will be appreciated by those skilled in the art that as an entirety, the technical scheme in each embodiment by those skilled in the art.

Claims (2)

1. the Temperature monitoring technology of one kind little resistance nebulizer heating wire, including resistance R1, resistance R2, resistance R3 and resistance R4, it is characterized in that, one end of described resistance R1 connects resistance R4 and the positive pole of power supply E, the other end of resistance R1 connects resistance R2 and test point A, the other end of resistance R2 connects resistance R3 and the negative pole of power supply E, and the other end of resistance R3 connects the other end and test point B of resistance R4.

The Temperature monitoring technology of little resistance nebulizer heating wire the most according to claim 1, it is characterised in that described resistance R1 is the heating wire in electronic cigarette.