• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    This electronic cigarette (1) comprises: - a heating element (10) able to vaporize a substrate during a smoking period; means (30) for measuring an approximation (ΔU10MS (t), U10MS (t)) of a characteristic of the voltage (U10 (t)) across the heating element (10) during this period of smoking, said approximation being measured across at least one component whose intrinsic characteristics are not disturbed by inhalations; means (30) for estimating an approximation (ΔU10TH (t), U10TH (t)) of said characteristic of the voltage (U10 (t)) at the terminals of the heating element (10) in the absence inhalation during said smoking period; means (30) for calculating an intensity (F) representative of the intensity of the inhalations during said smoking period from an integration of the difference between said approximations during said smoking period; and means (30) for estimating said amount of substrate vaporized by the heating element at least from said intensity.
    公开号:FR3017954A1
    申请号:FR1451409
    申请日:2014-02-21
    公开日:2015-08-28
    发明作者:Eric Louveau；Didier Malcavet；Steve Anavi；Alexandre Prot
    申请人:SMOKIO；
    IPC主号:
    专利说明:

    [0001] BACKGROUND OF THE INVENTION The invention is in the general field of electronic cigarettes having a heating element capable of vaporizing a substrate in response to the user's inhalation, when the heating element is energized. More specifically, the invention provides a solution for estimating the amount of substrate vaporized by the heating element. Solutions are known that aim at estimating this quantity by measuring the variation of the resistivity of the heating element when the temperature of this heating element varies because of the inhalations. Unfortunately, the variation of the resistivity of the heating element is very difficult to measure so that these solutions do not make it possible to estimate the quantity of substrate vaporized accurately. OBJECT AND SUMMARY OF THE INVENTION According to a first aspect, the invention relates to a method for estimating the amount of substrate vaporized by a heating element in an electronic cigarette during a smoking period. In this document, the notion of "vaporization" is to be taken in the broad sense; it denotes the conversion of the substrate into gas, including at a temperature below 100 ° C. This method comprises: a step of measuring an approximation of a characteristic of the voltage at the terminals of the heating element during this smoking period, this approximation being measured across at least one component whose intrinsic characteristics are not disturbed by inhalations; a step of estimating an approximation of this characteristic of the voltage at the terminals of the heating element in the absence of inhalation during the smoking period; a step of calculating a representative intensity of the inhalations during the smoking period from an integration of the difference between said approximations during said smoking period; and a step of estimating the amount of substrate vaporized by the heating element from this intensity and possibly other parameters. Correspondingly, the invention relates to an electronic cigarette 5 comprising: a heating element capable of vaporizing a substrate during a smoking period, characterized in that it comprises: means for measuring an approximation of a characteristic of the voltage at the terminals of the heating element during this smoking period, this approximation being measured across at least one component whose intrinsic characteristics are not disturbed by inhalations; means for estimating an approximation of this characteristic of the voltage at the terminals of the heating element in the absence of inhalation during the smoking period; means for calculating an intensity of the inhalations during the smoking period from an integration of the difference between said approximations during said smoking period; and means for estimating said amount of substrate vaporized by the heating element from this intensity and possibly other parameters. Thus, and in general, the invention proposes to estimate the amount of substrate vaporized during a smoking period, by comparing the characteristics of the voltage across the heating element, with these characteristics in the absence inhalation. But very advantageously, the invention does not directly measure these characteristics but estimates at the terminals of a component whose intrinsic characteristics are not disturbed by inhalations. Thanks to this particularly advantageous characteristic, the invention makes it possible to estimate very reliably the intensity of these inhalations, and thus to considerably improve the estimation of the quantity of vaporized substrate. In one embodiment of the invention, the determined amount of vaporized substrate is used to estimate the amount or quality of components inhaled by the user, for example, a quantity of nicotine.
    [0002] In a first embodiment of the invention, it is estimated the variation of the voltage across the heating element. In a first embodiment of this first variant, an approximation of the variation of the voltage across the heating element is calculated from voltages measured across at least two elements, the voltages at the terminals of each of these elements. elements giving an approximation of the voltage across the heating element at moments slightly offset in time. In this embodiment of the invention, the electronic cigarette according to the invention comprises: at least two elements, the voltage across each of said elements giving an approximation of the voltage across said heating element at times slightly offset in the time, and - means for measuring an approximation of the variation of the voltage across the heating element from the voltages measured at the terminals of said elements. The invention makes it possible to follow the evolution over time of the characteristics of the voltage at the terminals of the heating element, not with the aid of a tool which would follow precisely and directly in real time this voltage, but by creating an artificial delta delay between two elements of the electronic cigarette, this delay making it possible to obtain at an instant t an estimate of the evolution of the voltage at the terminals of the heating means between the instant t-delta and the instant t. In one embodiment, these elements are serially connected series RC circuits. In a second embodiment of this first variant, the approximation of the variation of the voltage across the heating element is the time derivative of a potential difference measured across a connected measurement resistor. in series with the heating element. In a second variant embodiment of the invention, the voltage at the terminals of the heating element is estimated. In an embodiment of this second variant, the approximation of the voltage across the heating element is the voltage measured across a measurement resistor connected in series with said heating element. In this embodiment, the electronic cigarette comprises means capable of measuring a potential difference across a measurement resistor connected in series with the heating element, and means for measuring an approximation of the varying the voltage at the terminals of the heating element from said potential difference. BRIEF DESCRIPTION OF THE DRAWINGS Other features and advantages of the present invention will emerge from the description given below, with reference to the accompanying drawings which illustrate an embodiment having no limiting character. In these figures: - Figure 1 shows a first embodiment of an electronic cigarette according to the invention; FIG. 2 represents the voltage variation across different components of the electronic cigarette of FIG. 1 following an inhalation; FIG. 3 represents the theoretical difference between the output voltages of two RC circuits of FIG. 1, in the absence of inhalation; Figure 4 illustrates a method for calculating an inhalation intensity in the electronic cigarette of Figure 1; Figure 5 shows details of an electronic cigarette according to a second embodiment of the invention; FIG. 6 represents details of an electronic cigarette according to a third embodiment of the invention; Fig. 7 illustrates a method for calculating an inhalation intensity in the electronic cigarette of Fig. 6; and Figure 8 shows details of an electronic cigarette according to a fourth embodiment of the invention; FIG. 9 represents, in flowchart form, the main steps of an estimation method according to a particular embodiment of the invention.
    [0003] DETAILED DESCRIPTION OF A FIRST EMBODIMENT OF THE INVENTION We will now describe with reference to FIG. 1 a first embodiment of an electronic cigarette 1 according to the invention, in which only the electronic components used for understanding of this embodiment have been shown.
    [0004] The electronic cigarette 1 comprises a heating element 10 capable of vaporizing a substrate, the resistivity R10 (t) of this heating element being capable of varying as a function of its temperature. In this embodiment, the heating element 10 has a first unreferenced terminal connected to ground and a second terminal 10A, so that the potential U10 of this terminal corresponds to the voltage across the heating element 10. According to the invention, the electronic cigarette 1 comprises a battery 3 capable of delivering a voltage U0, and a switch 5 connected to a terminal P of the battery, for powering only when the user presses a button not shown, the heating element 10 from the battery 3. In the embodiment described here, the voltage UO has a nominal voltage of the order of 3.7V and a discharge curve in a range [4.2V, OV]. When the switch 5 is in the closed position, an electric current of intensity i passes through this switch and an electric current of intensity i10 passes through the heating element 10. In order to be able to measure the variations of the voltage U10 (t) at the terminals of the heating element 10, the electronic cigarette 1 comprises, in this embodiment, a measurement resistor R placed in series between a terminal Q of the switch 5 and the terminal A of the heating element 10. The measurement resistor is crossed by the electric current of intensity i when the switch 5 is in the closed position. The intrinsic characteristics of the measuring resistor R are not disturbed by inhalations. Due to this particular arrangement, and considering that the switch 5 is a perfect switch (that is to say without loss, so with U5 = U0), we obtain, in known manner: U10 (t) = U0 .R10 (t) / (R + R10 (t)) (1) Consequently, the variations of the resistivity R10 (t) of the heating element 10 are accompanied by a variation of the voltage U10 (t) at terminals of the heating element. FIG. 2 represents in ordinate the voltage U10 (t) at the terminals of the heating element 10 as a function of time, on which four events occurring at times t1 to t4 have been represented: t1: pressing on the closing button l 5. The voltage U10 (t) across the heating element 10 which was zero, reaches almost instantaneously a voltage very close to the voltage UO of the battery 3. From this moment ti and as long as the The user does not inhale, the temperature of the heating element 10 increases until a limiting temperature is reached, its resistivity R10 (t) increases and the voltage U10 (t) increases. t2 and t3: start and stop of inhalation. Inhalation brings a flow of cold air on the heating element 10 with the effect of lowering its temperature, reducing its resistivity R10 (t) and thus lowering the voltage U10 (t) at its terminals. Conversely, the end of the inhalation causes, if the switch 5 is kept closed, a heating of the heating element, and an increase in the voltage at its terminals. t4: release of the button and opening of the switch 5: the heating element 10 is no longer powered by the battery 3 and the voltage U10 (t) at its terminals becomes zero almost instantaneously. In this document, the term "smoking period" is the period of time between times t1 and t4, namely the period during which the user presses the button controlling the switch 5 in the closed position. During this period, the user may not be able to inhale or inhale one or more puffs. In this first particular embodiment of the invention, the quantity of substrate vaporized during a smoking period is estimated by comparing a measurement AU10mEs (t) of an approximation of the variation of the voltage U10 (t) across the heating element 10 during this smoking period with a theoretical estimate AU1OTH (t) of this approximation of this voltage variation in the absence of any inhalation during the smoking period.
    [0005] More precisely, in this embodiment of the invention, the difference between two voltages U11 (t) and U12 (t) is chosen as the approximation of the voltage variation at the instant t at the terminals of the heating element 10. ) measured across two separate circuits 11, 12 and of the same type, the voltages U11 (t) and U12 (t) across these two circuits being approximations of the voltage U10 (t) across the heating element 10 at two moments slightly offset in time. In the embodiment described here, use is made of two series RC circuits 11, 12 placed in series between the heating element 10 and calculation means 30 able to calculate the difference between the voltages U11 (t) and U12 (t). . In the embodiment described here, the voltages U11 (t) and U12 (t) are the potentials of points B and C shown in FIG. 1. The time constant T12 of the second RC circuit 12 is chosen to be much greater than that of T11. of the first RC circuit 11, for example by a factor of 100. In the embodiment described herein, a gain amplifier G is used to amplify the difference AU10 (t) between U11 (t) and U12 (t). In the embodiment described here, the resistors R11 and R12 of the RC circuits 11 and 12 are negligible with respect to the impedance of the amplifier 20. Therefore, AU10 (t) = G. (U12 (t) - U11 (t)) In the embodiment described here: - the gain G is chosen in the range [100; 10000], for example equal to 25 500; the difference U12 (t) -U11 (t) is of the order of a few tens of microvolts; and AU10 (t) is of the order of a few tens or even hundreds of microvolts and measurable by the calculation means 30. FIG. 2 also shows the output voltages U11 (t) and U12 (t) of the RC circuits series 11 and 12. As explained above, when the user presses the button at time t1, the heating element 10 is powered and the voltage U10 (t) at its terminals increases. The two capacitors C11, C12 of the RC circuits 11, 12 are charged, the second and largest capacity C12 being delayed with respect to the first and smaller capacity C11. Therefore, between pressing the button (t1) and the start of inhalation (t2), U12 (t) <U11 (t) <U10 (t) is observed. When the user begins to inhale at time t2, the heating element 10 cools and the voltage U10 (t) at its terminals decreases. The second and largest capacity C12 is lagging behind the first and smaller capacity C11. During the entire duration of the inhalation, ie between t2 and t3, U12 (t)> U11 (t)> U10 (t) is observed. When the user stops inhaling at time t3, the heating element 10 heats up and the voltage U10 (t) at its terminals increases. We then find the situation in which U12 (t) <U11 (t) <U10 (t). Shortly after the user releases the button at time t4, the voltage U10 (t) becomes zero, the capacitors C11 and C12 discharge and their output voltages U11 (t), U12 (t) become zero again. In a known manner, when a constant voltage is applied across a capacitor, a transient regime is distinguished during which the capacitor progressively charges until it reaches a limit load depending on its value and a steady state during which the load capacity remains at this limit value as long as we continue to apply this constant voltage.
    [0006] Figure 2 corresponds to the situation in which the user begins to inhale (time t2) in steady state. Those skilled in the art will understand that if the user began to inhale during the transient regime, the large capacitance C12 not being fully charged, the output voltage U12 (t) of the second capacitor would not necessarily become greater than the voltage output U11 (t) of the first capacitance. In the embodiment described here, the system formed by the two circuits 11 and 12 is in a transient state for about 800 ms after the instant t1 at which the user presses the button.
    [0007] FIG. 3, which represents the difference AU1OTH (t) between the output voltages U11 (t) and U12 (t) of the two RC circuits 11, 12 in the absence of inhalation, in other words a theoretical approximation of the variation the voltage U10 (t) across the heating element 10 at time t, illustrates these different regimes.
    [0008] During the transient regime, U12 (t) is always lower than U11 (t) but as shown in Figure 2 the absolute value of the difference between these two voltages increases and then decreases until reaching a constant value a in steady state. In the embodiment described here, this constant α may be neglected and assumed to be zero thereafter.
    [0009] Under transient conditions, and noting: - R11, the resistance of the first RC series 11 circuit; C11, the capacity of the first RC series 11 circuit; - R12, the resistance of the second series RC circuit 12; - C12, the capacity of the second RC circuit series 12; - T11 the time constant R1.C1 of the first RC circuit series 11; and T12 the time constant R2.C2 of the second series RC circuit 12; we obtain, theoretically: U11TH (t) = U10 (t). (1 - exp (-t / T11)) U12TH (t) = U11TH (t). (1 - exp (-t / T12)) either U12TH (t) = U10 (t). (1 - exp (-t / T11)). (1 - exp (-t / T12)) Therefore, the theoretical variation AU1OTH (t) of the voltage across the heating element 10 is expressed: AU1OTH (t) = G. (U11TH (t) - U12TH (t)) or AU1OTH (t) = G.U10 (t). (1 - exp (-t / T11)) (exp (-t / T12)) or with (1) AU1OTH (t) = G. [UO.R10 (t) / (R + R10 (t))]. (1 - exp (-t / T11 )). (exp (-t / T12)) By making the approximation that R10 (t) is constant during the smoking period and equal to R10 (t1), we finally obtain the expression of AU1OTH (t) - in transient regime: AU1OTH (t) = G. [UO.R10 (t1) / (R + R10 (t1))]. (1- exp (-t / T11)). (exp (-t / T12)) ( 2) - in steady state: AU1OTH (t) = a = 0. In the embodiment of FIG. 1, the approximation oU10MES (t) of the variation of the voltage U10 (t) at the terminals of the heating element 10 is the output voltage of the amplification means 20, namely the potential of the terminal 9.
    [0010] In the embodiment described here, the amount of substrate vaporized during a smoking period is estimated from an inhalation intensity F calculated by integration of the difference during a smoking period, between the approximation AU10mEs (t) the variation of the voltage U10 (t) across the heating element 10 during this smoking period and the theoretical AU1OTH (t) estimate of this approximation of this voltage variation in the absence of any inhalation during the smoking period. This inhalation intensity F corresponds, in the exemplary embodiment described here, to the hatched area. FIG. 4. This area may in particular be calculated by a Riemann sum with a step of 20 ms between the instants t2 and t4. In the embodiment described here, t2 is determined as being the moment when the absolute value of the difference AU10mEs (t) and AU1OTH (t) becomes greater than a predetermined threshold ST2: til lAomEsn-2) - AHlo (1 -7) I> The moment t4 is the moment when the user releases the button. To calculate the inhalation intensity F by the Riemann method, AU10mEs (t) and AU1OTH (t) are evaluated and stored at different times between t1 and t4, for example every 20ms. In this embodiment: 1. AU10mEs (t) is the measurement of the potential of the terminal 9 at time t 2. AU1OTH (t) between t1 and t1 + 800ms (transient regime) is read in a record of a first database BD1 constructed during preliminary tests performed in the laboratory and stored in the electronic cigarette 1, the recording being selected according to the parameters of equation (2). 3. AU1OTH (t) = Back to equation (2), the expression of AU1OTH (t) under transient conditions depends on six parameters, namely: the gain G of the amplifier 20; the voltage UO delivered by the battery 3; the resistivity R10 (t1) of the heating element assumed to be constant; the value of the measuring resistor R; The time constants T11 and T12 of the RC circuits 11 and 12 0, between t1 + 800 ms and t4 (steady state). In the embodiment described here, and returning to FIG. 1, the calculation means 30 are capable of measuring the voltage UO at the terminal P of the battery 3 by means of a voltage probe 6. In the embodiment described here, the calculation means 30 are also able to estimate the resistivity R10 (t1) of the 'heating element. For this, the calculation means 30 measure, at time t1, the voltages U5 at the terminal Q of the switch 5 by means of a voltage probe 7 and the voltage U10 at the terminal A of the heating element 10 by means of a voltage probe 8.
    [0011] By noting i the intensity of the electronic current which crosses the resistor R, we obtain by application of the law nodes at the terminal A, and the Ohm's law at the resistance R, we obtain il + 110 = (U5 - U10) / R. However, in the embodiment described here, it is negligible in front of i10. Therefore, by applying Ohm's law to the heating element 10: R10 = R.U10 / (U5-U10) (3) In the embodiment of the invention described here, the first database BD1 stores, for a plurality of six-tuples corresponding to the 6 parameters {G, U0, R10, R, T11, T12}, values of the theoretical voltage AU1OTH (t) in the absence of inhalation and in a transient state at different times t counted between t1 and t1 + 800ms. The calculation means are therefore able to calculate the inhalation intensity F by the Riemann method. In the embodiment described here, the computing means 30 interrogates a second database BD2 of the electronic cigarette 1 to determine the amount of substrate vaporized during the smoking period according to four parameters: time t4-tl of the smoking period; - UO voltage of the battery 3 measured by the calculation means 30; - resistance R10 (t1) of the heating element 10, assumed constant during a smoking period, and measured by the calculation means 30; and inhalation intensity F, calculated here by the Riemann method. As a variant, other parameters may also be used, in particular the temperature of the heating element 10 to 11, the viscosity of the substrate, the evaporation rate of the substrate and the transfer function of the heating element 10 characterizing its cooling. , the density of vaporized substrate drops as a function of the inhalation intensity F. In the embodiment described here, the voltage UO of the battery 3 is measured by the calculation means 30. As a variant, this voltage could be considered constant and equal to the nominal value of the battery. DESCRIPTION OF A SECOND EMBODIMENT OF THE INVENTION In the embodiment of FIG. 1, two serial RC circuits 11, 12 in series and an amplifier 20 are used to estimate the voltage variation AU10 (t) across the terminals of FIG. As a variant, and as shown in FIG. 5, it is possible, for example, to use three RC circuits and two amplifiers 201, 202.
    [0012] This embodiment makes it possible to improve the estimation of the voltage variations across the heating element 10, in particular during the transient regime. Description of a Third Embodiment of the Invention In the embodiment of FIG. 6, the magnitude of the voltage at the terminals of the heating element that is estimated is not the variation AU10 (t) of this voltage but the value U10 (t) of this voltage itself. In this embodiment of the invention, this value U10 (t) is estimated by measuring the voltage U5-U10 across the measuring resistor R. By taking up equation (3): U10 (t) ) = R10 / R (U5-U10) (t) (4) This embodiment requires to connect computing means 30 across the measuring resistor R to accurately measure the variations of U5-U10. FIG. 7 represents: - the approximation U10mEs (t) of the voltage U10 (t) across the heating element 10 during the smoking period, calculated using equation (4), the difference of (U5 U10) (t) being the difference of potentials measured by the calculation means 30 of FIG. 6 between the points Q and A, the estimation of the approximation U1OTFi (t) at the terminals of the heating element 10 the absence of inhalation during said smoking period, - the intensity F of the inhalation corresponding to the integration of the difference between U10mEs (t) and U1OTH (t) during the smoking period. Description of a fourth embodiment of the invention In a fourth embodiment shown in FIG. 8, to estimate the variation 3, UmEs10 (t) of the voltage at the terminals of the heating element 10, it is carried out, as for the first embodiment, the difference between two voltages U12 (t) and U11 (t), each of these voltages giving an approximation of the voltage across the heating element (10) at moments slightly offset in time . In this embodiment, a delay line 90 is used to generate this delay between the measurement points of the voltages U11 (t) and U12 (t). This delay line may for example be constituted by: a large capacity; an analogue digital converter coupled to a digital analog converter. The intrinsic characteristics of the delay line 90 are not disturbed by inhalations. Description of a fifth embodiment of the invention In a fourth embodiment of the invention, it is also possible to estimate the variation AUmEs10 (t) of the voltage across the heating element 10, by calculating the derivative by compared to the time of the measured voltage U10mEs (t), as in the third embodiment, with the calculation means 30 of FIG. 6 between points Q and A. This value can be compared with the theoretical variation AUTFi10 (t) the voltage across the heating element 10 in the absence of inhalation, as in the first embodiment.
    [0013] FIG. 9 represents in the form of a flowchart a method for estimating the quantity of vaporized substrate according to a particular embodiment of the invention. This method may for example be implemented by the computing means 30 of the electronic cigarette of FIG. 1. During a step E10, the calculation means 30 detect the pressing of the button causing the closure of the switch 5. The instant t1 of this detection is stored in memory. During a step E20, just after this detection, the calculation means 30 measure the voltage UO delivered by the battery 3 and the resistivity R10 (t1) of the heating element. Every 20 ms, during a step E30, until the moment t4 of detecting the release of the button causing the opening of the switch 5, the calculation means 30: - measure AU10mEs (t) (potential from marker 9); estimate AU10-rFi (t) by reading the first database BD1 between t1 and t1 + 800ms. Between t1 + 800rns and t4, they estimate AU10-ni (t) = 0. During a step E40, the calculation means 30 estimate the instant t2 of the beginning of the puff, this moment being the first moment> after t1 such that lAU10mEs (t2) - 11 -T2. (t7) I> During a step E50, the calculation means 30 calculate the intensity F of the inhalation as the integration of the difference between AU10mEs (t) and AU10-rFi (t) between t2 and t4 .
    [0014] During a step E60, the computing means 30 estimate the amount of substrate vaporized between t2 and t4 by interrogating the second database B2.
    权利要求:
    Claims (10)
    [0001]
    REVENDICATIONS1. Method for estimating the amount of substrate vaporized by a heating element (10) in an electronic cigarette (1) during a smoking period, characterized in that it comprises: - a step (E30) for measuring an approximation (AU10mEs (t), U 10mEs (t)) of a characteristic of the voltage (U10 (t)) at the terminals of the heating element (10) during this smoking period, said approximation being measured at the terminals of minus a component whose intrinsic characteristics are not disturbed by inhalations; a step (E30) for estimating an approximation (AU10-ni (t), U1OTH (0) of said characteristic of the voltage (U10 (t)) across the heating element (10) absence of inhalation during said smoking period; a step (E50) of calculating an intensity (F) of the inhalations during said smoking period from an integration of the difference between said approximations during said smoking period; and a step (E60) of estimating said amount of substrate vaporized by the heating element at least from said intensity.
    [0002]
    2. An estimation method according to claim 1, characterized in that the characteristic of said voltage (U10 (t)) at a given instant is a variation (AU10 (t)) of said voltage at this instant.
    [0003]
    3. Estimation method according to claim 2, characterized in that the approximation (AU10mEs (t)) of the variation of the voltage (U10 (t)) at the terminals of the heating element is calculated from voltages ( U12 (t), 30 U11 (t)) measured across at least two elements, the voltages across each of said elements giving an approximation of the voltage across said heating element (10) at times slightly offset in the time.
    [0004]
    4. Estimation method according to claim 3, characterized in that said elements (11, 12) are serial RC circuits connected in series.
    [0005]
    5. Estimation method according to claim 2, characterized in that the approximation (AU10mEs (t)) of the variation of the voltage (U10 (t)) at the terminals of the heating element is the derivative with respect to time. a potential difference measured across a measuring resistor (R) connected in series with said heating element (10).
    [0006]
    6. Estimation method according to claim 1, characterized in that the approximation of the voltage (U10 (t)) at the terminals of the heating element is the voltage measured at the terminals of a connected measuring resistor (R). in series with said heating element (10).
    [0007]
    7. Electronic cigarette (1) comprising a heating element (10) capable of vaporizing a substrate during a smoking period, characterized in that it comprises: - means (30) for measuring an approximation (AU10mEs (t) , UlOmEs (t)) of a characteristic of the voltage (U10 (t)) at the terminals of the heating element (10) during this smoking period, said approximation being measured across at least one component whose characteristics intrinsic effects are not disturbed by inhalations; means (30) for estimating an approximation (AU1OTH (t), U101-Fi (t)) of said characteristic of the voltage (U10 (t)) at the terminals of the heating element (10), no inhalation during said smoking period; means (30) for calculating an intensity (F) of inhalations during said smoking period from an integration of the difference between said approximations during said smoking period; and means (30) for estimating said amount of substrate vaporized by the heating element at least from said intensity.
    [0008]
    8. Electronic cigarette according to claim 7, characterized in that it comprises: at least two elements, the voltage across each of said elements giving an approximation of the voltage across said heating element (10) at times slightly shifted in time, and - means for measuring an approximation (3, U10mEs (t)) of the variation of the voltage (U10 (t)) across the heating element from the voltages (U12 (t), U11 (t)) measured at the terminals of said elements.
    [0009]
    9. Electronic cigarette according to claim 8, characterized in that said circuits (11, 12) are serial RC circuits connected in series.
    [0010]
    10. Electronic cigarette according to claim 6, characterized in that it comprises calculation means (30) able to measure a potential difference across a measuring resistor (R) connected in series with the heating element ( 10), and means for measuring an approximation (U10mEs (t)) of the variation of the voltage (U10 (t)) across the heating element from said potential difference.
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    US20190342948A1|2019-11-07|
    EA033794B1|2019-11-26|
    EA201992014A1|2020-01-27|
    CN111938209A|2020-11-17|
    US10383174B2|2019-08-13|
    EP3108223A1|2016-12-28|
    EA201691654A1|2017-01-30|
    JP2017506897A|2017-03-16|
    FR3017954B1|2016-12-02|
    US20170019951A1|2017-01-19|
    EA201992013A1|2020-01-24|
    JP6389265B2|2018-09-12|
    KR20160122803A|2016-10-24|
    EA038759B1|2021-10-15|
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    法律状态:
    2015-01-22| PLFP| Fee payment|Year of fee payment: 2 |
    2016-02-18| PLFP| Fee payment|Year of fee payment: 3 |
    2016-07-29| CD| Change of name or company name|Owner name: JT INTERNATIONAL SA, CH Effective date: 20160623 |
    2016-08-05| TP| Transmission of property|Owner name: JT INTERNATIONAL SA, CH Effective date: 20160629 |
    2017-02-17| PLFP| Fee payment|Year of fee payment: 4 |
    2018-02-23| PLFP| Fee payment|Year of fee payment: 5 |
    2020-02-19| PLFP| Fee payment|Year of fee payment: 7 |
    2021-02-24| PLFP| Fee payment|Year of fee payment: 8 |
    2022-02-16| PLFP| Fee payment|Year of fee payment: 9 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1451409A|FR3017954B1|2014-02-21|2014-02-21|ELECTRONIC CIGARETTE|FR1451409A| FR3017954B1|2014-02-21|2014-02-21|ELECTRONIC CIGARETTE|
    US15/120,710| US10383174B2|2014-02-21|2015-02-20|Electronic cigarette|
    EA201992013A| EA038777B1|2014-02-21|2015-02-20|Electronic cigarette|
    PCT/FR2015/050416| WO2015124878A1|2014-02-21|2015-02-20|Electronic cigarette|
    KR1020167025323A| KR101868727B1|2014-02-21|2015-02-20|Electronic cigarette|
    CN202010996799.XA| CN111938209A|2014-02-21|2015-02-20|Electronic cigarette|
    CN201580020794.0A| CN106461589B|2014-02-21|2015-02-20|Electronic cigarette|
    JP2016553494A| JP6389265B2|2014-02-21|2015-02-20|Electronic Cigarette|
    EA201691654A| EA033794B1|2014-02-21|2015-02-20|Electronic cigarette|
    EA201992014A| EA038759B1|2014-02-21|2015-02-20|Electronic cigarette|
    EP15709290.9A| EP3108223A1|2014-02-21|2015-02-20|Electronic cigarette|
    US16/515,787| US20190342948A1|2014-02-21|2019-07-18|Electronic Cigarette|
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