CN111307654A - Method for measuring absorption resistance humidity and atmospheric pressure compensation of absorption resistance standard rod - Google Patents
Method for measuring absorption resistance humidity and atmospheric pressure compensation of absorption resistance standard rod Download PDFInfo
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Abstract
The invention discloses a method for measuring the compensation of the suction resistance humidity and atmospheric pressure of a suction resistance standard rod, which comprises the following steps: measuring the humidity H of each suction resistance standard rod at different preset humiditynAnd different preset atmospheric pressure PmObtaining the actually measured environment humidity H by the lower suction resistancen′And measured ambient atmospheric pressure Pm′(ii) a Obtaining a relation function between a suction resistance parameter P (x) and the ambient humidity H and a relation function between a suction resistance parameter P (y) and the ambient atmospheric pressure P; obtaining a suction resistance correction coefficient k of a first suction resistance standard rodhAnd a second suction resistance standard rod suction resistance correction coefficient kP(ii) a Acquiring a suction resistance correction coefficient k of a suction resistance standard rod; measuring the suction resistance P of a single suction resistance standard rodxObtaining real-time environmental humidity HAAnd real-time ambient atmospheric pressure PA(ii) a Calculating the suction resistance correction value P of the first suction resistance standard bars1And a second resistance-suction standard rod resistance-suction correction value Ps2(ii) a Obtaining a suction resistance correction value P of a suction resistance standard rods. The method effectively eliminates the influence of humidity and atmospheric pressure on the suction resistance measurement accuracy of the suction resistance standard rod, and has the advantages ofStrong real-time performance and high accuracy.
Description
Technical Field
The invention relates to the field of cigarette resistance measurement, in particular to a method for measuring the resistance of a resistance standard rod by compensating the resistance humidity and atmospheric pressure.
Background
The smoke resistance is an important physical property index of the cigarette, is directly related to sensory quality and mainstream smoke release amount, and is a key parameter strictly controlled in the cigarette production process.
The suction resistance standard rod is a standard component matched with the cigarette physical property comprehensive test platform and is used for calibrating the cigarette physical property comprehensive test platform to realize accurate measurement of a suction resistance value. The standard stick of the resistance absorption is made of chemical inert materials and is verified and assigned under the standard conditions that the relative humidity is 60 percent and the atmospheric pressure is 10133 Pa. The surface of the existing suction resistance standard rod is a frosted surface or a smooth surface, and is easily influenced by the ambient humidity and the atmospheric pressure when the suction resistance value of the suction resistance standard rod is detected.
The suction resistance standard rod and the filter stick physical property comprehensive test platform are generally stored in two occasions of a physical detection laboratory and a rolling and receiving packaging workshop, and the humidity and the atmospheric pressure of the suction resistance standard rod during suction resistance detection in the laboratory and the rolling and receiving packaging workshop are inconsistent, so that the calibration result of the cigarette physical property comprehensive test platform is influenced, and the accurate measurement of the cigarette suction resistance value is influenced.
Therefore, how to provide a method capable of effectively eliminating the influence of humidity and atmospheric pressure on the accuracy of the resistance measurement of the resistance standard rod becomes a technical problem to be solved urgently in the field.
Disclosure of Invention
The invention aims to provide a new technical scheme of a method for compensating and measuring the suction resistance humidity and atmospheric pressure of a suction resistance standard rod, which can effectively eliminate the influence of the humidity and the atmospheric pressure on the measurement accuracy of the suction resistance standard rod.
The invention provides a method for measuring the compensation of the absorption resistance humidity and atmospheric pressure of an absorption resistance standard rod, which comprises the following steps:
adjusting the humidity of the environment, when the humidity of the environment reaches a preset humidity HnThen, the absorption and resistance standard rods are put into the absorption and resistance standard rod group to be balanced for a period of time, and each absorption and resistance standard rod of the absorption and resistance standard rod group is at a preset humidity HnSucking for a period of time, gradually increasing the sucked flow from 0 and keeping the sucked flow at 17.5mL/s, and then measuring the preset humidity H of each suction resistance standard rod of the suction resistance standard rod groupnThe suction resistance is measured for M times, and the actually measured environmental humidity H during the measurement of the suction resistance is obtainedn′Wherein n is a natural number greater than or equal to 1, and the preset humidity H is increased gradually with the increase of nnGradually increasing, wherein the suction resistance standard rod group comprises N suction resistance standard rods with different capillary tube apertures;
adjusting the atmospheric pressure of the environment, when the atmospheric pressure of the environment reaches the preset atmospheric pressure PmThen, the absorption resistance standard rod group is put in for balancing for a period of time, and each absorption resistance standard rod of the absorption resistance standard rod group is at the preset atmospheric pressure PmPumping for a period of time, gradually increasing the pumped flow from 0 and keeping the pumped flow at 17.5mL/s, and then measuring the pressure P of each resistance suction standard rod of the resistance suction standard rod group at different preset atmospheric pressuresmThe suction resistance is measured for Q times, and the actual measurement environment atmospheric pressure P is obtained when the suction resistance is measuredm′Wherein m is a natural number greater than or equal to 1, and the preset atmospheric pressure P is increased gradually with the increase of mmGradually increasing, wherein the suction resistance standard rod group comprises N suction resistance standard rods with different capillary tube apertures;
according to different actually measured environmental humidity Hn′The next measured suction resistance parameter P (x) of the suction resistance standard rod set is obtained to obtain the relation function of the suction resistance parameter P (x) of the suction resistance standard rod set and the environmental humidity H, and the atmospheric pressure P of the environment is measured according to different actual measurement conditionsm′Measuring the suction resistance parameter P (y) of the suction resistance standard rod group to obtain a relation function of the suction resistance parameter P (y) of the suction resistance standard rod group and the environmental atmospheric pressure P;
obtaining a first suction resistance standard rod suction resistance correction coefficient k by a relation function of a suction resistance parameter P (x) of the suction resistance standard rod group and the ambient humidity HhAnd obtaining a second suction resistance standard rod suction resistance correction coefficient k by a relation function of the suction resistance parameter P (y) of the suction resistance standard rod group and the ambient atmospheric pressure PP；
The suction resistance correction coefficient k of the first suction resistance standard barhAnd a second suction resistance standard rod suction resistance correction coefficient kPAcquiring a suction resistance correction coefficient k of a suction resistance standard rod;
measuring the suction resistance P of a single suction resistance standard rodxAnd obtaining the measured resistance to draw PxReal-time ambient humidity HAAnd real-time ambient atmospheric pressure PA；
According to Ps1＝k×(HA-60)+PxOr Ps1＝Px{1+[k×(HA-60)/100]Calculating to obtain a suction resistance correction value P of the first suction resistance standard rods1And according to Ps2＝k×(PA-10133)+PxOr Ps2＝Px{1+[k×(PA-10133)/100]Calculating to obtain a suction resistance correction value P of a second suction resistance standard rods2；
The suction resistance correction value P of the first suction resistance standard bars1And a second suction resistance standard rod suction resistance correction value Ps2Obtaining a suction resistance correction value P of a suction resistance standard rods。
Optionally, H1At 54%, with increasing n, a preset humidity HnThe step size is increased to 60%;
P19500Pa, with increasing m, presetting atmospheric pressure PmThe equal step is increased, and the maximum preset atmospheric pressure is less than 10133 Pa.
Optionally, the upper limit of n is 6, and H1At 54%, preset humidity HnStep size of the change of (2);
the upper limit of m is 3, and P19500Pa, a predetermined atmospheric pressure PmThe step size of the change of (1) is 2000.
Optionally, M and Q are both 5.
Optionally, the measured ambient humidity H is measured according to different valuesn′The next measured suction resistance parameter P (x) of the suction resistance standard rod set is obtained to obtain the relation function of the suction resistance parameter P (x) of the suction resistance standard rod set and the environmental humidity H, and the atmospheric pressure P of the environment is measured according to different actual measurement conditionsm′The following measured suction resistance parameters P (y) of the suction resistance standard rod set are obtained to obtain a relation function of the suction resistance parameters P (y) of the suction resistance standard rod set and the ambient atmospheric pressure P, wherein the relation function is as follows:
calculating different actually measured environmental humidity H according to the measured suction resistancen′The average value of the suction resistance values P (a) of the suction resistance standard rods of the lower suction resistance standard rod group and the calculation of the atmospheric pressure P of different measured environmentsm′The average value of the suction resistance values P (b) of the suction resistance standard rods of the lower suction resistance standard rod group;
average value of the suction resistance values P (a) of the suction resistance standard rods of the suction resistance standard rod group and actually measured ambient humidity Hn′Linear fitting is carried out to obtain a relation function P (a) k of the resistance value of the resistance absorption standard rod group and the ambient humidity HhH+b1And each resistance-absorbing mark of resistance-absorbing standard rod groupAverage value of absorption resistance values P (b) of quasi-rods and actually measured ambient atmospheric pressure Pm′Linear fitting is carried out to obtain a relation function P (b) k of the resistance value of the resistance absorption standard rod group and the ambient atmospheric pressure PpP+b2Wherein b is1And b2Are all constants.
Optionally, according to Ps1＝k×(HA-60)+PxCalculating to obtain a suction resistance correction value P of the first suction resistance standard rods1And according to Ps2＝k×(PA-10133)+PxCalculating to obtain a suction resistance correction value P of a second suction resistance standard rods2。
Optionally, the measured ambient humidity H is measured according to different valuesn′The next measured suction resistance parameter P (x) of the suction resistance standard rod set is obtained to obtain the relation function of the suction resistance parameter P (x) of the suction resistance standard rod set and the environmental humidity H, and the atmospheric pressure P of the environment is measured according to different actual measurement conditionsm′The following measured suction resistance parameters P (y) of the suction resistance standard rod set are obtained to obtain a relation function of the suction resistance parameters P (y) of the suction resistance standard rod set and the ambient atmospheric pressure P, wherein the relation function is as follows:
calculating different actually measured environmental humidity H according to the measured suction resistancen′The average value of the suction resistance change rate P (c) of each suction resistance standard rod of the lower suction resistance standard rod group and the calculation of the atmospheric pressure P (c) of different actual measurement environmentsm′The average value of the suction resistance change rate P (d) of each suction resistance standard rod of the lower suction resistance standard rod group;
average value of suction resistance change rate P (c) of each suction resistance standard rod of suction resistance standard rod group and actually measured ambient humidity Hn′Linear fitting is carried out to obtain a relation function P (c) k of the suction resistance change rate of the suction resistance standard rod group and the environmental humidity HhH-b3And the average value of the suction resistance change rate P (d) of each suction resistance standard rod of the suction resistance standard rod group and the actually measured ambient atmospheric pressure Pm′Linear fitting is carried out to obtain a relation function P (d) k of the suction resistance change rate of the suction resistance standard rod group and the ambient atmospheric pressure PpP-b4Wherein b is3And b4Are all constants.
Optionally, according to Ps1＝Px{1+[k×(HA-60)/100]Calculating to obtain the suction resistance correction of the first suction resistance standard rodValue Ps1And according to Ps2＝Px{1+[k×(PA-10133)/100]Calculating to obtain a suction resistance correction value P of a second suction resistance standard rods2。
Optionally, the suction resistance correction coefficient k of the first suction resistance standard rodhAnd a second suction resistance standard rod suction resistance correction coefficient kPThe method comprises the following specific steps of obtaining a suction resistance correction coefficient k of a suction resistance standard rod:
calculating the suction resistance correction coefficient k of the first suction resistance standard rodhAnd a second suction resistance standard rod suction resistance correction coefficient kPThe average value is the suction resistance correction coefficient k of the suction resistance standard rod.
Optionally, the suction resistance correction value P of the first suction resistance standard bars1And a second suction resistance standard rod suction resistance correction value Ps2Obtaining a suction resistance correction value P of a suction resistance standard rodsThe method comprises the following specific steps:
calculating the suction resistance correction value P of the first suction resistance standard bars1And a second suction resistance standard rod suction resistance correction value Ps2Is the average value of the suction resistance correction value P of the suction resistance standard rods。
According to the method for compensating and determining the suction resistance humidity and the atmospheric pressure of the suction resistance standard rod, the determined suction resistance value of the suction resistance standard rod is compensated and corrected according to the environment humidity and the atmospheric pressure determined by the suction resistance of the suction resistance standard rod, the influence of the humidity and the atmospheric pressure on the suction resistance measurement accuracy of the suction resistance standard rod is effectively eliminated, and the method has the advantages of being strong in real-time performance and high in accuracy.
Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.
FIG. 1 is a schematic flow chart of the method for measuring the humidity and atmospheric pressure compensation of the suction resistance standard rod according to the present disclosure.
Detailed Description
Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.
As shown in fig. 1, the method for measuring the humidity and atmospheric pressure compensation of the suction resistance standard rod of the present disclosure includes the following steps:
step S1: adjusting the humidity of the environment, when the humidity of the environment reaches a preset humidity HnThen, the absorption and resistance standard rods are put into the absorption and resistance standard rod group to be balanced for a period of time, and each absorption and resistance standard rod of the absorption and resistance standard rod group is at a preset humidity HnThe suction is carried out for a period of time, and the flow rate of the suction is gradually increased from 0 and is kept at 17.5 mL/s. The pumping time and the pumping flow rate can be flexibly selected according to actual requirements. After the flow rate of the suction to the suction resistance standard rod is gradually increased from 0 to 17.5mL/s, the suction to the suction resistance standard rod is continuously performed at the suction flow rate of 17.5mL/s, and then the suction resistance of the suction resistance standard rod is measured. The operation can effectively avoid the influence of the gas trapped in the capillary hole of the resistance absorption standard rod on the resistance absorption measurement, and is favorable for improving the accuracy of the resistance absorption measurement of the resistance absorption standard rod.
Then measuring the different preset humidity H of each suction resistance standard rod of the suction resistance standard rod groupnThe suction resistance is measured for M times, and the actually measured environmental humidity H during the measurement of the suction resistance is obtainedn′. Wherein n is a natural number greater than or equal to 1, and the preset humidity H is increased gradually with the increase of nnThe increase gradually, the suction resistance standard rod group comprises N suction resistance standard rods with different capillary tube apertures. The above-mentioned equilibration time is typically 12 h.
The suction resistance standard rod group comprises N suction resistance standard rods with different capillary tube apertures. The number of the suction resistance standard rods in the suction resistance standard rod group can be flexibly selected according to actual requirements. For example, N is 4. The standard rod for suction resistance used in the present disclosure is a cylindrical structure having a capillary hole extending in the axial direction of the cylinder between both end faces of the cylinder. The resistance-wicking value of the resistance-wicking standard rod is related to the diameter of the capillary hole (i.e., capillary pore diameter).
In specific implementation, the preset humidity HnMay be less than the standard temperature, e.g. H1The content was 54%. With increasing n, the preset humidity HnThe step size is increased to 60%, or the step size is flexibly set according to actual requirements.
The capillary aperture of each resistance absorption standard rod of the resistance absorption standard rod group can enable the resistance absorption of each resistance absorption standard rod to be changed in the trend of arithmetic progression. For example, the suction resistances of the respective suction resistance standard rods of the suction resistance standard rod group are 1kPa, 2kPa, 3kPa and 4kPa, respectively.
In order to ensure the accuracy of the measured resistance value of the standard stick, the upper limit of n is set to 6, and H1At 54%, preset humidity HnThe step size of the change of (2) is set to 2.
Step S2: adjusting the atmospheric pressure of the environment, when the atmospheric pressure of the environment reaches the preset atmospheric pressure PmThen, the absorption resistance standard rod group is put in for balancing for a period of time, and each absorption resistance standard rod of the absorption resistance standard rod group is at the preset atmospheric pressure PmThe suction is carried out for a period of time, and the flow rate of the suction is gradually increased from 0 and is kept at 17.5 mL/s. The pumping time and the pumping flow rate can be flexibly selected according to actual requirements. After the flow rate of the suction to the suction resistance standard rod is gradually increased from 0 to 17.5mL/s, the suction to the suction resistance standard rod is continuously performed at the suction flow rate of 17.5mL/s, and then the suction resistance of the suction resistance standard rod is measured. The operation can effectively avoid the influence of the gas trapped in the capillary hole of the suction resistance standard rod on the suction resistance measurement, and is favorable for improving the suction resistance of the suction resistance standard rodThe accuracy of the assay.
Then measuring the pressure P of each suction resistance standard rod of the suction resistance standard rod group at different preset atmospheric pressuresmThe suction resistance is measured for Q times, and the actual measurement environment atmospheric pressure P is obtained when the suction resistance is measuredm′. Wherein m is a natural number greater than or equal to 1, and the preset atmospheric pressure P is increased gradually with the increase of mmThe increase gradually, the suction resistance standard rod group comprises N suction resistance standard rods with different capillary tube apertures. The above-mentioned equilibration time is typically 12 h.
The suction resistance standard rod group comprises N suction resistance standard rods with different capillary tube apertures. The number of the suction resistance standard rods in the suction resistance standard rod group can be flexibly selected according to actual requirements. For example, N is 4. The standard rod for suction resistance used in the present disclosure is a cylindrical structure having a capillary hole extending in the axial direction of the cylinder between both end faces of the cylinder. The resistance-wicking value of the resistance-wicking standard rod is related to the diameter of the capillary hole (i.e., capillary pore diameter).
Here, different predetermined atmospheric pressures P are measuredmLower resistance and determination of different predetermined humidity HnThe specifications of the suction resistance standard rods in the suction resistance standard rod group adopted by the lower suction resistance can be completely the same, but two groups of suction resistance standard rod groups are adopted to respectively measure different preset atmospheric pressures PmLower resistance and determination of different predetermined humidity HnLower suction resistance.
In specific implementation, the atmospheric pressure P is presetmMay be less than normal atmospheric pressure, e.g. P1And 9500 Pa. With the gradual increase of m, the atmospheric pressure P is presetmThe step length is increased, and the maximum preset atmospheric pressure is less than 10133Pa, or the maximum preset atmospheric pressure is flexibly set according to actual requirements.
The capillary aperture of each resistance absorption standard rod of the resistance absorption standard rod group can enable the resistance absorption of each resistance absorption standard rod to be changed in the trend of arithmetic progression. For example, the suction resistances of the respective suction resistance standard rods of the suction resistance standard rod group are 1kPa, 2kPa, 3kPa and 4kPa, respectively.
In order to ensure the accuracy of the measured suction resistance value of the suction resistance standard rod, the upper limit of m can be set to 3, and P is19500Pa, a predetermined atmospheric pressure PmStep of (2)The length is set to 2000.
Step S3: according to different actually measured environmental humidity Hn′The next measured suction resistance parameter P (x) of the suction resistance standard rod set is obtained to obtain the relation function of the suction resistance parameter P (x) of the suction resistance standard rod set and the environmental humidity H, and the atmospheric pressure P of the environment is measured according to different actual measurement conditionsm′And measuring the suction resistance parameter P (y) of the suction resistance standard rod set to obtain a relation function of the suction resistance parameter P (y) of the suction resistance standard rod set and the ambient atmospheric pressure P. The above-mentioned suction resistance parameter p (x) of the suction resistance standard rod set may be, for example, the suction resistance value of each suction resistance standard rod of the suction resistance standard rod set or the suction resistance change rate of each suction resistance standard rod of the suction resistance standard rod set. The above-mentioned suction resistance parameter p (y) of the suction resistance standard rod set may be, for example, the suction resistance value of each suction resistance standard rod of the suction resistance standard rod set or the suction resistance change rate of each suction resistance standard rod of the suction resistance standard rod set.
Step S4: obtaining a first suction resistance standard rod suction resistance correction coefficient k by a relation function of a suction resistance parameter P (x) of the suction resistance standard rod group and the ambient humidity HhAnd obtaining a second suction resistance standard rod suction resistance correction coefficient k by a relation function of the suction resistance parameter P (y) of the suction resistance standard rod group and the ambient atmospheric pressure PP。
Step S5: the suction resistance correction coefficient k of the first suction resistance standard barhAnd a second suction resistance standard rod suction resistance correction coefficient kPAnd acquiring a suction resistance correction coefficient k of the suction resistance standard rod. In specific implementation, the suction resistance correction coefficient k of the first suction resistance standard rod can be calculatedhAnd a second suction resistance standard rod suction resistance correction coefficient kPThe average value is the suction resistance correction coefficient k of the suction resistance standard rod.
Step S6: measuring the suction resistance P of a single suction resistance standard rodxAnd obtaining the measured resistance to draw PxReal-time ambient humidity HAAnd real-time ambient atmospheric pressure PA。
Step S7: according to Ps1＝k×(HA-60)+PxOr Ps1＝Px{1+[k×(HA-60)/100]Calculating to obtain a suction resistance correction value P of the first suction resistance standard rods1And according to Ps2＝k×(PA-10133)+PxOr Ps2＝Px{1+[k×(PA-10133)/100]Calculating to obtain a suction resistance correction value P of a second suction resistance standard rods2。
Step S8: the suction resistance correction value P of the first suction resistance standard bars1And a second suction resistance standard rod suction resistance correction value Ps2Obtaining a suction resistance correction value P of a suction resistance standard rods. In specific implementation, the suction resistance correction value P of the first suction resistance standard bar can be calculateds1And a second suction resistance standard rod suction resistance correction value Ps2Is the average value of the suction resistance correction value P of the suction resistance standard rods。
In one embodiment of the method for measuring the humidity and atmospheric pressure compensation of the suction resistance standard rod of the present disclosure, step S3 may be as follows:
step S3-1: calculating different actually measured environmental humidity H according to the measured suction resistancen′The average value of the suction resistance values P (a) of the suction resistance standard rods of the lower suction resistance standard rod group and the calculation of the atmospheric pressure P of different measured environmentsm′Average value of the suction resistance values P (b) of the suction resistance standard rods of the lower suction resistance standard rod group. Here, P (a) is a measured ambient humidity Hn′The average value of the suction resistance values of N suction resistance standard rods in the lower suction resistance standard rod group, and P (b) is the atmospheric pressure P of a certain measured environmentm′And (3) the average value of the suction resistance values of the N suction resistance standard rods in the lower suction resistance standard rod group.
Step S3-2: average value of the suction resistance values P (a) of the suction resistance standard rods of the suction resistance standard rod group and actually measured ambient humidity Hn′Linear fitting is carried out to obtain a relation function P (a) k of the resistance value of the resistance absorption standard rod group and the ambient humidity HhH+b1And the average value of the suction resistance values P (b) of the suction resistance standard rods of the suction resistance standard rod group and the actually measured ambient atmospheric pressure Pm′Linear fitting is carried out to obtain a relation function P (b) k of the resistance value of the resistance absorption standard rod group and the ambient atmospheric pressure PpP+b2Wherein b is1And b2Are all constants. The suction resistance value of the suction resistance standard rod group refers to the average value of the suction resistance values of the suction resistance standard rods in the suction resistance standard rod group.
In this embodiment, step S4 is as follows: obtaining the relation function of the resistance value of the resistance-absorption standard rod group and the ambient humidity HSuction resistance correction coefficient k of suction resistance standard rodhAnd obtaining a suction resistance correction coefficient k of the second suction resistance standard rod according to the relation function of the suction resistance value of the suction resistance standard rod group and the ambient atmospheric pressure PP. Step S5 is as follows: the suction resistance correction coefficient k of the first suction resistance standard barhAnd a second suction resistance standard rod suction resistance correction coefficient kPAnd acquiring a suction resistance correction coefficient k of the suction resistance standard rod. Step S6 is as follows: measuring the suction resistance P of a single suction resistance standard rodxAnd obtaining the measured resistance to draw PxReal-time ambient humidity HAAnd real-time ambient atmospheric pressure PA. Step S7 is as follows: according to Ps1＝k×(HA-60)+PxCalculating to obtain a suction resistance correction value P of the first suction resistance standard rods1And according to Ps2＝k×(PA-10133)+PxCalculating to obtain a suction resistance correction value P of a second suction resistance standard rods2. Step S8 is as follows: calculating the suction resistance correction value P of the first suction resistance standard bars1And a second suction resistance standard rod suction resistance correction value Ps2Is the average value of the suction resistance correction value P of the suction resistance standard rods。
The suction resistance correction value P of the suction resistance standard rod is obtained by calculationsThe measured suction resistance value of the suction resistance standard rod is compensated and corrected according to the environmental humidity and the atmospheric pressure measured by the suction resistance of the suction resistance standard rod, the influence of the humidity and the atmospheric pressure on the suction resistance measurement accuracy of the suction resistance standard rod is effectively eliminated, and the method has the advantages of being strong in real-time performance and high in accuracy.
In another embodiment of the method for measuring the humidity and atmospheric pressure compensation of the suction resistance standard rod of the present disclosure, step S3 may be as follows:
step S3-1: calculating different actually measured environmental humidity H according to the measured suction resistancen′The average value of the suction resistance change rate P (c) of each suction resistance standard rod of the lower suction resistance standard rod group and the calculation of the atmospheric pressure P (c) of different actual measurement environmentsm′Average value of the suction resistance change rate P (d) of each suction resistance standard rod of the lower suction resistance standard rod group. Here, P (c) is a measured ambient humidity Hn′The average value of the suction resistance change rate of N suction resistance standard rods in the lower suction resistance standard rod group, and P (d) is the atmospheric pressure P of a certain actually measured environmentm′Lower suction resistanceAnd (3) average value of suction resistance change rate of N suction resistance standard rods in the standard rod group.
Step S3-2: average value of suction resistance change rate P (c) of each suction resistance standard rod of suction resistance standard rod group and actually measured ambient humidity Hn′Linear fitting is carried out to obtain a relation function P (c) k of the suction resistance change rate of the suction resistance standard rod group and the environmental humidity HhH-b3And the average value of the suction resistance change rate P (d) of each suction resistance standard rod of the suction resistance standard rod group and the actually measured ambient atmospheric pressure Pm′Linear fitting is carried out to obtain a relation function P (d) k of the suction resistance change rate of the suction resistance standard rod group and the ambient atmospheric pressure PpP-b4Wherein b is3And b4Are all constants. The suction resistance change rate of the suction resistance standard rod group refers to the average value of the suction resistance change rates of the suction resistance standard rods in the suction resistance standard rod group.
In this embodiment, step S4 is as follows: obtaining a first suction resistance standard rod suction resistance correction coefficient k according to a relation function of the suction resistance change rate of the suction resistance standard rod group and the ambient humidity HhAnd obtaining a second suction resistance standard rod suction resistance correction coefficient k according to the relation function of the suction resistance change rate of the suction resistance standard rod group and the ambient atmospheric pressure PP. Step S5 is as follows: the suction resistance correction coefficient k of the first suction resistance standard barhAnd a second suction resistance standard rod suction resistance correction coefficient kPAnd acquiring a suction resistance correction coefficient k of the suction resistance standard rod. Step S6 is as follows: measuring the suction resistance P of a single suction resistance standard rodxAnd obtaining the measured resistance to draw PxReal-time ambient humidity HAAnd real-time ambient atmospheric pressure PA. Step S7 is as follows: according to Ps1＝Px{1+[k×(HA-60)/100]Calculating to obtain a suction resistance correction value P of the first suction resistance standard rods1And according to Ps2＝Px{1+[k×(PA-10133)/100]Calculating to obtain a suction resistance correction value P of a second suction resistance standard rods2. Step S8 is as follows: calculating the suction resistance correction value P of the first suction resistance standard bars1And a second suction resistance standard rod suction resistance correction value Ps2Is the average value of the suction resistance correction value P of the suction resistance standard rods。
The suction resistance standard rod obtained by calculationSuction resistance correction value PsThe measured suction resistance value of the suction resistance standard rod is compensated and corrected according to the environmental humidity and the atmospheric pressure measured by the suction resistance of the suction resistance standard rod, the influence of the humidity and the atmospheric pressure on the suction resistance measurement accuracy of the suction resistance standard rod is effectively eliminated, and the method has the advantages of being strong in real-time performance and high in accuracy.
Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.
Claims (10)
1. A method for measuring the compensation of the suction resistance humidity and atmospheric pressure of a suction resistance standard rod is characterized by comprising the following steps:
adjusting the humidity of the environment, when the humidity of the environment reaches a preset humidity HnThen, the absorption and resistance standard rods are put into the absorption and resistance standard rod group to be balanced for a period of time, and each absorption and resistance standard rod of the absorption and resistance standard rod group is at a preset humidity HnSucking for a period of time, gradually increasing the sucked flow from 0 and keeping the sucked flow at 17.5mL/s, and then measuring the preset humidity H of each suction resistance standard rod of the suction resistance standard rod groupnThe suction resistance is measured for M times, and the actually measured environmental humidity H during the measurement of the suction resistance is obtainedn′Wherein n is a natural number greater than or equal to 1, and the preset humidity H is increased gradually with the increase of nnGradually increasing, wherein the suction resistance standard rod group comprises N suction resistance standard rods with different capillary tube apertures;
adjusting the atmospheric pressure of the environment, when the atmospheric pressure of the environment reaches the preset atmospheric pressure PmThen, the absorption resistance standard rod group is put in for balancing for a period of time, and each absorption resistance standard rod of the absorption resistance standard rod group is at the preset atmospheric pressure PmPumping for a period of time, gradually increasing the pumped flow from 0 and keeping the pumped flow at 17.5mL/s, and then measuring the pressure P of each resistance suction standard rod of the resistance suction standard rod group at different preset atmospheric pressuresmThe suction resistance is measured for Q times, and the actual measurement environment atmospheric pressure P is obtained when the suction resistance is measuredm′Wherein m is a natural number greater than or equal to 1, and the preset atmospheric pressure P is increased gradually with the increase of mmGradually increasing, wherein the suction resistance standard rod group comprises N suction resistance standard rods with different capillary tube apertures;
according to different actually measured environmental humidity Hn′The next measured suction resistance parameter P (x) of the suction resistance standard rod set is obtained to obtain the relation function of the suction resistance parameter P (x) of the suction resistance standard rod set and the environmental humidity H, and the atmospheric pressure P of the environment is measured according to different actual measurement conditionsm′Measuring the suction resistance parameter P (y) of the suction resistance standard rod group to obtain a relation function of the suction resistance parameter P (y) of the suction resistance standard rod group and the environmental atmospheric pressure P;
obtaining a first suction resistance standard rod suction resistance correction coefficient k by a relation function of a suction resistance parameter P (x) of the suction resistance standard rod group and the ambient humidity HhAnd obtaining a second suction resistance standard rod suction resistance correction coefficient k by a relation function of the suction resistance parameter P (y) of the suction resistance standard rod group and the ambient atmospheric pressure PP；
The suction resistance correction coefficient k of the first suction resistance standard barhAnd a second suction resistance standard rod suction resistance correction coefficient kPAcquiring a suction resistance correction coefficient k of a suction resistance standard rod;
measuring the suction resistance P of a single suction resistance standard rodxAnd obtaining the measured resistance to draw PxReal-time ambient humidity HAAnd real-time ambient atmospheric pressure PA；
According to Ps1＝k×(HA-60)+PxOr Ps1＝Px{1+[k×(HA-60)/100]Calculating to obtain a suction resistance correction value P of the first suction resistance standard rods1And according to Ps2＝k×(PA-10133)+PxOr Ps2＝Px{1+[k×(PA-10133)/100]Calculating to obtain a suction resistance correction value P of a second suction resistance standard rods2；
The suction resistance correction value P of the first suction resistance standard bars1And a second suction resistance standard rod suction resistance correction value Ps2Obtaining a suction resistance correction value P of a suction resistance standard rods。
2. The standard stick moisture wicking claim 1And an atmospheric pressure compensation measuring method, characterized in that H1At 54%, with increasing n, a preset humidity HnThe step size is increased to 60%;
P19500Pa, with increasing m, presetting atmospheric pressure PmThe equal step is increased, and the maximum preset atmospheric pressure is less than 10133 Pa.
3. The method of claim 2, wherein n has an upper limit of 6 and H is H1At 54%, preset humidity HnStep size of the change of (2);
the upper limit of m is 3, and P19500Pa, a predetermined atmospheric pressure PmThe step size of the change of (1) is 2000.
4. The method of claim 1 wherein M and Q are both 5.
5. The method for determining the humidity and barometric pressure compensation of a standard stick for suction resistance according to claim 1, wherein the measured ambient humidity H is determined according to the measured ambient humidity Hn′The next measured suction resistance parameter P (x) of the suction resistance standard rod set is obtained to obtain the relation function of the suction resistance parameter P (x) of the suction resistance standard rod set and the environmental humidity H, and the atmospheric pressure P of the environment is measured according to different actual measurement conditionsm′The following measured suction resistance parameters P (y) of the suction resistance standard rod set are obtained to obtain a relation function of the suction resistance parameters P (y) of the suction resistance standard rod set and the ambient atmospheric pressure P, wherein the relation function is as follows:
calculating different actually measured environmental humidity H according to the measured suction resistancen′The average value of the suction resistance values P (a) of the suction resistance standard rods of the lower suction resistance standard rod group and the calculation of the atmospheric pressure P of different measured environmentsm′The average value of the suction resistance values P (b) of the suction resistance standard rods of the lower suction resistance standard rod group;
average value of the suction resistance values P (a) of the suction resistance standard rods of the suction resistance standard rod group and actually measured ambient humidity Hn′Linear fitting is carried out to obtain the resistance value of the suction resistance standard rod group and the ambient humidity HThe relation function p (a) ═ khH+b1And the average value of the suction resistance values P (b) of the suction resistance standard rods of the suction resistance standard rod group and the actually measured ambient atmospheric pressure Pm′Linear fitting is carried out to obtain a relation function P (b) k of the resistance value of the resistance absorption standard rod group and the ambient atmospheric pressure PpP+b2Wherein b is1And b2Are all constants.
6. The method of claim 5, wherein the method is based on Ps1＝k×(HA-60)+PxCalculating to obtain a suction resistance correction value P of the first suction resistance standard rods1And according to Ps2＝k×(PA-10133)+PxCalculating to obtain a suction resistance correction value P of a second suction resistance standard rods2。
7. The method for determining the humidity and barometric pressure compensation of a standard stick for suction resistance according to claim 1, wherein the measured ambient humidity H is determined according to the measured ambient humidity Hn′The next measured suction resistance parameter P (x) of the suction resistance standard rod set is obtained to obtain the relation function of the suction resistance parameter P (x) of the suction resistance standard rod set and the environmental humidity H, and the atmospheric pressure P of the environment is measured according to different actual measurement conditionsm′The following measured suction resistance parameters P (y) of the suction resistance standard rod set are obtained to obtain a relation function of the suction resistance parameters P (y) of the suction resistance standard rod set and the ambient atmospheric pressure P, wherein the relation function is as follows:
calculating different actually measured environmental humidity H according to the measured suction resistancen′The average value of the suction resistance change rate P (c) of each suction resistance standard rod of the lower suction resistance standard rod group and the calculation of the atmospheric pressure P (c) of different actual measurement environmentsm′The average value of the suction resistance change rate P (d) of each suction resistance standard rod of the lower suction resistance standard rod group;
average value of suction resistance change rate P (c) of each suction resistance standard rod of suction resistance standard rod group and actually measured ambient humidity Hn′Linear fitting is carried out to obtain a relation function P (c) k of the suction resistance change rate of the suction resistance standard rod group and the environmental humidity HhH-b3And the average value and the real value of the suction resistance change rate P (d) of each suction resistance standard rod of the suction resistance standard rod groupMeasuring the atmospheric pressure P of the environmentm′Linear fitting is carried out to obtain a relation function P (d) k of the suction resistance change rate of the suction resistance standard rod group and the ambient atmospheric pressure PpP-b4Wherein b is3And b4Are all constants.
8. The method of claim 7 wherein the moisture and barometric pressure compensation is measured according to Ps1＝Px{1+[k×(HA-60)/100]Calculating to obtain a suction resistance correction value P of the first suction resistance standard rods1And according to Ps2＝Px{1+[k×(PA-10133)/100]Calculating to obtain a suction resistance correction value P of a second suction resistance standard rods2。
9. The method for determining moisture and atmospheric pressure compensation of a suction resistance standard bar according to claim 1, wherein the coefficient k for correcting the suction resistance of the first suction resistance standard bar ishAnd a second suction resistance standard rod suction resistance correction coefficient kPThe method comprises the following specific steps of obtaining a suction resistance correction coefficient k of a suction resistance standard rod:
calculating the suction resistance correction coefficient k of the first suction resistance standard rodhAnd a second suction resistance standard rod suction resistance correction coefficient kPThe average value is the suction resistance correction coefficient k of the suction resistance standard rod.
10. The method for determining moisture and barometric compensation for draw resistance of a standard draw resistance stick according to claim 1, wherein the first draw resistance standard stick draw resistance correction value Ps1And a second suction resistance standard rod suction resistance correction value Ps2Obtaining a suction resistance correction value P of a suction resistance standard rodsThe method comprises the following specific steps:
calculating the suction resistance correction value P of the first suction resistance standard bars1And a second suction resistance standard rod suction resistance correction value Ps2Is the average value of the suction resistance correction value P of the suction resistance standard rods。
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Cited By (1)
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| CN112229455A (en) * | 2020-10-12 | 2021-01-15 | 中国烟草总公司郑州烟草研究院 | Volume flow adjustable suction resistance standard rod measuring method |
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| US4155248A (en) * | 1978-07-07 | 1979-05-22 | Lorillard--A Division of Loew's Theatres, Inc. | Method and apparatus for determining the pressure drop and circumference of filter rods |
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