Cigarette burning and smoking dynamic consistency evaluation method and system

Abstract

The invention provides a cigarette burning and smoking dynamic consistency evaluation method and system. The method comprises the following steps: putting a to-be-detected cigarette under a fixed smoking condition for cigarette smoking and recording to obtain puff-by-puff smoking resistance; obtaining a consistency index of the to-be-detected cigarette according to the draw resistance; obtaining a consistency index threshold value of the cigarette; and determining the number of cigarettes with the consistency index exceeding the consistency index threshold value of the to-be-detected cigarettes, and determining and outputting a cigarette burning and smoking dynamic consistency evaluation index. According to the method, the combustion and smoking dynamic consistency of the cigarette can be evaluated, the difference of smoking feelings of consumers after material replacement, process parameter adjustment or remote production of the cigarette is visually represented, and an important reference is provided for cigarette design and production.

Description

Technical Field

[0001] The present application relates to the technical field of tobacco quality detection, and more specifically, to a method and system for evaluating the dynamic consistency of cigarette burning and smoking. Background Art

[0002] Due to material substitution, process parameter adjustment, or off-site production of cigarettes, it is necessary to evaluate the consistency of cigarette quality. The physical properties of cigarettes are important technical indicators for consistency evaluation, mainly including static physical parameters such as weight, draw resistance, and ventilation. However, static physical parameters cannot fully characterize the overall quality consistency state during the burning and smoking process of cigarette sticks.

[0003] In summary, an improved technical solution is needed to address the deficiencies of the above-mentioned prior art. Summary of the Invention

[0004] The purpose of the embodiments of the present application is to provide a method and system for evaluating the dynamic consistency of cigarette burning and smoking, which can be used to evaluate the change in the quality consistency of cigarette sticks after material substitution, process parameter adjustment, or off-site production of cigarettes.

[0005] In a first aspect, a method for evaluating the dynamic consistency of cigarette burning and smoking is provided, including the following steps:

[0006] Place the cigarette to be tested under fixed suction conditions for cigarette suction and record to obtain the draw resistance of each puff.

[0007] Obtain the consistency index of the cigarette to be tested based on the draw resistance.

[0008] Obtain the consistency index threshold of the cigarette.

[0009] Determine the number of cigarette sticks whose consistency index of the cigarette to be tested exceeds the consistency index threshold, and determine and output the dynamic consistency evaluation index of cigarette burning and smoking.

[0010] In an implementable manner, before performing cigarette suction and recording, the following is also included: placing the cigarette stick in a predetermined environmental condition of constant temperature and humidity for temperature and humidity adjustment.

[0011] In an implementable manner, the predetermined environmental condition includes: setting the temperature to 20 - 24 °C and setting the humidity to 55 - 65%.

[0012] In an implementable manner, obtaining the draw resistance of each puff at least includes the following: recording the instantaneous pressure drop in the air flow channel during each puff, and using the average value of the instantaneous pressure drop within the puff time as the draw resistance P of this puff. ij 。

[0013] In an implementable manner, obtaining the consistency index of the cigarette to be tested based on the draw resistance includes the following:

[0014] According to the suction resistance P of each mouth ij Determine the average draw resistance of the jth port

[0015] According to the suction resistance P of each mouth ij , the average suction resistance of the jth port Calculate the standard deviation SD of the suction resistance of the jth port;

[0016] According to the suction resistance P of each mouth ij , the average suction resistance of the jth port The standard deviation SD of the suction resistance of the jth puff is used to calculate the consistency index S of each puff. ij ;

[0017] According to the consistency index S of each puff ij , calculate the consistency index of each cigarette

[0018] In an practicable manner, the step of obtaining the consistency index threshold of the cigarette includes the following:

[0019] Obtain cigarette samples that meet the consistency evaluation requirements as evaluation benchmark cigarettes;

[0020] Obtain the consistency index of all cigarettes in the evaluation benchmark cigarette

[0021] Consistency index based on all cigarettes Determine the threshold quantile, and determine the consistency index threshold S based on the threshold quantile L .

[0022] In one practicable manner, the consistency index of each cigarette is and consistency index threshold S L For comparison, the statistical consistency index S i Greater than the consistency index threshold S L The number of cigarettes k.

[0023] In one practicable manner, the combustion-inhalation dynamic consistency evaluation index The number of cigarettes to be tested is m.

[0024] In an practicable manner, after obtaining a plurality of burning-inhalation dynamic consistency evaluation indexes R corresponding to different cigarettes, the relationship between the burning-inhalation dynamic consistency of the cigarette and the burning-inhalation dynamic consistency evaluation index R value is a positive correlation.

[0025] According to the second aspect of the present application, there is also provided a cigarette burning dynamic consistency evaluation system, including a memory and a processor. The memory stores a computer program, which when executed by the processor implements the cigarette burning dynamic consistency evaluation method provided in the first aspect.

[0026] Compared with the prior art, the beneficial effects of the present application are as follows:

[0027] In the technical solution of the present application, the burning dynamic consistency of cigarettes can be evaluated, intuitively characterizing the differences in consumers' smoking experiences after cigarette material substitution, process parameter adjustment, or production in different locations, providing an important reference for cigarette design and production. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a flowchart of the cigarette burning dynamic consistency evaluation method according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] The following further details the specific embodiments of the present invention with reference to the accompanying drawings. These embodiments are only for illustrating the present invention and are not intended to limit the present invention.

[0030] In addition, in the description of the present invention, unless otherwise specified, "a plurality of" means two or more.

[0031] According to the first aspect of the present application, referring to Figure 1 , first, a cigarette burning dynamic consistency evaluation method is provided, including the following steps:

[0032] S1. Sampling the cigarette to be tested.

[0033] Select a type of cigarette and randomly select i cigarettes, where i = 1, 2, 3,... m.

[0034] S2. Place the selected cigarette in a predetermined environmental condition of constant temperature and humidity for temperature and humidity adjustment to eliminate the differences in temperature and humidity and ensure the accuracy of the detection.

[0035] In an implementable manner, the predetermined environmental condition includes: setting the temperature to 20 - 24 °C and setting the humidity to 55 - 65%.

[0036] It should be noted that in this embodiment, the predetermined environmental condition is a temperature of 22 °C and a humidity of 60% RH.

[0037] S3. Place the cigarette under fixed suction conditions for cigarette suction and record.

[0038] Specifically, each cigarette is suctioned j times, where j = 1, 2, 3,... n.

[0039] S4. Obtain the draw resistance for each puff based on the cigarette smoking data and perform statistics.

[0040] Specifically, record the instantaneous pressure drop in the air flow channel during each puff, and use the average value of the instantaneous pressure drop within the puffing time of each puff as the draw resistance P of this puff. ij .

[0041] S5. Obtain the consistency index of the cigarette based on the draw resistance.

[0042] In an implementable manner, step S5 includes at least the following content:

[0043] S51. Determine the average draw resistance of the j-th puff according to the draw resistance of each puff. It is:

[0044]

[0045] S52. Calculate the standard deviation SD(P of the draw resistance of the j-th puff. j ) It is:

[0046]

[0047] S53. Calculate the consistency index S of each puff. ij It is:

[0048]

[0049] S54. Calculate the consistency index of each cigarette. It is:

[0050]

[0051] S6. Determine the threshold value S of the consistency index. L .

[0052] In an implementable manner, step S6 includes at least the following content:

[0053] S61. Obtain cigarette samples that meet the consistency evaluation, and use the cigarette samples as the reference cigarettes for evaluation.

[0054] It should be noted that the cigarette samples that meet the consistency evaluation include, but are not limited to: key brand cigarettes stably produced by the enterprise, cigarettes produced under the original process parameters, or cigarettes produced before the material replacement.

[0055] S62. Repeat steps S1 to S5 to obtain the consistency index of all cigarettes in the reference cigarettes for evaluation.

[0056] S63. Determine the threshold quantile according to the target evaluation requirements. Including, but not limited to: 90% quantile, 95% quantile.

[0057] S64, sorting the consistency index of the cigarette samples, and taking the consistency index at the threshold quantile position as the consistency index threshold S L .

[0058] S7. Determine the number of cigarettes that is greater than a consistency index threshold.

[0059] The consistency index S of each cigarette i and consistency index threshold S L For comparison, the statistical consistency index S i Greater than S L The number of cigarettes is recorded as k.

[0060] S8. Determine the combustion and smoking dynamic consistency evaluation index based on the number of cigarettes that is greater than the consistency index threshold.

[0061] The combustion-intake dynamic consistency evaluation index R is calculated as:

[0062]

[0063] After step S8, the following contents are also included:

[0064] After obtaining multiple combustion and inhalation dynamic consistency evaluation indexes R corresponding to different cigarettes, the relationship between the combustion and inhalation dynamic consistency of the cigarette and the combustion and inhalation dynamic consistency evaluation index R value is positively correlated. When the consistency evaluation index R is relatively large, the combustion and inhalation dynamic consistency of the cigarette is relatively good.

[0065] This application also provides specific embodiments:

[0066] Embodiment 1:

[0067] In this embodiment, the dynamic consistency of burning and smoking of two cigarettes from different origins is evaluated.

[0068] S1. Randomly smoke 45 cigarettes of a certain brand produced in production areas P and T, respectively. P is the original production area, and T is the production area after transfer.

[0069] S2. The temperature and humidity are adjusted at a constant temperature and humidity of 22° C. and 60% RH for 48 hours.

[0070] S3. Use a smoking machine to smoke cigarettes from origin P and origin T respectively under standard smoking conditions, taking 6 puffs on each cigarette.

[0071] It should be noted that the suction capacity was 35 mL, the suction duration was 2 s, the suction interval was 60 s, and a bell-shaped suction curve was used for suction.

[0072] S4. Record the inhalation resistance of each puff, as shown in Table 1 and Table 2.

[0073] Table 1 Draw resistance of each puff of cigarettes from production area P

[0074]

[0075]

[0076] Table 2 Draw resistance of each puff of cigarettes from production area T

[0077]

[0078]

[0079] S5. Calculate the consistency index of each cigarette

[0080] Table 3 Average draw resistance of each puff of cigarettes from production area P and standard deviation of draw resistance SD

[0081]

[0082] Table 4 Consistency index S of each puff of cigarettes from production area P ij and consistency index of each cigarette

[0083]

[0084]

[0085] Table 5 Average draw resistance of each puff of cigarettes from production area T and standard deviation of draw resistance SD

[0086]

[0087] Table 6 Consistency index S of each puff of cigarettes from production area T ij and consistency index of each cigarette

[0088]

[0089]

[0090] S6. Determine the threshold of the consistency index

[0091] Specifically, based on the cigarette data produced in the original production area P, select the 95% quantile of the consistency index data of the cigarettes produced in the original production area P as the consistency index threshold S L , the consistency index threshold S in this embodiment L is taken as 1.578

[0092] S7. Count the number of cigarettes exceeding the consistency index threshold.

[0093] Among all the tested cigarettes from origin P, 3 cigarettes had consistency indexes exceeding the threshold, as shown in Table 4, namely, cigarettes with serial numbers 10, 28, and 37. Among all the tested cigarettes from origin T, 5 cigarettes had consistency indexes exceeding the consistency index threshold, as shown in Table 6, namely, cigarettes with serial numbers 1, 10, 19, 29, and 37.

[0094] S8. Determine the dynamic consistency evaluation index of burning and smoking. A total of 45 cigarettes were tested in production area P, and the consistency index exceeded the threshold for 3 cigarettes. The consistency evaluation index R P for:

[0095]

[0096] A total of 45 cigarettes were tested in origin T, and the consistency index exceeded the consistency index threshold for 5 cigarettes. T for:

[0097]

[0098] The dynamic consistency evaluation index of burning and smoking of cigarettes from origin T is lower than that of cigarettes from origin P. Therefore, the quality consistency of cigarettes of this product produced in origin T is poorer than that of cigarettes produced in origin P.

[0099] Embodiment 2:

[0100] In this embodiment, the combustion and smoking dynamic consistency of the same type of cigarette is evaluated before and after the process parameters are adjusted.

[0101] S1. Randomly smoke 20 cigarettes A and 20 cigarettes B, respectively. Cigarette A is the cigarette before the process parameters are adjusted, and cigarette B is the cigarette after the process parameters are adjusted.

[0102] S2. The temperature and humidity are adjusted at a constant temperature and humidity of 22° C. and 60% RH for 48 hours.

[0103] S3. Use a smoking machine to smoke cigarette A and cigarette B respectively under standard smoking conditions, and take 6 puffs of each cigarette.

[0104] It should be noted that the suction capacity was 35 mL, the suction duration was 2 s, the suction interval was 60 s, and a bell-shaped suction curve was used for suction.

[0105] S4. Record the inhalation resistance of each puff, as shown in Tables 7 and 8.

[0106] Table 7 Puff resistance of cigarette A

[0107]

[0108]

[0109] Table 8 Draw resistance of each puff of cigarette B

[0110]

[0111] S5. Calculate the consistency index of each cigarette

[0112] Table 9 Average draw resistance of each puff of cigarette A and draw resistance standard deviation SD

[0113]

[0114] Table 10 Consistency index S of each puff of cigarette A ij and consistency index of each cigarette

[0115] Cigarette serial number The 1st puff The 2nd puff The 3rd puff The 4th puff The 5th puff The 6th puff Average index 1 1.837 0.631 0.348 0.913 0.306 0.340 0.729 2 0.577 0.053 0.903 0.695 0.860 1.223 0.718 3 1.272 1.151 0.748 0.312 2.203 1.038 1.121 4 0.580 0.936 0.159 0.553 1.207 1.021 0.743 5 0.478 0.620 0.675 1.229 0.359 1.511 0.812 6 0.687 1.056 0.420 1.241 1.266 1.158 0.972 7 0.602 0.136 0.389 1.065 0.113 0.480 0.464 8 0.555 1.253 0.924 1.307 1.732 1.727 1.249 9 0.687 0.111 0.872 0.411 0.501 0.312 0.482 10 0.114 0.791 0.503 0.716 0.492 0.349 0.494 11 1.528 1.336 2.829 1.240 0.386 0.816 1.356 12 0.357 0.096 0.551 0.673 0.041 0.399 0.353 13 1.922 1.653 0.520 0.465 0.949 1.514 1.171 14 0.294 0.882 0.231 0.771 0.104 0.539 0.470 15 1.095 0.969 0.665 0.169 2.014 1.528 1.073 16 0.051 1.809 0.717 0.203 0.237 0.749 0.628 17 1.859 1.744 2.208 1.459 0.395 0.225 1.315 18 0.037 0.002 0.334 0.826 0.510 0.873 0.430 19 0.360 0.158 0.493 0.267 0.991 0.861 0.522 20 0.669 0.304 0.110 2.224 0.226 0.595 0.688

[0116] Table 11 Average draw resistance of each puff of cigarette B and draw resistance standard deviation SD

[0117]

[0118] Table 12 Consistency index S of each puff of cigarette B ij and consistency index of each cigarette

[0119]

[0120]

[0121] S6. Determine the threshold of the consistency index

[0122] In this embodiment, based on the cigarette data of the 13th brand in stable production, the consistency index data of the 13th brand of cigarettes is obtained according to the above steps. And the consistency index at the 90% quantile position of the consistency index data of the 13th brand of cigarettes is taken as the consistency index threshold S L , at this time S L takes 1.176

[0123] S7. Count the number of cigarettes exceeding the consistency index threshold

[0124] Among all the tested cigarette sticks of Cigarette A, 4 cigarette sticks had a consistency index exceeding the consistency index threshold. As shown in Table 10, they were the cigarette sticks with serial numbers 8, 11, and 17. Among all the tested cigarette sticks of Cigarette B, 2 cigarette sticks had a consistency index exceeding the consistency index threshold. As shown in Table 12, they were the cigarette sticks with serial numbers 1 and 17.

[0125] S8. Determine the combustion and inhalation dynamic consistency evaluation index. A total of 20 cigarette sticks of Cigarette A were tested, and 4 cigarette sticks had a consistency index exceeding the threshold. The consistency evaluation index R A is:

[0126]

[0127] A total of 20 cigarette sticks of Cigarette B were tested, and 2 cigarette sticks had a consistency index exceeding the threshold. The consistency evaluation index R B is:

[0128]

[0129] The combustion and inhalation dynamic consistency evaluation index of the cigarette sticks of Cigarette B is greater than that of the cigarette sticks of Cigarette A. Therefore, the quality consistency of the cigarette sticks of Cigarette B after the process parameter adjustment is better than that of Cigarette A before the process parameter adjustment.

[0130] According to the second aspect of the present application, there is also provided a cigarette combustion and inhalation dynamic consistency evaluation system, including a memory and a processor. The memory stores a computer program, and when the program is executed by the processor, it implements the cigarette combustion and inhalation dynamic consistency evaluation method provided in the first aspect.

[0131] In summary, the present application uses the change in the draw resistance of each puff during the cigarette smoking process to characterize the dynamic physical properties during combustion and inhalation, simulates the dynamic change of the consumer's smoking experience, and is used to evaluate the quality consistency of cigarette sticks after material substitution, process parameter adjustment, or production in different locations, as a supplement to the existing cigarette quality consistency evaluation method. The present application can evaluate the combustion and inhalation dynamic consistency of cigarettes, intuitively characterize the differences in the consumer's smoking experience of cigarettes after material substitution, process parameter adjustment, or production in different locations, and provide an important reference for cigarette design and production.

[0132] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and substitutions can be made, and these improvements and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. A method for evaluating the dynamic consistency of cigarette burning and smoking, characterized in that, Including the following steps: Place the cigarette to be tested under fixed suction conditions for cigarette suction and record, and obtain the draw resistance for each puff; Obtain the consistency index of the cigarette to be tested according to the draw resistance; Obtain the threshold value of the consistency index of the cigarette; Determine the number of cigarette sticks whose consistency index of the cigarette to be tested exceeds the threshold value of the consistency index, and determine the cigarette burning dynamic consistency evaluation index and output it.

2. The cigarette burning dynamic consistency evaluation method according to claim 1, wherein Before performing cigarette suction and recording, the following contents are also included: Place the cigarette stick in a predetermined environmental condition of constant temperature and humidity for temperature and humidity adjustment.

3. The cigarette burning dynamic consistency evaluation method according to claim 2, wherein The predetermined environmental condition includes: the set temperature is 20-24°C, and the set humidity is 55-65%.

4. The cigarette burning and smoking dynamic consistency evaluation method according to claim 3, wherein The obtaining of the draw resistance for each puff at least includes the following contents: Record the instantaneous pressure drop in the air flow channel during each puff, and use the mean value of the instantaneous pressure drop within the puff time as the draw resistance P of this puff ij 。 5. The cigarette burning and smoking dynamic consistency evaluation method according to claim 4, wherein The obtaining of the consistency index of the cigarette to be tested according to the draw resistance includes the following contents: According to the draw resistance P of each puff ij Determine the average draw resistance of the j-th puff According to the draw resistance P of each puff ij and the average draw resistance of the j-th puff calculate the standard deviation SD of the draw resistance of the j-th puff; According to the suction resistance P of each mouth ij , the average suction resistance of the jth port The standard deviation SD of the suction resistance of the jth puff is used to calculate the consistency index S of each puff. ij ; According to the consistency index S for each puff ij , calculate the consistency index for each cigarette 6. The method for evaluating the dynamic consistency of cigarette burning and smoking according to claim 5, wherein The obtaining of the threshold value of the consistency index of the cigarette includes the following contents: Obtain a cigarette sample that meets the consistency evaluation as the reference cigarette for evaluation; Obtain the consistency index of all cigarettes in the reference cigarette for evaluation Consistency index based on all cigarettes Determine the threshold quantile and determine the consistency index threshold S according to the threshold quantile L .

7. The cigarette burning and smoking dynamic consistency evaluation method according to claim 6, wherein Compare the consistency index of each cigarette with the consistency index threshold S L and count the number k of cigarettes with the consistency index S i greater than the consistency index threshold S L .

8. The cigarette burning dynamic consistency evaluation method according to claim 7, wherein Dynamic consistency evaluation index for smoking where the number of cigarette sticks to be tested is m.

9. The cigarette burning dynamic consistency evaluation method according to claim 1, characterized in that After obtaining multiple cigarette burning dynamic consistency evaluation indexes R corresponding to different cigarettes, the relationship between the cigarette burning dynamic consistency and the value of the cigarette burning dynamic consistency evaluation index R is a positive correlation.

10. A cigarette burning dynamic consistency evaluation system, characterized in that, Including a memory and a processor, the memory stores a computer program, and when the program is executed by the processor, it implements the cigarette burning dynamic consistency evaluation method according to any one of claims 1 to 9.

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