CN114862255A - Tobacco replacement method and device, electronic equipment and storage medium - Google Patents
Tobacco replacement method and device, electronic equipment and storage medium Download PDFInfo
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Abstract
The embodiment of the invention discloses a tobacco leaf replacing method, a tobacco leaf replacing device, electronic equipment and a storage medium, wherein the method comprises the following steps: acquiring a micro-quotient thermogravimetric curve of the tobacco leaves to be replaced and micro-quotient thermogravimetric curves of at least two tobacco leaves to be selected; determining the micro-quotient thermogravimetric curves of the at least two tobacco leaves to be selected from a pre-established tobacco leaf micro-quotient thermogravimetric curve database; for each tobacco leaf to be selected, determining the pyrolysis difference degree between the tobacco leaf to be replaced and the tobacco leaf to be selected based on the micro-quotient thermogravimetry curve of the tobacco leaf to be replaced and the micro-quotient thermogravimetry curve of the tobacco leaf to be selected; wherein the pyrolysis variance is determined based on a root mean square error algorithm; and determining the target tobacco leaves corresponding to the tobacco leaves to be replaced according to the pyrolysis difference degree corresponding to each tobacco leaf to be selected. Through the technical scheme of the embodiment of the invention, the technical effects of reducing the workload of workers and improving the objectivity and consistency of tobacco evaluation are realized.
Description
Technical Field
The embodiment of the invention relates to a cigarette manufacturing technology, in particular to a tobacco replacing method, a tobacco replacing device, electronic equipment and a storage medium.
Background
In the cigarette manufacturing process, due to the limitation of tobacco stock, functional substitution is needed for part of tobacco in the cigarette formula.
However, the substitution of the tobacco leaves needs to meet the characteristics of cigarette sensory quality, product style and the like. In general, when comparing differences between tobacco samples, two methods are commonly used, one to analyze differences in sensory quality and the other to analyze differences in tobacco composition and its pyrolysis combustion smoke products.
By analyzing the differences of tobacco components and pyrolysis combustion smoke products, the quality of tobacco leaves can be partially reflected, but all information of the tobacco leaves cannot be completely expressed, and most industrial enterprises still adopt a sensory evaluation mode to replace the tobacco leaves. By analyzing the sensory quality difference, the tobacco difference needs to be identified by the smoker, and the smoker is easily influenced by a plurality of factors such as human smell, taste fatigue, smoking environment, psychology and the like, and certain subjective factors may exist. In addition, the number of sample test samples per day needs to be controlled within a certain range by the test panel to ensure the accuracy of test results, and when the number of samples is large, the screening is long, and the cost of manpower and material resources is high.
Disclosure of Invention
The embodiment of the invention provides a tobacco leaf replacing method, a tobacco leaf replacing device, electronic equipment and a storage medium, and aims to achieve the technical effects of reducing the workload of workers and improving the objectivity and consistency of tobacco leaf evaluation.
In a first aspect, an embodiment of the present invention provides a tobacco leaf replacement method, including:
acquiring a micro-quotient thermogravimetric curve of the tobacco leaves to be replaced and micro-quotient thermogravimetric curves of at least two tobacco leaves to be selected; determining the micro-quotient thermogravimetric curves of the at least two tobacco leaves to be selected from a pre-established tobacco leaf micro-quotient thermogravimetric curve database;
for each tobacco leaf to be selected, determining the pyrolysis difference degree between the tobacco leaf to be replaced and the tobacco leaf to be selected based on the micro-quotient thermogravimetry curve of the tobacco leaf to be replaced and the micro-quotient thermogravimetry curve of the tobacco leaf to be selected; wherein the pyrolysis variance is determined based on a root mean square error algorithm;
and determining the target tobacco leaves corresponding to the tobacco leaves to be replaced according to the pyrolysis difference degree corresponding to each tobacco leaf to be selected.
In a second aspect, an embodiment of the present invention further provides a tobacco replacement device, where the device includes:
the micro-quotient thermogravimetric curve acquisition module is used for acquiring a micro-quotient thermogravimetric curve of the tobacco leaves to be replaced and micro-quotient thermogravimetric curves of at least two tobacco leaves to be selected; determining the micro-quotient thermogravimetric curves of the at least two tobacco leaves to be selected from a pre-established tobacco leaf micro-quotient thermogravimetric curve database;
the pyrolysis difference degree determining module is used for determining the pyrolysis difference degree between the tobacco leaves to be replaced and the tobacco leaves to be selected based on the derivative thermogravimetric curve of the tobacco leaves to be replaced and the derivative thermogravimetric curve of the tobacco leaves to be selected; wherein the pyrolysis variance is determined based on a root mean square error algorithm;
and the target tobacco leaf determining module is used for determining the target tobacco leaves corresponding to the tobacco leaves to be replaced according to the pyrolysis difference degree corresponding to each tobacco leaf to be selected.
In a third aspect, an embodiment of the present invention further provides an electronic device, where the electronic device includes:
one or more processors;
a storage device for storing one or more programs,
when executed by the one or more processors, cause the one or more processors to implement a tobacco replacement method according to any one of the embodiments of the present invention.
In a fourth aspect, the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer program is executed by a processor to implement the tobacco leaf replacement method according to any one of the embodiments of the present invention.
According to the technical scheme of the embodiment of the invention, the micro-quotient thermogravimetric curve of the tobacco leaves to be replaced and the micro-quotient thermogravimetric curves of at least two tobacco leaves to be selected are obtained through the pre-established tobacco leaf micro-quotient thermogravimetric curve database, the pyrolysis difference degree between the tobacco leaves to be replaced and the tobacco leaves to be selected is determined for each tobacco leaf to be selected based on the micro-quotient thermogravimetric curve of the tobacco leaves to be replaced and the micro-quotient thermogravimetric curve of the tobacco leaves to be selected, and the target tobacco leaves corresponding to the tobacco leaves to be replaced are determined according to the pyrolysis difference degree corresponding to each tobacco leaf to be selected, so that the problems of information loss caused by chemical component analysis and high subjectivity and large error caused by manual evaluation and analysis are solved, the workload of manual work is reduced, and the effects of objectivity and consistency of tobacco leaf evaluation are improved.
Drawings
In order to more clearly illustrate the technical solutions of the exemplary embodiments of the present invention, a brief description is given below of the drawings used in describing the embodiments. It should be clear that the described figures are only views of some of the embodiments of the invention to be described, not all, and that for a person skilled in the art, other figures can be derived from these figures without inventive effort.
Fig. 1 is a schematic flow chart of a tobacco leaf replacing method according to an embodiment of the present invention;
fig. 2 is a schematic flow chart of a tobacco leaf replacing method according to a second embodiment of the present invention;
fig. 3 is a schematic flow chart of a tobacco leaf replacing method according to a third embodiment of the present invention;
fig. 4 is a schematic structural diagram of a tobacco replacing device according to a fourth embodiment of the present invention;
fig. 5 is a schematic structural diagram of an electronic device according to a fifth embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Example one
Fig. 1 is a schematic flow chart of a tobacco leaf replacing method according to an embodiment of the present invention, which is applicable to a situation where other tobacco leaves are selected to be effectively replaced when the stock of the tobacco leaves to be replaced is insufficient, and the method may be executed by a tobacco leaf replacing apparatus, where the apparatus may be implemented in the form of software and/or hardware, and the hardware may be an electronic device, and optionally, the electronic device may be a mobile terminal, a PC terminal, a server, or the like.
As shown in fig. 1, the method of this embodiment specifically includes the following steps:
s110, acquiring a micro-quotient thermogravimetric curve of the tobacco leaves to be replaced and micro-quotient thermogravimetric curves of at least two tobacco leaves to be selected.
The tobacco leaves to be replaced can be the types of tobacco leaves which need to be replaced under the conditions of insufficient storage and the like. The tobacco leaves to be selected can be any other tobacco leaves except the tobacco leaves to be replaced, and the tobacco leaves to be selected can be used as alternatives for replacing the tobacco leaves to be replaced. A Differential Thermogravimetry (DTG) curve is a curve obtained from the first Derivative of a Thermogravimetry (TG) curve with temperature (or time), and the TG curve is obtained based on a thermogravimetric Analyzer (TGA) acquisition. The physical significance of the DTG curve represents the relation between the weight loss rate and the temperature (or the time), and the peak point of the DTG curve is the maximum point of the weight loss rate. And determining the micro-quotient thermogravimetric curves of at least two kinds of tobacco leaves to be selected from a pre-established tobacco leaf micro-quotient thermogravimetric curve database. The pre-established tobacco leaf differential thermal weight curve database stores differential thermal weight curves of various sample tobacco leaves.
Specifically, after the tobacco leaves to be replaced and the tobacco leaves to be selected are determined, the differential quotient thermogravimetric curves of the tobacco leaves to be replaced can be acquired and obtained through an experimental mode, all sample tobacco leaves except the tobacco leaves to be replaced in a pre-established tobacco leaf differential quotient thermogravimetric curve database can be used as the tobacco leaves to be selected, and the differential quotient thermogravimetric curves of the tobacco leaves to be selected are obtained from the tobacco leaf differential quotient thermogravimetric curve database. Or determining at least two tobacco leaves with larger stock quantity as the tobacco leaves to be selected according to the current stock condition, and further searching the micro-quotient thermogravimetric curves of the tobacco leaves to be selected from the pre-established tobacco leaf micro-quotient thermogravimetric curve database.
Optionally, the tobacco leaves to be replaced can be determined according to the stock, and the method specifically includes:
and if the stock of at least one stock tobacco leaf cannot meet the use requirement, determining the stock tobacco leaf as the tobacco leaf to be replaced.
The stored tobacco leaves may be tobacco leaves stored in a warehouse of a current cigarette factory, or tobacco leaves that should be stored. The inventory may be the current remaining mass of tobacco leaves in stock.
Specifically, according to the leaf group maintenance plan of the warehouse, various stock tobacco leaves in the leaf group formulas corresponding to various product formulas and the demand of the stock tobacco leaves can be determined. Furthermore, the resource guarantee condition can be determined, namely the stock of each stock of tobacco leaves in the warehouse is determined, and whether the stock of each stock of tobacco leaves can meet the use requirement or not is judged. And then, when the stock of the tobacco leaves in stock is monitored to be incapable of meeting the use requirement, the tobacco leaves in stock which cannot meet the use requirement can be determined as the tobacco leaves to be replaced. And determining the stock tobacco leaves capable of meeting the use requirements as the tobacco leaves to be selected.
And S120, determining the pyrolysis difference degree between the tobacco leaves to be replaced and the tobacco leaves to be selected based on the micro-quotient thermogravimetry curve of the tobacco leaves to be replaced and the micro-quotient thermogravimetry curve of the tobacco leaves to be selected aiming at each tobacco leaf to be selected.
The pyrolysis difference is determined based on a root mean square error algorithm, and the pyrolysis difference is used for measuring the difference between the tobacco leaves to be replaced and the tobacco leaves to be selected.
Specifically, for each tobacco leaf to be selected, the tobacco leaf to be selected and the tobacco leaf to be replaced are matched, specifically, a differential quotient thermogravimetry curve of the tobacco leaf to be replaced and a differential quotient thermogravimetry curve of the tobacco leaf to be selected are matched, the root mean square error of the two differential quotient thermogravimetry curves is determined, and the determined root mean square error is used as the pyrolysis difference degree between the tobacco leaf to be replaced and the tobacco leaf to be selected.
Optionally, the pyrolysis difference between the tobacco leaves to be replaced and the selected tobacco leaves can be determined based on the following formula:
wherein RMSE represents the pyrolysis difference degree between the tobacco leaves to be replaced and the tobacco leaves to be selected, N represents the total point number recorded in the micro-quotient thermogravimetric curve, i represents the ith data point in the micro-quotient thermogravimetric curve,
represents the first derivative of the thermogravimetric curve collected by the thermogravimetric analyzer, also represents the numerical value of the differential thermogravimetric curve, and also represents the mass loss rate,
representing the mass loss rate of the tobacco leaf to be selected at the ith data point,
representing the mass loss rate of the tobacco leaf to be replaced at the ith data point.
It should be noted that the root mean square error is selected to determine the pyrolysis variation because it can describe the dispersion of each point and the average deviation of the overall curve. In addition, the sequence of the data of the tobacco leaves to be selected and the data of the tobacco leaves to be replaced does not need to be paid much attention, and compared with other evaluation modes, the applicability is improved.
S130, determining target tobacco leaves corresponding to the tobacco leaves to be replaced according to the pyrolysis difference degree corresponding to each tobacco leaf to be selected.
The target tobacco leaves can be one or more to-be-selected tobacco leaves with pyrolysis difference degrees meeting preset conditions. The preset conditions may be one or more to-be-selected tobacco leaves with the minimum pyrolysis difference degree, all to-be-selected tobacco leaves with the pyrolysis difference degree smaller than a certain preset threshold value, and the like, and the specific conditions may be determined according to actual requirements.
Specifically, after obtaining the pyrolysis difference between each to-be-selected tobacco leaf and the to-be-replaced tobacco leaf, the pyrolysis difference can be screened according to the preset conditions, and one or more to-be-selected tobacco leaves meeting the preset conditions are screened out as target tobacco leaves. And after a plurality of target tobacco leaves are selected through the pyrolysis difference degree, determining a target tobacco leaf with the most similar sensory quality and product style to the tobacco leaves to be replaced as the final target tobacco leaf in a manual smoking evaluation mode.
According to the technical scheme of the embodiment of the invention, the micro-quotient thermogravimetric curve of the tobacco leaves to be replaced and the micro-quotient thermogravimetric curves of at least two tobacco leaves to be selected are obtained through the pre-established tobacco leaf micro-quotient thermogravimetric curve database, the pyrolysis difference degree between the tobacco leaves to be replaced and the tobacco leaves to be selected is determined for each tobacco leaf to be selected based on the micro-quotient thermogravimetric curve of the tobacco leaves to be replaced and the micro-quotient thermogravimetric curve of the tobacco leaves to be selected, and the target tobacco leaves corresponding to the tobacco leaves to be replaced are determined according to the pyrolysis difference degree corresponding to each tobacco leaf to be selected, so that the problems of information loss caused by chemical component analysis and high subjectivity and large error caused by manual evaluation and analysis are solved, the workload of manual work is reduced, and the effects of objectivity and consistency of tobacco leaf evaluation are improved.
Example two
Fig. 2 is a schematic flow chart of a tobacco replacement method according to a second embodiment of the present invention, and this embodiment refers to a method for establishing a tobacco derivative thermogravimetric curve database based on the above embodiments, and specifically refers to the technical solution of this embodiment. The same or corresponding terms as those in the above embodiments are not explained in detail herein.
As shown in fig. 2, the method of this embodiment specifically includes the following steps:
s210, processing the tobacco leaves to be measured according to preset processing conditions, and measuring the tobacco leaves to be measured by a thermogravimetric analyzer based on preset parameters to obtain a thermogravimetric curve corresponding to the tobacco leaves to be measured.
The tobacco leaves to be measured are sample tobacco leaves required for constructing a tobacco leaf micro-quotient thermogravimetric curve database, namely the sample tobacco leaves required to measure the micro-quotient thermogravimetric curve. The preset processing condition may be processing of the tobacco leaves to be measured before measurement, and only the measurement data obtained by measuring the tobacco leaves processed under the same processing condition has usability. The preset treatment conditions include at least one of pretreatment rules, drying temperature, drying time, moisture content and grinding rules. The preset parameters can be parameters for setting the thermogravimetric analyzer and are required to be suitable for the tobacco leaves to be measured. The preset parameters comprise at least one of a heating rate, a nitrogen atmosphere flow and a temperature interval. The thermogravimetric curve may be a curve of the mass of the tobacco leaf to be measured as a function of temperature (or time).
Optionally, in order to obtain a better thermogravimetric curve through thermogravimetric analyzer measurement, the pretreatment rule is to seal and store the powder at 22 ℃ and 60% humidity for 48 hours, the drying temperature is 40 ℃, the drying time is 2 hours, the water content is 6% to 8%, and the grinding rule is to grind the powder and sieve the powder; the heating rate is 20K/min, the flow rate of the nitrogen atmosphere is 20mL/min, and the temperature range is 30-1000 ℃.
Specifically, the tobacco leaves to be measured are processed according to preset processing conditions, so that the tobacco leaves to be measured are objectively consistent. And then, measuring the processed tobacco leaves to be measured by a thermogravimetric analyzer based on preset parameters to obtain a thermogravimetric curve corresponding to the tobacco leaves to be measured for subsequent analysis.
For example, tobacco leaves to be measured in different countries, different production places, different parts and different grades can be collected as samples, the samples are ground into powder, the powder is filtered through a 120-mesh and 150-mesh screen, and the powder is sealed for standby. Then, weighing a proper amount of sample for thermogravimetric experiment, wherein the temperature rise rate of the sample is about 20K/min, the flow rate of the nitrogen atmosphere is about 20mL/min, and the pyrolysis temperature range is set to be 30-1000 ℃. The moisture content of the tobacco shreds is different, so that the pyrolysis behavior is different, and the detection result is influenced. For this purpose, the sample was stored under sealed conditions at 22 ℃ and 60% humidity for 48 hours before loading, to remove the influence of moisture. In addition, the particle size of the sample also affects an important factor of pyrolysis, and the pyrolysis repeatability of the small particle size is better, so that the sample with the particle size of 120-.
S220, solving a first derivative of the thermogravimetric curve corresponding to the tobacco leaves to be measured to obtain a micro-quotient thermogravimetric curve corresponding to the tobacco leaves to be measured, and constructing a tobacco leaf micro-quotient thermogravimetric curve database based on the tobacco leaves to be measured and the micro-quotient thermogravimetric curve corresponding to the tobacco leaves to be measured.
Specifically, the thermogravimetric curve is a change relationship between the mass and the temperature of the sample under the programmed temperature rise, after the thermogravimetric curve corresponding to the tobacco leaves to be measured is obtained, in order to make the pyrolysis behavior more obvious, the TG curve is derived, and the obtained first derivative can reflect the relationship between the mass change rate and the temperature, namely the derivative thermogravimetric curve corresponding to the tobacco leaves to be measured. And further correspondingly storing the tobacco leaves to be measured and the micro-quotient thermogravimetry curves corresponding to the tobacco leaves to be measured into a tobacco leaf micro-quotient thermogravimetry curve database so as to complete the construction of the tobacco leaf micro-quotient thermogravimetry curve database.
And S230, acquiring a differential quotient thermogravimetry curve of the tobacco leaves to be replaced and differential quotient thermogravimetry curves of at least two tobacco leaves to be selected.
The determination mode of the derivative thermogravimetric curve of the tobacco leaf to be replaced is similar to that of the derivative thermogravimetric curve of the tobacco leaf to be measured, and details are not repeated here.
S240, determining at least two weight loss temperature intervals based on the derivative thermogravimetric curve of the tobacco leaves to be replaced.
Wherein, the weightlessness temperature interval can be the temperature interval corresponding to the weightlessness peak of the tobacco leaves to be replaced. It should be noted that the DTG curve represents the rate of weight loss, and the peak generally indicates the fastest weight loss at that temperature.
Specifically, according to the derivative thermogravimetric curve of the tobacco leaves to be replaced, each weight loss peak in the derivative thermogravimetric curve can be determined, and the temperature interval corresponding to each weight loss peak is taken as a weight loss temperature interval.
For example, the DTG curve of the tobacco leaf to be replaced may be initially segmented (e.g., divided into two segments, but not limited to two segments). Because the DTG curve has a weight loss peak between 100-200 ℃ and a weight loss peak between 200-450 ℃, a more accurate weight loss temperature interval can be determined according to the data in the two temperature intervals.
And S250, aiming at each tobacco leaf to be selected, determining the sub-pyrolysis difference degree between the tobacco leaf to be replaced and the tobacco leaf to be selected in each weightlessness temperature interval according to the micro-quotient thermogravimetry curve of the tobacco leaf to be replaced and the micro-quotient thermogravimetry curve of the tobacco leaf to be selected.
The sub-pyrolysis difference degree can be the root mean square error of the derivative thermogravimetric curve of the tobacco leaves to be replaced and the derivative thermogravimetric curve of the tobacco leaves to be selected in the weight loss temperature interval.
Specifically, for each tobacco leaf to be selected, the root mean square error is calculated according to the derivative thermogravimetric curve of the tobacco leaf to be replaced and the derivative thermogravimetric curve of the tobacco leaf to be selected in each weightless temperature interval, and the sub-pyrolysis difference degree corresponding to each weightless temperature interval is obtained.
And S260, determining the pyrolysis difference degree between the tobacco leaves to be replaced and the tobacco leaves to be selected based on the pyrolysis difference degrees of the sub-tobacco leaves.
Specifically, for each tobacco leaf to be selected, after obtaining each sub-pyrolysis difference degree between the tobacco leaf to be replaced and the tobacco leaf to be selected, the average value of each sub-pyrolysis difference degree can be determined as the pyrolysis difference degree between the tobacco leaf to be replaced and the tobacco leaf to be selected. Other calculation determination modes, such as weighted summation, etc., may also be used, and the specific calculation mode may be selected according to actual requirements.
And S270, determining target tobacco leaves corresponding to the tobacco leaves to be replaced according to the pyrolysis difference degree corresponding to each tobacco leaf to be selected.
It should be noted that, the target tobacco leaves can be screened by using the minimum pyrolysis difference of each seed as the alternative principle.
In practical situations, the tobacco leaves mostly exist in a form of a tobacco leaf group, one tobacco leaf group includes a plurality of tobacco leaves, wherein more than one tobacco leaf to be replaced may exist, and at this time, it can be determined that the target tobacco leaves corresponding to each tobacco leaf to be replaced are combined. However, since there may be mutual influence of different tobacco leaves in combination, the target group of cigarettes corresponding to the group of cigarettes to be replaced may be determined by:
the method comprises the steps of firstly, aiming at a tobacco leaf group to be replaced, determining each tobacco leaf to be replaced in the tobacco leaf group to be replaced and a tobacco leaf candidate list corresponding to each tobacco leaf to be replaced.
Wherein the tobacco leaf group to be replaced comprises at least two tobacco leaves to be replaced. The tobacco leaf candidate list may be a list consisting of a plurality of target tobacco leaves corresponding to the tobacco leaves to be replaced, that is, each tobacco leaf candidate list includes at least two target tobacco leaves corresponding to one tobacco leaf to be replaced.
Specifically, at least two kinds of substitute tobacco leaves in the tobacco leaf group to be replaced are determined, and according to the technical scheme of each embodiment, at least two kinds of target tobacco leaves corresponding to each kind of tobacco leaves to be replaced can be determined. Furthermore, for each type of tobacco leaf to be replaced, at least two types of target tobacco leaves corresponding to the tobacco leaf to be replaced can be combined to obtain a tobacco leaf candidate list corresponding to the tobacco leaf to be replaced.
And step two, determining a tobacco leaf group to be selected corresponding to the tobacco leaf group to be replaced according to each tobacco leaf candidate list.
The tobacco leaf group to be selected can be a combination of various target tobacco leaves in the tobacco leaf candidate list.
Specifically, each target tobacco leaf in each tobacco leaf candidate list can be combined in a permutation and combination mode to obtain a to-be-selected tobacco leaf group corresponding to the to-be-replaced tobacco leaf group.
And step three, determining the pyrolysis difference degree between the tobacco leaf group to be replaced and the tobacco leaf group to be selected according to each tobacco leaf group to be selected and based on the micro-quotient thermogravimetry curve of the tobacco leaf group to be replaced and the micro-quotient thermogravimetry curve of the tobacco leaf group to be selected.
Specifically, for each to-be-selected tobacco leaf group, the to-be-selected tobacco leaf group is matched with the to-be-replaced tobacco leaf group, specifically, a micro quotient thermogravimetry curve of the to-be-replaced tobacco leaf group is matched with a micro quotient thermogravimetry curve of the to-be-selected tobacco leaf group, the root mean square error of the two micro quotient thermogravimetry curves is determined, and the determined root mean square error is used as the pyrolysis difference degree between the to-be-replaced tobacco leaf group and the to-be-selected tobacco leaf group.
It should be noted that, a similar manner is adopted for determining the pyrolysis difference degree between the tobacco leaf group to be replaced and the tobacco leaf group to be selected, and reference may be made to the description in each of the above embodiments.
And step four, determining a target tobacco leaf group corresponding to the tobacco leaf group to be replaced according to the pyrolysis difference degree corresponding to each tobacco leaf group to be selected.
Specifically, after obtaining the pyrolysis difference between each to-be-selected tobacco leaf group and the to-be-replaced tobacco leaf group, the pyrolysis difference may be screened according to a preset condition, and one or more to-be-selected tobacco leaf groups meeting the preset condition are screened as target tobacco leaf groups. And after a plurality of target tobacco leaf groups are selected through the pyrolysis difference degree, determining a target tobacco leaf group with the most similar sensory quality and product style to the tobacco leaf group to be replaced as a final target tobacco leaf group in a manual smoking mode.
According to the technical scheme of the embodiment, tobacco leaves to be measured are processed according to preset processing conditions, a thermogravimetric analyzer based on preset parameters is used for measuring the tobacco leaves to be measured to obtain a thermogravimetric curve corresponding to the tobacco leaves to be measured, a first derivative is obtained from the thermogravimetric curve corresponding to the tobacco leaves to be measured to obtain a differential thermogravimetric curve corresponding to the tobacco leaves to be measured, a tobacco leaf differential thermogravimetric curve database is constructed based on the tobacco leaves to be measured and the differential thermogravimetric curve corresponding to the tobacco leaves to be measured to obtain a differential thermogravimetric curve of the tobacco leaves to be replaced and differential thermogravimetric curves of at least two types of tobacco leaves to be selected, at least two weightless temperature intervals are determined based on the differential thermogravimetric curve of the tobacco leaves to be replaced, and for each type of tobacco leaves to be selected, each weightless temperature interval is determined according to the differential thermogravimetric curve of the tobacco leaves to be replaced and the differential thermogravimetric curve of the tobacco leaves to be selected, the method comprises the steps of determining the pyrolysis difference between the tobacco leaves to be replaced and the selected tobacco leaves based on the pyrolysis difference, determining the target tobacco leaves corresponding to the tobacco leaves to be replaced according to the pyrolysis difference corresponding to the tobacco leaves to be selected, solving the problems of information loss caused by chemical composition analysis and high subjectivity and high error caused by manual smoking evaluation analysis, reducing the workload of workers, and improving the objectivity and consistency of tobacco leaf evaluation.
EXAMPLE III
On the basis of the above embodiments, fig. 3 is a schematic flow chart of a tobacco replacement method according to a third embodiment of the present invention.
As shown in fig. 3, the method of the present embodiment includes:
1. the DTG curve of the tobacco leaf (tobacco leaf to be measured) was obtained by thermogravimetric analysis.
Illustratively, 300 tobacco leaf samples of different countries, different production places, different parts and different grades are collected firstly, the samples are ground into powder, the powder is filtered through a screen with 120 meshes and 150 meshes, and the powder is sealed for standby. Then, weighing a proper amount of tobacco powder to perform a thermogravimetric experiment, wherein the temperature rise rate of the sample is about 20K/min, the flow rate of the nitrogen atmosphere is about 20mL/min, and the pyrolysis temperature range is set to be 30-1000 ℃. The moisture content of the tobacco shreds is different, so that the pyrolysis behavior is different, and the detection result is influenced. For this purpose, the samples were stored in a sealed manner at a temperature of 22 ℃ and a humidity of 60% for 48 hours before being loaded on the machine, and the influence of moisture was removed. In addition, the particle size of the sample also influences an important factor of pyrolysis, and the pyrolysis repeatability of small particle size is better, so that the 120-150-mesh sample is selected. Only under the conditions that the water content and the sample granularity are in the same range, the experimental result is comparable. Next, a weight loss curve (thermogravimetric curve) was obtained, which is the relationship between the mass of the sample and the temperature under temperature programming. To make the pyrolysis behavior of tobacco more pronounced, the TG curve is derived, which reflects the relationship between mass rate of change and temperature.
2. And constructing a tobacco leaf thermogravimetric curve database.
Illustratively, all known sample data (e.g., a DTG curve derived from a TG curve, etc.) is written into a specific file (e.g., a thermogravimetric curve database) and standardized, and a user is allowed to make an adaptive modification in the corresponding program. If the sample data is insufficient, the collection and data acquisition of the sample data can be expanded, new sample data can be obtained, and the database is further expanded.
3. And constructing a pyrolysis difference model.
For example, the DTG data of tobacco leaves calculates the difference between two thermogravimetric curves (Root-Mean-Square Error, RMSE) as a correlation coefficient:
wherein RMSE represents the pyrolysis difference degree between the tobacco leaves to be replaced and the tobacco leaves to be selected, N represents the total point number recorded in the micro-quotient thermogravimetric curve, i represents the ith data point in the micro-quotient thermogravimetric curve,
represents a thermogravimetric curve collected by the thermogravimetric analyzerThe order derivative, which also represents the value of the derivative thermogravimetric curve, and also represents the mass loss rate,
representing the mass loss rate of the tobacco leaf to be selected at the ith data point,
representing the mass loss rate of the tobacco leaf to be replaced at the ith data point.
For comparison, the pyrolytic difference degrees among different tobacco leaf samples are actually calculated RMSE 10 5 Comparable to the actual calculated RMSE.
4. And screening a plurality of substitute samples with small pyrolysis difference degrees aiming at the tobacco leaves to be replaced.
Illustratively, according to the established pyrolysis difference degree model, each DTG curve is segmented (can be divided into two segments but is not limited to two segments), and the segmentation is based on the weight loss peak of the DTG curve at 100-200 ℃ and the weight loss peak at 200-450 ℃. And respectively calculating the pyrolysis difference of each tobacco sample in each section through an RMSE algorithm, and screening similar tobacco leaves with the similarity (the similarity can be determined according to the pyrolysis difference) to be replaced within a threshold value as substitute samples, namely target tobacco leaves, by taking the minimum pyrolysis difference of each section as a substitute principle.
5. Sensory panel analysis the best replacement samples were further screened.
The following specific examples are given for illustration:
(1) the leaf set formula alternatives for the brand a leaf set are shown in table 1, with the minimum pyrolytic difference between a yunyan 87 (2018; flue-cured tobacco; guizhou graduate; tobacco lamina; C2L) sample (target leaf) and a to-be-replaced sample, carthamus tinctorius (2018; flue-cured tobacco; yunnan university; tobacco lamina; C3F) (to-be-replaced leaf) in the database, with an RMSE of 1.46, being the preferred alternative 1. The degree of pyrolytic difference RMSE of the alternative substitute 2 (2017; flue-cured tobacco; Heilongjiang; tobacco lamina; X2L) and the sample safflower Hongda Yuan (2018; flue-cured tobacco; Yunnan Dali; tobacco lamina; C3F) to be replaced is 1.73.
TABLE 1
According to the calculation results, further carrying out verification by adopting a sensory evaluation method, wherein the sample to be replaced is marked as A-0, the first replacement 1 is marked as A-1, the alternative replacement 2 is marked as A-2, and the verification results are shown in tables 2 and 3.
TABLE 2
TABLE 3
(2) The leaf set formula alternatives for brand B leaf set are shown in table 4, with the minimum pyrolytic difference between the first alternative 1 (2019; flue-cured tobacco; liaoning; tobacco lamina; B3F) sample and the to-be-replaced sample yunya 87 (2018; flue-cured tobacco; guizhou zunyi; tobacco lamina; C3F) in the database, with a RMSE of 1.44. Alternative substitute 2 is that the pyrolysis difference RMSE of the cloud cigarette 87 (2017; flue-cured tobacco; Guizhou Bijie gener; sheet tobacco; C3F) and the to-be-substituted sample cloud cigarette 87 (2017; flue-cured tobacco; Guizhou Bijie gener; sheet tobacco; C3F) is 1.5.
TABLE 4
According to the calculation results, a sensory evaluation method is adopted to further carry out verification, the sample to be replaced is marked as B-0, the first replacement 1 is marked as B-1, the alternative replacement 2 is marked as B-2, and the verification results are shown in tables 5 and 6.
TABLE 5
TABLE 6
(3) The alternative scheme of the leaf group formula of the leaf group of brand C is shown in Table 7, wherein the pyrolysis difference between a first-selected substitute 1 Yunyan 87 (2019; flue-cured tobacco; Chenzhou Guiyang; tobacco lamina; C2F) sample and a to-be-replaced sample Yunyan 87 (2019; flue-cured tobacco; Chenzhou Guiyang; tobacco lamina; C2F) in a database is minimum, the RMSE is 1.31, and the pyrolysis difference between a second-selected substitute 2 (2019; flue-cured tobacco; Chongqing; tobacco lamina; C3L) and a to-be-replaced sample Yunyan 87 (2019; flue-cured tobacco; Chenzhou Guiyang in Hunan province; tobacco lamina; C2F) is 1.96.
TABLE 7
According to the calculation results, further verification is carried out by adopting a sensory evaluation method, the sample to be replaced is marked as C-0, the first replacement 1 is marked as C-1, the alternative replacement 2 is marked as C-2, and the verification results are shown in tables 8 and 9.
TABLE 8
TABLE 9
In conclusion, the tobacco raw material quality evaluation technology is utilized to maintain A, B and C leaf group formulas of three different brand leaf groups, and sensory evaluation results show that although slight differences exist in aspects of aroma, sweetness and the like, a substitute formula (whether a first substitute or a second substitute) and an original formula (a sample to be replaced) have basically consistent style and quality level, so sensory evaluation experiments further prove the feasibility and better application effect of the technical scheme of the embodiment of the invention on leaf group formula maintenance and application.
According to the technical scheme, the leaf group formula is maintained by utilizing the micro-quotient thermogravimetric curve and the root mean square error, complex pretreatment is not needed, any chemical reagent is not used, the system error and the human error are greatly reduced, and the leaf group maintenance efficiency is greatly improved by analyzing a large number of samples.
Example four
Fig. 4 is a schematic structural diagram of a tobacco replacing device provided in the fourth embodiment of the present invention, where the device includes: a derivative thermogravimetric curve obtaining module 310, a pyrolysis difference determining module 320 and a target tobacco leaf determining module 330.
The micro quotient thermogravimetric curve acquiring module 310 is configured to acquire a micro quotient thermogravimetric curve of the tobacco leaves to be replaced and micro quotient thermogravimetric curves of at least two tobacco leaves to be selected; determining the micro-quotient thermogravimetric curves of the at least two tobacco leaves to be selected from a pre-established tobacco leaf micro-quotient thermogravimetric curve database; the pyrolysis difference determining module 320 is configured to determine, for each to-be-selected tobacco leaf, a pyrolysis difference between the to-be-replaced tobacco leaf and the to-be-selected tobacco leaf based on a differential quotient thermogravimetry curve of the to-be-replaced tobacco leaf and a differential quotient thermogravimetry curve of the to-be-selected tobacco leaf; wherein the pyrolysis variance is determined based on a root mean square error algorithm; and the target tobacco leaf determining module 330 is configured to determine a target tobacco leaf corresponding to the tobacco leaf to be replaced according to the pyrolysis difference corresponding to each tobacco leaf to be selected.
Optionally, the pyrolysis difference determining module 320 is further configured to determine the pyrolysis difference between the tobacco leaf to be replaced and the tobacco leaf to be selected based on the following formula:
wherein RMSE represents the pyrolysis difference degree between the tobacco leaves to be replaced and the tobacco leaves to be selected, N represents the total point number recorded in the micro-quotient thermogravimetric curve, i represents the ith data point in the micro-quotient thermogravimetric curve,
represents the first derivative of the thermogravimetric curve collected by the thermogravimetric analyzer, also represents the numerical value of the differential thermogravimetric curve, and also represents the mass loss rate,
representing the mass loss rate of the tobacco leaf to be selected at the ith data point,
representing the mass loss rate of the tobacco leaf to be replaced at the ith data point.
Optionally, the apparatus further comprises: the database construction module is used for processing the tobacco leaves to be measured according to preset processing conditions, and measuring the tobacco leaves to be measured by a thermogravimetric analyzer based on preset parameters to obtain a thermogravimetric curve corresponding to the tobacco leaves to be measured; the preset processing conditions comprise at least one of a pretreatment rule, a drying temperature, a drying time, a water content and a grinding rule, and the preset parameters comprise at least one of a heating rate, a nitrogen atmosphere flow and a temperature interval; and solving a first derivative of the thermogravimetric curve corresponding to the tobacco leaves to be measured to obtain a micro-quotient thermogravimetric curve corresponding to the tobacco leaves to be measured, and constructing a tobacco leaf micro-quotient thermogravimetric curve database based on the tobacco leaves to be measured and the micro-quotient thermogravimetric curve corresponding to the tobacco leaves to be measured.
Optionally, the pretreatment rule is that the raw materials are sealed and stored at the temperature of 22 ℃ and the humidity of 60% for 48 hours, the drying temperature is 40 ℃, the drying time is 2 hours, the water content is 6% to 8%, and the grinding rule is that powder grinding and powder sieving are performed; the heating rate is 20K/min, the flow rate of the nitrogen atmosphere is 20mL/min, and the temperature range is 30-1000 ℃.
Optionally, the pyrolysis difference determining module 320 is further configured to determine at least two weight loss temperature intervals based on a derivative thermogravimetric curve of the tobacco leaves to be replaced; determining the sub-pyrolysis difference degree between the tobacco leaves to be replaced and the tobacco leaves to be selected in each weight loss temperature interval according to the micro-quotient thermogravimetry curve of the tobacco leaves to be replaced and the micro-quotient thermogravimetry curve of the tobacco leaves to be selected; and determining the pyrolysis difference degree between the tobacco leaves to be replaced and the tobacco leaves to be selected based on the pyrolysis difference degrees of the sub-tobacco leaves.
Optionally, the apparatus further comprises: and the to-be-replaced tobacco leaf determining module is used for determining the stored tobacco leaves as the to-be-replaced tobacco leaves if the stock of at least one stored tobacco leaves can not meet the use requirement.
Optionally, the apparatus further comprises: the target tobacco leaf group determining module is used for determining each tobacco leaf to be replaced in the tobacco leaf group to be replaced and a tobacco leaf candidate list corresponding to each tobacco leaf to be replaced; the tobacco leaf group to be replaced comprises at least two tobacco leaves to be replaced, and each tobacco leaf candidate list comprises at least two target tobacco leaves corresponding to one tobacco leaf to be replaced; determining a to-be-selected tobacco leaf group corresponding to the to-be-replaced tobacco leaf group according to each tobacco leaf candidate list; for each group of to-be-selected tobacco leaf group, determining the pyrolysis difference degree between the to-be-replaced tobacco leaf group and the to-be-selected tobacco leaf group based on the micro-quotient thermogravimetry curve of the to-be-replaced tobacco leaf group and the micro-quotient thermogravimetry curve of the to-be-selected tobacco leaf group; and determining a target tobacco leaf group corresponding to the tobacco leaf group to be replaced according to the pyrolysis difference degree corresponding to each tobacco leaf group to be selected.
According to the technical scheme of the embodiment of the invention, the micro-quotient thermogravimetric curve of the tobacco leaves to be replaced and the micro-quotient thermogravimetric curves of at least two tobacco leaves to be selected are obtained through the pre-established tobacco leaf micro-quotient thermogravimetric curve database, the pyrolysis difference degree between the tobacco leaves to be replaced and the tobacco leaves to be selected is determined for each tobacco leaf to be selected based on the micro-quotient thermogravimetric curve of the tobacco leaves to be replaced and the micro-quotient thermogravimetric curve of the tobacco leaves to be selected, and the target tobacco leaves corresponding to the tobacco leaves to be replaced are determined according to the pyrolysis difference degree corresponding to each tobacco leaf to be selected, so that the problems of information loss caused by chemical component analysis and high subjectivity and large error caused by manual evaluation and analysis are solved, the workload of manual work is reduced, and the effects of objectivity and consistency of tobacco leaf evaluation are improved.
The tobacco replacing device provided by the embodiment of the invention can execute the tobacco replacing method provided by any embodiment of the invention, and has corresponding functional modules and beneficial effects of the executing method.
It should be noted that, the units and modules included in the apparatus are merely divided according to functional logic, but are not limited to the above division as long as the corresponding functions can be implemented; in addition, specific names of the functional units are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the embodiment of the invention.
EXAMPLE five
Fig. 5 is a schematic structural diagram of an electronic device according to a fifth embodiment of the present invention. FIG. 5 illustrates a block diagram of an exemplary electronic device 40 suitable for use in implementing embodiments of the present invention. The electronic device 40 shown in fig. 5 is only an example, and should not bring any limitation to the functions and the scope of use of the embodiment of the present invention.
As shown in fig. 5, electronic device 40 is embodied in the form of a general purpose computing device. The components of electronic device 40 may include, but are not limited to: one or more processors or processing units 401, a system memory 402, and a bus 403 that couples the various system components (including the system memory 402 and the processing unit 401).
The system memory 402 may include computer system readable media in the form of volatile memory, such as Random Access Memory (RAM)404 and/or cache 405. The electronic device 40 may further include other removable/non-removable, volatile/nonvolatile computer system storage media. By way of example only, storage system 406 may be used to read from and write to non-removable, nonvolatile magnetic media (not shown in FIG. 5, commonly referred to as a "hard drive"). Although not shown in FIG. 5, a magnetic disk drive for reading from and writing to a removable, nonvolatile magnetic disk (e.g., a "floppy disk") and an optical disk drive for reading from or writing to a removable, nonvolatile optical disk (e.g., a CD-ROM, DVD-ROM, or other optical media) may be provided. In these cases, each drive may be connected to the bus 403 by one or more data media interfaces. System memory 402 may include at least one program product having a set (e.g., at least one) of program modules that are configured to carry out the functions of embodiments of the invention.
A program/utility 408 having a set (at least one) of program modules 407 may be stored, for example, in system memory 402, such program modules 407 including, but not limited to, an operating system, one or more application programs, other program modules, and program data, each of which examples or some combination thereof may comprise an implementation of a network environment. Program modules 407 generally perform the functions and/or methods of the described embodiments of the invention.
The electronic device 40 may also communicate with one or more external devices 409 (e.g., keyboard, pointing device, display 410, etc.), with one or more devices that enable a user to interact with the electronic device 40, and/or with any devices (e.g., network card, modem, etc.) that enable the electronic device 40 to communicate with one or more other computing devices. Such communication may be performed through an I/O interface (input/output interface) 411. Also, the electronic device 40 may communicate with one or more networks (e.g., a Local Area Network (LAN), a Wide Area Network (WAN), and/or a public network, such as the internet) via the network adapter 412. As shown, the network adapter 412 communicates with the other modules of the electronic device 40 over the bus 403. It should be appreciated that although not shown in FIG. 5, other hardware and/or software modules may be used in conjunction with electronic device 40, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage systems, among others.
The processing unit 401 executes various functional applications and data processing by executing programs stored in the system memory 402, for example, to implement the tobacco replacement method provided by the embodiment of the present invention.
EXAMPLE six
A sixth embodiment of the present invention further provides a storage medium containing computer-executable instructions, which when executed by a computer processor, are configured to perform a tobacco leaf replacement method, the method including:
acquiring a micro-quotient thermogravimetric curve of the tobacco leaves to be replaced and micro-quotient thermogravimetric curves of at least two tobacco leaves to be selected; determining the micro-quotient thermogravimetric curves of the at least two tobacco leaves to be selected from a pre-established tobacco leaf micro-quotient thermogravimetric curve database;
for each tobacco leaf to be selected, determining the pyrolysis difference degree between the tobacco leaf to be replaced and the tobacco leaf to be selected based on the micro-quotient thermogravimetry curve of the tobacco leaf to be replaced and the micro-quotient thermogravimetry curve of the tobacco leaf to be selected; wherein the pyrolysis variance is determined based on a root mean square error algorithm;
and determining the target tobacco leaves corresponding to the tobacco leaves to be replaced according to the pyrolysis difference degree corresponding to each tobacco leaf to be selected.
Computer storage media for embodiments of the invention may employ any combination of one or more computer-readable media. The computer readable medium may be a computer readable signal medium or a computer readable storage medium. A computer readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples (a non-exhaustive list) of the computer readable storage medium would include the following: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In the context of this document, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.
A computer readable signal medium may include a propagated data signal with computer readable program code embodied therein, for example, in baseband or as part of a carrier wave. Such a propagated data signal may take any of a variety of forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A computer readable signal medium may also be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.
Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.
Computer program code for carrying out operations for embodiments of the present invention may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, Smalltalk, C + + or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or the connection may be made to an external computer (for example, through the Internet using an Internet service provider).
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. A method of tobacco leaf replacement, comprising:
acquiring a micro-quotient thermogravimetric curve of the tobacco leaves to be replaced and micro-quotient thermogravimetric curves of at least two tobacco leaves to be selected; determining the micro-quotient thermogravimetric curves of the at least two tobacco leaves to be selected from a pre-established tobacco leaf micro-quotient thermogravimetric curve database;
for each tobacco leaf to be selected, determining the pyrolysis difference degree between the tobacco leaf to be replaced and the tobacco leaf to be selected based on the micro-quotient thermogravimetry curve of the tobacco leaf to be replaced and the micro-quotient thermogravimetry curve of the tobacco leaf to be selected; wherein the pyrolysis variance is determined based on a root mean square error algorithm;
and determining the target tobacco leaves corresponding to the tobacco leaves to be replaced according to the pyrolysis difference degree corresponding to each tobacco leaf to be selected.
2. The method according to claim 1, wherein the determining the pyrolysis difference degree between the tobacco leaf to be replaced and the selected tobacco leaf based on the derivative thermogravimetric curve of the tobacco leaf to be replaced and the derivative thermogravimetric curve of the tobacco leaf to be selected comprises:
determining a pyrolysis difference between the tobacco leaf to be replaced and the tobacco leaf to be selected based on the following formula:
wherein RMSE represents the pyrolysis difference degree between the tobacco leaves to be replaced and the tobacco leaves to be selected, N represents the total point number recorded in the micro-quotient thermogravimetric curve, i represents the ith data point in the micro-quotient thermogravimetric curve,
represents the first derivative of the thermogravimetric curve collected by the thermogravimetric analyzer, also represents the numerical value of the differential thermogravimetric curve, and also represents the mass loss rate,
representing the mass loss rate of the tobacco leaf to be selected at the ith data point,
representing the mass loss rate of the tobacco leaf to be replaced at the ith data point.
3. The method of claim 1, further comprising:
processing tobacco leaves to be measured according to preset processing conditions, and measuring the tobacco leaves to be measured by a thermogravimetric analyzer based on preset parameters to obtain a thermogravimetric curve corresponding to the tobacco leaves to be measured; the preset processing conditions comprise at least one of a pretreatment rule, a drying temperature, a drying time, a water content and a grinding rule, and the preset parameters comprise at least one of a heating rate, a nitrogen atmosphere flow and a temperature interval;
and solving a first derivative of the thermogravimetric curve corresponding to the tobacco leaves to be measured to obtain a micro-quotient thermogravimetric curve corresponding to the tobacco leaves to be measured, and constructing a tobacco leaf micro-quotient thermogravimetric curve database based on the tobacco leaves to be measured and the micro-quotient thermogravimetric curve corresponding to the tobacco leaves to be measured.
4. The method according to claim 3, wherein the pre-treatment rule is that the material is sealed and stored under the conditions of temperature 22 ℃ and humidity 60% for 48 hours, the drying temperature is 40 ℃, the drying time is 2 hours, the water content is 6-8%, the grinding rule is that the material is ground and the powder is sieved; the heating rate is 20K/min, the flow rate of the nitrogen atmosphere is 20mL/min, and the temperature range is 30-1000 ℃.
5. The method according to claim 1, wherein the determining the pyrolysis difference degree between the tobacco leaf to be replaced and the selected tobacco leaf based on the derivative thermogravimetric curve of the tobacco leaf to be replaced and the derivative thermogravimetric curve of the tobacco leaf to be selected comprises:
determining at least two weight loss temperature intervals based on the derivative thermogravimetric curve of the tobacco leaves to be replaced;
determining a sub-pyrolysis difference degree between the tobacco leaves to be replaced and the selected tobacco leaves in each weightlessness temperature interval according to the derivative thermogravimetric curve of the tobacco leaves to be replaced and the derivative thermogravimetric curve of the tobacco leaves to be selected;
and determining the pyrolysis difference degree between the tobacco leaves to be replaced and the tobacco leaves to be selected based on the pyrolysis difference degrees of the sub-tobacco leaves.
6. The method of claim 1, further comprising:
and if the stock of at least one stock tobacco leaf cannot meet the use requirement, determining the stock tobacco leaf as the tobacco leaf to be replaced.
7. The method of claim 1, further comprising:
determining each tobacco leaf to be replaced in the tobacco leaf group to be replaced and a tobacco leaf candidate list corresponding to each tobacco leaf to be replaced; the tobacco leaf group to be replaced comprises at least two tobacco leaves to be replaced, and each tobacco leaf candidate list comprises at least two target tobacco leaves corresponding to one tobacco leaf to be replaced;
determining a to-be-selected tobacco leaf group corresponding to the to-be-replaced tobacco leaf group according to each tobacco leaf candidate list;
for each group of to-be-selected tobacco leaf group, determining the pyrolysis difference degree between the to-be-replaced tobacco leaf group and the to-be-selected tobacco leaf group based on the micro-quotient thermogravimetry curve of the to-be-replaced tobacco leaf group and the micro-quotient thermogravimetry curve of the to-be-selected tobacco leaf group;
and determining a target tobacco leaf group corresponding to the tobacco leaf group to be replaced according to the pyrolysis difference degree corresponding to each tobacco leaf group to be selected.
8. A tobacco leaf replacement device, comprising:
the micro-quotient thermogravimetric curve acquisition module is used for acquiring a micro-quotient thermogravimetric curve of the tobacco leaves to be replaced and micro-quotient thermogravimetric curves of at least two tobacco leaves to be selected; determining the micro-quotient thermogravimetric curves of the at least two tobacco leaves to be selected from a pre-established tobacco leaf micro-quotient thermogravimetric curve database;
the pyrolysis difference degree determining module is used for determining the pyrolysis difference degree between the tobacco leaves to be replaced and the tobacco leaves to be selected based on the derivative thermogravimetric curve of the tobacco leaves to be replaced and the derivative thermogravimetric curve of the tobacco leaves to be selected; wherein the pyrolysis variance is determined based on a root mean square error algorithm;
and the target tobacco leaf determining module is used for determining the target tobacco leaves corresponding to the tobacco leaves to be replaced according to the pyrolysis difference degree corresponding to each tobacco leaf to be selected.
9. An electronic device, characterized in that the electronic device comprises:
one or more processors;
a storage device for storing one or more programs,
when executed by the one or more processors, cause the one or more processors to implement the tobacco replacement method of any one of claims 1-7.
10. A computer-readable storage medium, on which a computer program is stored, which program, when being executed by a processor, is adapted to carry out a method for tobacco replacement according to any one of claims 1-7.
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| CN107860868A (en) * | 2017-11-03 | 2018-03-30 | 福建中烟工业有限责任公司 | Tobacco matching process and system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107860868A (en) * | 2017-11-03 | 2018-03-30 | 福建中烟工业有限责任公司 | Tobacco matching process and system |
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Application publication date: 20220805 |