Cigar suction resistance measuring method and system and storage medium

Abstract

The invention discloses a cigar draw resistance measuring method and system and a storage medium, and belongs to the cross technical field of computational fluid mechanics and tobacco analysis technology, the draw resistance measuring method comprises the following steps: obtaining a cigar transient aerodynamic system control equation; suction experiments are carried out in the cigar sealing state and the cigar unsealing state respectively, and pressure data under different suction flows are obtained; substituting into a cigar transient aerodynamic system control equation to obtain a corresponding relation between transient pressure and transient flow; obtaining a mapping relation between the transient pressure of the cigar in the sealed state and the transient pressure of the cigar in the unsealed state; the transient actual measurement pressure in the sealed state of the cigar cigarette is obtained, the transient actual measurement pressure in the unsealed state of the cigar cigarette is obtained, and the transient actual measurement pressure in the unsealed state of the cigar cigarette is the suction resistance of the cigar cigarette. According to the invention, nondestructive detection can be carried out on cigars, detection samples can be enlarged, and the accuracy of draw resistance results is improved.

Description

Technical Field

[0001] The invention relates to a method, a system and a storage medium for measuring the draw resistance of cigar smoke, and belongs to the cross-technical field of computational fluid dynamics and tobacco analysis technology. Background Art

[0002] Cigar draw resistance is an important control indicator of cigar quality. Draw resistance is defined as the pressure drop from the inlet to the outlet of the cigarette under standard conditions when the suction flow rate is 17.5ml / s. Appropriate cigar draw resistance can make the smoke stay in the mouth and respiratory tract longer, providing a richer taste and aroma. At the same time, it can reduce the possibility of smoke entering the lungs directly, and better show the unique flavor of cigars. Therefore, accurate and efficient cigar draw resistance measurement is crucial to ensure product quality, optimize the smoking experience, and assess health risks.

[0003] At present, there are two main types of cigar draw resistance tests. One is to test before the cigar is finished. The cigar rolling process is to make the cigar core first, then the cigar wrapper, and then measure the draw resistance. The other is to test after the cigar is finished. That is, on the basis of the first method, the cigar cap is installed and the cigar wrapper is wrapped to form a finished product, and then the cigar cap is cut open for measurement (cigars are different from ordinary cigarettes. The mouthpiece end is not connected. When using, the cigar cap needs to be cut off first). Since the cigar is damaged, it is a destructive test. The first method does not consider the influence of the cigar wrapper, and the cigar wrapper itself has poor air permeability, so the measurement result is quite different from the actual draw resistance. Although the second method is close to the actual draw resistance, it will damage the cigar, resulting in cost waste. In addition, since the draw resistance of cigars is artificially made, there are large differences between samples, and the destructive test of cigars generally selects fewer samples due to cost considerations, so the measurement results of the existing destructive test methods are not very accurate. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the defects of the prior art and provide a method, system and storage medium for measuring the draw resistance of cigars, which can perform non-destructive testing on cigars, expand the test sample and improve the accuracy of the draw resistance results.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0006] In a first aspect, the present invention provides a method for measuring the draw resistance of cigar smoke, using a device for measuring the draw resistance of cigar smoke, the device comprising an exhaust pipe, one end of the exhaust pipe is provided with a sealing portion, the other end is connected to the exhaust port of an exhaust pump, a position on the side of the exhaust pipe close to the sealing portion is connected to the ignition end of the cigar, a second pressure sensor is installed on the side of the exhaust pipe at the ignition end, and a first pressure sensor and a flow meter are installed on the side of the exhaust pipe away from the sealing portion;

[0007] The absorption resistance determination method comprises the following steps:

[0008] The control equations of the cigar transient aerodynamic system are constructed based on the continuity equation, momentum equation and energy equation;

[0009] Performing a suction experiment in a sealed cigar state and an unsealed cigar state, gradually increasing the suction flow rate from zero until the maximum suction flow rate setting value is reached, and obtaining pressure data of the first pressure sensor and pressure data of the second pressure sensor at different suction flow rates;

[0010] Substitute different suction flow rates, pressure data of the first pressure sensor and pressure data of the second pressure sensor into the control equation of the transient aerodynamic system of the cigar as boundary conditions, calculate the transient flow rate at the position of the second pressure sensor by the characteristic line method, and obtain the corresponding relationship between the transient pressure and transient flow rate of the second pressure sensor in the suction experiment;

[0011] The machine learning algorithm is used to learn the mapping relationship between the transient pressure of the cigar in the sealed state and the transient pressure of the cigar in the unsealed state under the same transient flow rate;

[0012] When the cigar is sealed, the measured cigar suction flow is used as the transient flow. Based on the corresponding relationship between transient pressure and transient flow, the transient measured pressure in the sealed state of the cigar is obtained. Based on the mapping relationship, the transient measured pressure in the unsealed state of the cigar is obtained. The transient measured pressure in the unsealed state of the cigar is the cigar suction resistance.

[0013] The continuity equation, momentum equation and energy equation are formula (1), formula (2) and formula (3) respectively.

[0014] (1),

[0015] (2),

[0016] (3),

[0017] Where A is the area of ​​the exhaust pipe, ρ is the gas density, t is the experimental time, Q is the exhaust flow rate, x is the distance of the measurement node along the pipeline axis, p is the pipeline pressure, π = pi, D is the pipeline diameter, f is the pipeline friction coefficient, R is the gas constant, γ is the specific heat ratio, T is the temperature, and q is the heat transfer volume heat flux.

[0018] Construct the control equation of the transient aerodynamic system of the cigar smoke and consider the adiabatic process of the ideal gas state equation:

[0019] (4),

[0020] Where p0 is the initial pressure of the pipeline, ρ0 is the initial density of the gas, and γ is the polytropic index of gas change.

[0021] Constructing the control equations of the transient aerodynamic system of cigar smoke, taking into account the heat transfer characteristics of the tube wall

[0022] (5),

[0023] Where k is the heat transfer coefficient, is the temperature difference between the inside and outside of the pipe wall.

[0024] The maximum suction flow rate setting value is 30%~40% of the standard suction flow rate.

[0025] The measured cigar smoke flow rate range is 5~20 ml / s.

[0026] The machine learning algorithm used is support vector machine.

[0027] The transient flow rate is obtained by the characteristic line method and the calculation results are obtained by Fortran programming.

[0028] In a second aspect, the present invention provides a system for measuring the draw resistance of cigar smoke, comprising:

[0029] A cigar transient aerodynamic system control equation construction module, which is used to construct the cigar transient aerodynamic system control equation based on the continuity equation, momentum equation and energy equation;

[0030] A module for acquiring data of different suction flow rates and pressures, for performing suction experiments in a sealed cigar state and an unsealed cigar state, gradually increasing the suction flow rate from zero until a maximum suction flow rate setting value is reached, and acquiring pressure data of the first pressure sensor and pressure data of the second pressure sensor under different suction flow rates;

[0031] The transient flow calculation and corresponding relationship establishment module is used to substitute different suction flow rates, pressure data of the first pressure sensor and pressure data of the second pressure sensor into the control equation of the transient aerodynamic system of the cigar as boundary conditions, obtain the transient flow rate at the position of the second pressure sensor by the characteristic line method, and obtain the corresponding relationship between the transient pressure and the transient flow rate of the second pressure sensor in the suction experiment;

[0032] A mapping relationship establishment module is used to use a machine learning algorithm to learn the mapping relationship between the transient pressure of the cigar in a sealed state and the transient pressure of the cigar in an unsealed state under the same transient flow rate;

[0033] The cigar smoke resistance calculation module uses the measured cigar smoke flow rate as the transient flow rate when the cigar is sealed. Based on the corresponding relationship between transient pressure and transient flow rate, the transient measured pressure under the cigar sealed state is obtained. Based on the mapping relationship, the transient measured pressure under the cigar unsealed state is obtained. The transient measured pressure under the cigar unsealed state is the cigar smoke resistance.

[0034] In a third aspect, the present invention provides a computer-readable storage medium having a computer program / instruction stored thereon, which, when executed by a processor, implements the steps of the method for measuring the draw resistance of cigar smoke.

[0035] Beneficial effects of the present invention: The present invention provides a method, system and storage medium for measuring the draw resistance of cigars, which simulates transient flow rates under two experimental conditions. The support vector machine is used to learn the mapping relationship under the two experimental conditions. The input parameter is the pressure data under different flow rates of the sealed cigar experiment, and the output parameter is the pressure data under different flow rates of the unsealed cigar experiment. The cigars can be non-destructively tested without damaging the cigar packaging and internal structure. At the same time, since it is a non-destructive test, the test samples can be expanded to improve the accuracy of the draw resistance results; in addition, only a small number of test learning samples are required, which greatly reduces the cost of cigar testing; the final measured value is the instantaneous draw resistance, which is consistent with the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a schematic flow chart of a method for measuring the draw resistance of cigar smoke according to the present invention;

[0037] Figure 2 The present invention is a structural diagram of a cigar smoke resistance measuring device of the present invention. DETAILED DESCRIPTION

[0038] The present invention will be further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present invention and are not intended to limit the protection scope of the present invention.

[0039] Example 1

[0040] The present invention discloses a method for measuring the draw resistance of cigar smoke, which uses a device for measuring the draw resistance of cigar smoke. The device structure is as follows: Figure 2 As shown, the cigar draw resistance measuring device includes an exhaust pipe, one end of the exhaust pipe is provided with a sealing portion, and the other end is connected to the exhaust port of the exhaust pump. The side of the exhaust pipe near the upper part of the sealing portion is connected to the ignition end of the cigar, and a second pressure sensor is installed on the side of the exhaust pipe at the ignition end position, and a first pressure sensor is installed on the side of the exhaust pipe away from the sealing portion. The two pressure sensors are used to measure the pressure change during the exhaust process.

[0041] like Figure 1As shown, the method for measuring the absorption resistance comprises the following steps:

[0042] Step 1: Construct the control equation of the cigar transient aerodynamic system based on the continuity equation, momentum equation and energy equation.

[0043] Step 2: Conduct suction experiments in the sealed state and the unsealed state of the cigar respectively. First, place the cigar at the sealed end of the experimental device system pipeline, then turn on the pressure sensor recording device, turn on the vacuum pump to conduct a suction experiment, and gradually increase the suction flow rate from zero until the maximum suction flow rate setting value is reached, and obtain the pressure data of the first pressure sensor and the pressure data of the second pressure sensor under different suction flow rates.

[0044] Step three, substitute different suction flow rates, pressure data of the first pressure sensor and pressure data of the second pressure sensor into the control equation of the transient aerodynamic system of the cigar as boundary conditions, obtain the transient flow rate at the position of the second pressure sensor by the characteristic line method, and obtain the corresponding relationship between the transient pressure and transient flow rate of the second pressure sensor in the suction experiment.

[0045] Step 4: Use a machine learning algorithm to learn the mapping relationship between the transient pressure of the cigar in a sealed state and the transient pressure of the cigar in an unsealed state under the same transient flow rate.

[0046] Step five, when the cigar is sealed, the measured cigar suction flow is used as the transient flow, and based on the corresponding relationship between transient pressure and transient flow, the transient measured pressure in the sealed state of the cigar is obtained, and then based on the mapping relationship, the transient measured pressure in the unsealed state of the cigar is obtained. The transient measured pressure in the unsealed state of the cigar is the cigar suction resistance.

[0047] Example 1

[0048] The present invention discloses a method for measuring the draw resistance of cigar smoke, which uses a device for measuring the draw resistance of cigar smoke. The device structure is as follows: Figure 2 As shown, the cigar draw resistance measuring device includes an exhaust pipe, one end of the exhaust pipe is provided with a sealing portion, and the other end is connected to the exhaust port of the exhaust pump. The side of the exhaust pipe near the upper part of the sealing portion is connected to the ignition end of the cigar, and a second pressure sensor is installed on the side of the exhaust pipe at the ignition end position, and a first pressure sensor and a flow meter are installed on the side of the exhaust pipe away from the sealing portion. The two pressure sensors are used to measure the pressure change during the exhaust process.

[0049] like Figure 1 As shown, the method for measuring the absorption resistance comprises the following steps:

[0050] Step 1: Construct the control equation of the cigar transient aerodynamic system based on the continuity equation, momentum equation and energy equation. The continuity equation, momentum equation and energy equation are formula (1), formula (2) and formula (3) respectively.

[0051] (1),

[0052] (2),

[0053] (3),

[0054] Where A is the area of ​​the exhaust pipe, ρ is the gas density, t is the experimental time, Q is the exhaust flow rate, x is the distance of the measurement node along the pipeline axis, p is the pipeline pressure, π = pi, D is the pipeline diameter, f is the pipeline friction coefficient, R is the gas constant, γ is the specific heat ratio, T is the temperature, and q is the heat transfer volume heat flux.

[0055] Construct the control equation of the transient aerodynamic system of the cigar smoke and consider the adiabatic process of the ideal gas state equation:

[0056] (4),

[0057] Where p0 is the initial pressure of the pipeline, ρ0 is the initial density of the gas, and γ is the polytropic index of gas change.

[0058] The control equations of the transient aerodynamic system of the cigar are constructed taking into account the heat transfer characteristics of the tube wall:

[0059] (5),

[0060] Where k is the heat transfer coefficient, is the temperature difference between the inside and outside of the pipe wall.

[0061] Step 2: Perform suction experiments in the sealed state and the unsealed state of the cigar respectively. First, put the cigar into the sealed end of the experimental device system pipeline, then turn on the pressure sensor recording device, turn on the vacuum pump to perform the suction experiment, and gradually increase the suction flow rate from zero until the maximum suction flow rate setting value is reached. The maximum suction flow rate setting value is 30%~40% of the standard suction flow rate (17.5 ml / s). Obtain the pressure data of the first pressure sensor and the second pressure sensor at different suction flow rates.

[0062] Step three, substitute different suction flow rates, pressure data of the first pressure sensor and pressure data of the second pressure sensor into the control equation of the transient aerodynamic system of the cigar as boundary conditions, obtain the transient flow rate at the position of the second pressure sensor by the characteristic line method, calculate the transient flow rate by Fortran programming, and obtain the corresponding relationship between the transient pressure and transient flow rate of the second pressure sensor in the suction experiment. At the beginning of the experiment, the suction pump is started, and the negative pressure wave propagates forward along the test pipeline. The two pressure sensors will successively experience a sudden reduction in pressure reduction accompanied by a short high-frequency oscillation, and then the pressure wave is transmitted to the cigar. The negative pressure wave will attenuate inside the cigarette and generate a negative pressure echo in the direction of the suction pump. Comparing the pressure curves of the negative pressure wave of the pressure sensor and the negative pressure echo can more accurately obtain the transient pressure of the cigar in the sealed state. Since the suction pump is continuously sucking, a large number of negative pressure waves and their echoes will be generated in the test tube. The higher the accuracy and acquisition frequency of the pressure sensor, the more accurate the final calculation result.

[0063] Step 4: Use a machine learning algorithm to learn the mapping relationship between the transient pressure of the cigar in a sealed state and the transient pressure of the cigar in an unsealed state under the same transient flow rate using a support vector machine.

[0064] Step 5: When the cigar is sealed, the measured cigar suction flow rate is used as the transient flow rate. The measured cigar suction flow rate ranges from 5 to 20 ml / s. Based on the corresponding relationship between transient pressure and transient flow rate, the transient measured pressure in the sealed state of the cigar is obtained. Based on the mapping relationship, the transient measured pressure in the unsealed state of the cigar is obtained. The transient measured pressure in the unsealed state of the cigar is the cigar suction resistance.

[0065] In order to verify and analyze the effect of the non-destructive measurement device and method of the cigar draw resistance of the present invention, the standard draw resistance test results of the cigar obtained by the present method are compared with the lossy draw resistance test results of the finished product cut open, and the results are shown in Table 1. The results show that the new device and method proposed in the present invention can accurately and non-destructively obtain the draw resistance of the sealed cigar, and the error with the actual draw resistance of the cigar (the lossy draw resistance test results of the finished product cut open) is less than 5%.

[0066] Table 1 Comparison of non-destructive testing of cigar smoke and destructive testing of finished product

[0067]

[0068] Example 3

[0069] This embodiment discloses a system for measuring the draw resistance of cigar smoke, comprising:

[0070] A cigar transient aerodynamic system control equation construction module, which is used to construct the cigar transient aerodynamic system control equation based on the continuity equation, momentum equation and energy equation;

[0071] A module for acquiring data of different suction flow rates and pressures, for performing suction experiments in a sealed cigar state and an unsealed cigar state, gradually increasing the suction flow rate from zero until a maximum suction flow rate setting value is reached, and acquiring pressure data of the first pressure sensor and pressure data of the second pressure sensor under different suction flow rates;

[0072] The transient flow calculation and corresponding relationship establishment module is used to substitute different suction flow rates, pressure data of the first pressure sensor and pressure data of the second pressure sensor into the control equation of the transient aerodynamic system of the cigar as boundary conditions, obtain the transient flow rate at the position of the second pressure sensor by the characteristic line method, and obtain the corresponding relationship between the transient pressure and the transient flow rate of the second pressure sensor in the suction experiment;

[0073] A mapping relationship establishment module is used to use a machine learning algorithm to learn the mapping relationship between the transient pressure of the cigar in a sealed state and the transient pressure of the cigar in an unsealed state under the same transient flow rate;

[0074] The cigar smoke resistance calculation module uses the measured cigar smoke flow rate as the transient flow rate when the cigar is sealed. Based on the corresponding relationship between transient pressure and transient flow rate, the transient measured pressure under the cigar sealed state is obtained. Based on the mapping relationship, the transient measured pressure under the cigar unsealed state is obtained. The transient measured pressure under the cigar unsealed state is the cigar smoke resistance.

[0075] Example 4

[0076] This embodiment introduces a computer-readable storage medium on which a computer program is stored. When the program is executed by a processor, the steps of the method described in Embodiment 1 or 2 are executed.

[0077] It will be appreciated by those skilled in the art that embodiments of the present invention may be provided as methods, systems, or computer program products. Therefore, the present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Furthermore, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0078] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A system that specifies the functions of a box or multiple boxes.

[0079] These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer-readable memory produce a product including an instruction system, which is implemented in the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0080] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0081] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A method for measuring the draw resistance of cigar smoke, characterized in that: A cigar smoke draw resistance measuring device is used, the cigar smoke draw resistance measuring device comprises an exhaust pipe, one end of the exhaust pipe is provided with a sealing portion, the other end is connected to the exhaust port of the exhaust pump, the side of the exhaust pipe near the sealing portion is connected to the ignition end of the cigar, a second pressure sensor is installed on the side of the exhaust pipe at the ignition end, and a first pressure sensor and a flow meter are installed on the side of the exhaust pipe away from the sealing portion; The absorption resistance determination method comprises the following steps: Obtaining a control equation of a cigar transient aerodynamic system, wherein the control equation of the cigar transient aerodynamic system is constructed based on a continuity equation, a momentum equation, and an energy equation; In the sealed state and the unsealed state of the cigar, the suction flow rate is controlled to gradually increase from zero until the maximum suction flow rate setting value is reached, and the pressure data of the first pressure sensor and the second pressure sensor under different suction flow rates are obtained; Substitute different suction flow rates, pressure data of the first pressure sensor and pressure data of the second pressure sensor into the control equation of the transient aerodynamic system of the cigar as boundary conditions, calculate the transient flow rate at the position of the second pressure sensor by the characteristic line method, and obtain the corresponding relationship between the transient pressure and transient flow rate of the second pressure sensor in the suction experiment; The machine learning algorithm is used to learn the mapping relationship between the transient pressure of the cigar in the sealed state and the transient pressure of the cigar in the unsealed state under the same transient flow rate; When the cigar is sealed, the measured cigar suction flow is used as the transient flow. Based on the corresponding relationship between transient pressure and transient flow, the transient measured pressure in the sealed state of the cigar is obtained. Based on the mapping relationship, the transient measured pressure in the unsealed state of the cigar is obtained. The transient measured pressure in the unsealed state of the cigar is the cigar suction resistance.

2. The method for measuring the draw resistance of cigar according to claim 1, characterized in that: The continuity equation, momentum equation and energy equation are formula (1), formula (2) and formula (3) respectively. （1）， （2）， （3）， Where A is the area of ​​the exhaust pipe, ρ is the gas density, t is the experimental time, Q is the exhaust flow rate, x is the distance of the measurement node along the pipeline axis, p is the pipeline pressure, π = pi, D is the pipeline diameter, f is the pipeline friction coefficient, R is the gas constant, γ is the specific heat ratio, T is the temperature, and q is the heat transfer volume heat flux.

3. The method for measuring the draw resistance of cigar according to claim 2, characterized in that: Construct the control equation of the transient aerodynamic system of the cigar smoke and consider the adiabatic process of the ideal gas state equation: （4）， Where p0 is the initial pressure of the pipeline, ρ0 is the initial density of the gas, and γ is the polytropic index of gas change.

4. The method for measuring the draw resistance of cigar according to claim 2, characterized in that: The control equations of the transient aerodynamic system of the cigar are constructed taking into account the heat transfer characteristics of the tube wall: （5）， Where k is the heat transfer coefficient, is the temperature difference between the inside and outside of the pipe wall.

5. The method for measuring the draw resistance of cigar according to claim 1, characterized in that: The maximum suction flow rate setting value is 30%~40% of the standard suction flow rate.

6. The method for measuring the draw resistance of cigar according to claim 1, characterized in that: The measured cigar smoke flow rate range is 5~20 ml / s.

7. The method for measuring the draw resistance of cigar according to claim 1, characterized in that: The machine learning algorithm used is support vector machine.

8. The method for measuring the draw resistance of cigar according to claim 1, characterized in that: The transient flow rate is obtained by the characteristic line method and the calculation results are obtained by Fortran programming.

9. A cigar smoke draw resistance measurement system, characterized in that: include; A cigar transient aerodynamic system control equation construction module, which is used to construct the cigar transient aerodynamic system control equation based on the continuity equation, momentum equation and energy equation; A module for acquiring data of different suction flow rates and pressures, for performing suction experiments in a sealed cigar state and an unsealed cigar state, gradually increasing the suction flow rate from zero until a maximum suction flow rate setting value is reached, and acquiring pressure data of the first pressure sensor and pressure data of the second pressure sensor under different suction flow rates; The transient flow calculation and corresponding relationship establishment module is used to substitute different suction flow rates, pressure data of the first pressure sensor and pressure data of the second pressure sensor into the control equation of the transient aerodynamic system of the cigar as boundary conditions, obtain the transient flow rate at the position of the second pressure sensor by the characteristic line method, and obtain the corresponding relationship between the transient pressure and the transient flow rate of the second pressure sensor in the suction experiment; A mapping relationship establishment module is used to use a machine learning algorithm to learn the mapping relationship between the transient pressure of the cigar in a sealed state and the transient pressure of the cigar in an unsealed state under the same transient flow rate; The cigar smoke resistance calculation module uses the measured cigar smoke flow rate as the transient flow rate when the cigar is sealed. Based on the corresponding relationship between transient pressure and transient flow rate, the transient measured pressure under the cigar sealed state is obtained. Based on the mapping relationship, the transient measured pressure under the cigar unsealed state is obtained. The transient measured pressure under the cigar unsealed state is the cigar smoke resistance.

10. A computer-readable storage medium having a computer program / instruction stored thereon, characterized in that: When the computer program / instruction is executed by a processor, the steps of the method for measuring the draw resistance of cigar smoke according to any one of claims 1 to 8 are implemented.

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