阅读说明：本技术 一种表征全规格卷烟燃烧锥立体形态的方法 (Method for representing three-dimensional shape of combustion cone of full-specification cigarette ) 是由 王晓斌 倪和朋 马立 舒云波 郑方 朱绍胤 马俊 张瑞华 陈家明 邓杨超 陶寅莹 于 2020-04-23 设计创作，主要内容包括：本发明公开了一种表征全规格卷烟燃烧锥立体形态的方法,属于卷烟燃烧状态表征技术领域,所述的表征全规格卷烟燃烧锥立体形态的方法包括以下步骤,步骤1：提取待测烟支样品,步骤2：选择烟支待测位置,步骤3,制作成待检测点的燃烧锥,步骤4,对燃烧锥进行拍摄,计算燃烧锥的立体高度和立体面积,步骤5：计算出燃烧锥的凹凸值,本发明不仅可用于燃烧锥形态的立体表征,也为不同规格卷烟产品的燃烧锥形态提供了可比性,为了解卷烟燃烧状态、改善卷烟熄火及燃烧锥掉落倾向、提高卷烟综合质量提供了方法支撑。(The invention discloses a method for representing the three-dimensional shape of a full-specification cigarette combustion cone, belonging to the technical field of representation of cigarette combustion states, and the method for representing the three-dimensional shape of the full-specification cigarette combustion cone comprises the following steps of 1: extracting a cigarette sample to be detected, and step 2: selecting a cigarette to-be-detected position, making a combustion cone to be detected, step 3, shooting the combustion cone, calculating the three-dimensional height and the three-dimensional area of the combustion cone, and step 5: the method can be used for the three-dimensional representation of the combustion cone state, provides comparability for the combustion cone state of cigarette products with different specifications, and provides method support for releasing the cigarette combustion state, improving the cigarette flameout and combustion cone falling tendency and improving the comprehensive quality of cigarettes.)

1. A method for representing the three-dimensional shape of a full-specification cigarette combustion cone is characterized by comprising the following steps: the method for representing the three-dimensional shape of the full-specification cigarette combustion cone comprises the following steps of 1: extracting a cigarette sample to be detected, and step 2: selecting a cigarette to-be-detected position, making a combustion cone to be detected, step 3, shooting the combustion cone, calculating the three-dimensional height and the three-dimensional area of the combustion cone, and step 5: and calculating the concave-convex value of the combustion cone.

2. The method for characterizing the three-dimensional shape of the full-specification cigarette combustion cone according to claim 1, wherein the method comprises the following steps: the step 1: the extraction of the cigarette sample to be detected is realized by adopting the following detailed steps, wherein N cigarette samples to be detected are sampled and balanced for more than 48 hours in the environment with the temperature of 22 +/-2 ℃ and the relative humidity of 60 +/-5%.

3. The method for characterizing the three-dimensional morphology of the full-specification cigarette combustion cone according to claim 1, characterized by: and 2, selecting the position to be detected of the cigarette, selecting the position to be detected, and carrying out marking treatment on the point to be detected.

4. The method for characterizing the three-dimensional morphology of the full-specification cigarette combustion cone according to claim 1, characterized by: and 3, manufacturing a combustion cone of the point to be detected, placing the sample to be detected on the horizontal support, ensuring that the surrounding environment is stable and no air flow interference exists, igniting the cigarettes, quickly extinguishing the cigarettes when the cigarettes are combusted to the marking line, and manufacturing the combustion cone of the point to be detected.

5. The method for characterizing the three-dimensional morphology of the full-specification cigarette combustion cone according to claim 1, characterized by: and 4, shooting the combustion cone, calculating the three-dimensional height and the three-dimensional area of the combustion cone, enabling the cigarette to be perpendicular to the horizontal plane, shooting the cigarette right at the cigarette overlapping line, taking the cigarette overlapping line as a starting point, shooting by rotating 120 degrees clockwise and anticlockwise, collecting images of each combustion cone three times, storing the images into a computer, calculating the height and the area of three surfaces of the combustion cone by using image processing software ImajeJ, and calculating the average value to be used as the three-dimensional height and the three-dimensional area of the combustion cone.

6. The method for characterizing the three-dimensional morphology of the full-specification cigarette combustion cone according to claim 1, characterized by: step 5 calculate the concave-convex value of the combustion cone, and according to the diameter of the cigarette, the height and the area of the combustion cone, calculate the concave-convex value of the combustion cone by the following formula:

in the formula, R is the concave-convex value of the cigarette combustion cone, S is the area of the combustion cone, L is the diameter of the cigarette, H is the height of the combustion cone, and the average value R of N times of detection is (R1+ R2+ R3+ … … + RN)/N and is used as the concave-convex value of the combustion cone of the cigarette product at the selected detection point.

Technical Field

The invention belongs to the technical field of representation of cigarette combustion states, and particularly relates to a method for representing a three-dimensional form of a full-specification cigarette combustion cone.

Background

The cigarette combustion cone is an irregular cone body formed by carbonization in the cigarette combustion process, the shape of the cigarette combustion cone can reflect the cigarette combustion state, the height, the area and the concave-convex degree of the cigarette combustion cone are closely related to the flameout and the falling of the cigarette combustion cone, and meanwhile, the cigarette combustion state directly influences the chemical change in the cigarette combustion process, so that the release and the transfer of cigarette aroma components and the release amount of tar, nicotine and CO are influenced.

Aiming at the characterization method of the cigarette combustion cone state, the characterization method of the three-dimensional state of the cigarette combustion cones with different specifications is not established. Patent CN101769733A discloses a method for measuring the dimension of a cigarette combustion cone state, which characterizes the state of the cigarette combustion cone by measuring the distance from the combustion cone vertex to the combustion line; patent CN109872356A discloses a method for quantitatively evaluating the combustion cone state of a cigarette, which evaluates the combustion cone state of the cigarette by acquiring the cone height, cone area, cone vertex angle, left and right angle values of the combustion cone through image acquisition. The two methods respectively represent the combustion cone from the angles of a line and a surface, the evaluation result is not three-dimensional, and the method is only limited to the representation of the combustion cone of the cigarette products with the same specification and is not suitable for the comparison among the cigarette products with different specifications.

Disclosure of Invention

The invention aims to solve the defects of the existing characterization method and provide a method for characterizing the three-dimensional shape of a full-specification cigarette combustion cone. The method measures the height and the area of the cigarette combustion cone through image processing software, calculates the concave-convex value of the cigarette combustion cone by combining the diameters of cigarettes, eliminates the incomparability of the combustion cone states of the cigarettes with different specifications by introducing the diameters of the cigarettes, is convenient for carrying out quantitative comparison and analysis on the combustion cone states of the cigarettes with different specifications, and simultaneously adopts single-point multi-face detection to calculate the mean value, so that the representation of the value has certain three-dimensional property.

In order to realize the purpose, the invention is realized by adopting the following technical scheme: the method for representing the three-dimensional shape of the full-specification cigarette combustion cone comprises the following steps of 1: extracting a cigarette sample to be detected, and step 2: selecting a cigarette to-be-detected position, making a combustion cone to be detected, step 3, shooting the combustion cone, calculating the three-dimensional height and the three-dimensional area of the combustion cone, and step 5: and calculating the concave-convex value of the combustion cone.

Preferably, the step 1: the extraction of the cigarette sample to be detected is realized by adopting the following detailed steps, wherein N cigarette samples to be detected are sampled and balanced for more than 48 hours in the environment with the temperature of 22 +/-2 ℃ and the relative humidity of 60 +/-5%.

Preferably, the step 2 selects the position to be detected of the cigarette, selects the position to be detected, and performs marking processing on the point to be detected.

Preferably, the combustion cone of the point to be detected is manufactured in the step 3, the sample to be detected is placed on the horizontal support, the stable surrounding environment and no air flow interference are ensured, the cigarette is ignited, the cigarette is rapidly extinguished when the cigarette is burnt to the marking line, and the combustion cone of the point to be detected is manufactured.

Preferably, the step 4 is to photograph the combustion cone, calculate the three-dimensional height and the three-dimensional area of the combustion cone, make the cigarette perpendicular to the horizontal plane, photograph the cigarette lap line once, take photographs clockwise and counterclockwise by respectively rotating 120 degrees with the cigarette lap line as the starting point, acquire images three times for each combustion cone, store the images in the computer, calculate the height and the area of three surfaces of the combustion cone by using the image processing software ImajeJ, and calculate the average value as the three-dimensional height and the three-dimensional area of the combustion cone.

Preferably, the concave-convex value of the combustion cone is calculated in the step 5, and the concave-convex value of the combustion cone is calculated according to the cigarette diameter, the height and the area of the combustion cone by the following formula:

in the formula, R is the concave-convex value of the cigarette combustion cone, S is the area of the combustion cone, L is the diameter of the cigarette, H is the height of the combustion cone, and the average value R of N times of detection is (R1+ R2+ R3+ … … + RN)/N and is used as the concave-convex value of the combustion cone of the cigarette product at the selected detection point.

The invention has the beneficial effects that:

the method measures the height and the area of the cigarette combustion cone through image processing software, calculates the concave-convex value of the cigarette combustion cone by combining the diameters of cigarettes, eliminates the incomparability of the combustion cone states of the cigarettes with different specifications by introducing the diameters of the cigarettes, is convenient for carrying out quantitative comparison and analysis on the combustion cone states of the cigarettes with different specifications, and simultaneously adopts single-point multi-face detection to calculate the mean value, so that the representation of the value has certain three-dimensional property. The method can be used for the three-dimensional representation of the combustion cone state, provides comparability for the combustion cone states of cigarette products with different specifications, and provides method support for releasing the cigarette combustion state, improving the cigarette flameout and combustion cone falling tendency and improving the comprehensive quality of cigarettes.

Drawings

FIG. 1 is a schematic sectional view of front, middle and rear ends of detection;

FIG. 2 is a schematic view of multi-plane detection of the same combustion cone;

FIG. 3 is a schematic view of combustion cone height detection;

FIG. 4 is a schematic view of combustion cone area detection;

fig. 5 is a schematic view showing a concave-convex state of the combustion cone.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the accompanying drawings and examples, which are not intended to limit the present invention.

A method for representing the three-dimensional shape of a full-specification cigarette combustion cone measures and calculates the height and the area of the cigarette combustion cone through image processing software, and simultaneously defines the concave-convex value of the cigarette combustion cone by combining the cigarette diameter, the concave-convex value can be compared with the shape characteristics of the cigarette combustion cones with different specifications, and multi-surface sampling is carried out on the same combustion cone to enable the result to have certain three-dimensional property, and the method comprises the following specific steps:

step 1: sampling N cigarettes to be detected, balancing for more than 48 hours in an environment with the temperature of 22 +/-2 ℃ and the relative humidity of 60 +/-5%, and marking at a point to be detected;

step 2: placing a sample to be detected on a horizontal bracket, ensuring that the surrounding environment is stable and has no air flow interference, igniting cigarettes, and quickly extinguishing the cigarettes when the cigarettes are burnt to the marking line;

and step 3: collecting a digital image of the combustion cone by using a digital camera, storing the digital image into a computer, and calculating the height and the area of the combustion cone by using image processing software Imajej;

and 4, step 4: according to the diameter of the cigarette, the height and the area of the combustion cone, calculating the concave-convex value of the combustion cone by the following formula:

in the formula, R is the concave-convex value of the cigarette combustion cone, S is the area of the combustion cone, L is the diameter of the cigarette, and H is the height of the combustion cone.

In the step 1, the combustible part of the cigarette is equally divided into four equal parts, the lighting end is taken as a starting point, one quarter of the combustible part is taken as a detection front end, two quarters of the combustible part is taken as a detection middle end, and three quarters of the combustible part is taken as a detection rear end.

And 3, enabling the cigarettes to be perpendicular to the horizontal plane, shooting the cigarette lap line for one time, taking the cigarette lap line as a starting point, rotating the cigarette lap line for 120 degrees clockwise and anticlockwise respectively, shooting the cigarette lap line for three times, collecting images of each combustion cone, and calculating the concave-convex value according to the step 4, wherein the average value of the three times is the concave-convex value of the combustion cone.

In step 4, comparing the actually measured area of the combustion cone with the area of the regular triangle under the height, further defining the concave-convex value of the cigarette combustion cone, specifically dividing the transverse concave-convex trend of the cigarette combustion cone into three types, namely a concave trend, a convex trend and a triangular trend, wherein the specific evaluation standard is as follows:

10 cigarettes of fine cigarettes (diameter 5.41mm), medium cigarettes (diameter 6.37mm) and conventional cigarettes (diameter 7.7mm) produced by a certain cigarette factory are respectively sampled and balanced in a constant temperature and humidity box with the temperature of 22 +/-2 ℃ and the relative humidity of 60 +/-5% for 48 hours;

referring to fig. 1, selecting a combustion front end as a detection point, and marking the point to be detected by a marking pen;

ensuring that the detection environment is stable and no air flow interference exists around the detection environment for more than 30 seconds, igniting the cigarettes, placing the cigarettes on a horizontal support, quickly extinguishing the cigarettes by using water when the cigarettes are burnt to the mark line, and removing the cigarette ash attached to the burning cone to finish the manufacturing of the burning cone;

referring to fig. 2, a digital camera is used for picture collection, each combustion cone collects images three times and stores the images in a computer, the heights and the areas of three surfaces of the combustion cones are calculated by using image processing software Imajej according to fig. 3 and 4, an average value is obtained, and the measurement result is shown in table 1;

TABLE 1 Combustion Cone height and area test results

According to the diameter of the cigarette, the height and the area of the combustion cone, calculating the concave-convex value of the combustion cone by the following formula:

in the formula, R is the concave-convex value of the cigarette combustion cone, S is the volume average value of the combustion cone, L is the diameter of the cigarette, and H is the height of the combustion cone.

The calculation results are shown in Table 2:

TABLE 2 calculation results of the combustion cone crown value

The results show that the concave-convex values of the selected samples with the three specifications are all larger than 0, the morphological manifestations are all in a convex shape, wherein the fine cigarettes are most obvious, and the middle cigarettes are least obvious.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention and not to limit it; although the present disclosure has been described in detail with reference to preferred embodiments, those of ordinary skill in the art will understand that: modifications to the embodiments of the disclosure or equivalent substitutions of parts of the technical features may still be made; without departing from the spirit of the present disclosure, it is intended to cover all such modifications as fall within the scope of the claimed subject matter.