CN111595480A - Device and method for detecting temperature field of filter tip in cigarette smoking process - Google Patents
Device and method for detecting temperature field of filter tip in cigarette smoking process Download PDFInfo
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- CN111595480A CN111595480A CN202010560534.5A CN202010560534A CN111595480A CN 111595480 A CN111595480 A CN 111595480A CN 202010560534 A CN202010560534 A CN 202010560534A CN 111595480 A CN111595480 A CN 111595480A
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- temperature
- cigarette
- filter tip
- sensor
- microcontroller
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/02—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using thermoelectric elements, e.g. thermocouples
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/14—Supports; Fastening devices; Arrangements for mounting thermometers in particular locations
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/14—Supports; Fastening devices; Arrangements for mounting thermometers in particular locations
- G01K1/143—Supports; Fastening devices; Arrangements for mounting thermometers in particular locations for measuring surface temperatures
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/16—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements
- G01K7/22—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements the element being a non-linear resistance, e.g. thermistor
Abstract
The invention discloses a device and a method for detecting a temperature field of a filter tip in a cigarette smoking process. The method comprises the following steps: loading cigarettes into a cigarette holder; starting the upper computer and the microcontroller, and starting the speed-adjustable vacuum pump immediately; igniting the cigarette, and starting to collect and display real-time temperature and flow data; sending an instruction by an upper computer to enable a microcontroller to control a speed-adjustable vacuum pump to simulate standard suction; the upper computer determines the actual flow curve of the suction and the three-dimensional unsteady temperature field of the filter tip through the data uploaded by the microcontroller. The invention can detect the temperature change of the filter tip in real time on the premise of accurately simulating standard suction, thereby reflecting the three-dimensional unsteady temperature field of the filter tip.
Description
Technical Field
The invention relates to the technical field of tobacco temperature measurement, in particular to a detection device for a filter tip temperature field in a cigarette smoking process, and also relates to a detection method for the detection device for the filter tip temperature field in the cigarette smoking process.
Background
The detection of the cigarette temperature field is one of the key points of the tobacco scientific research, because the cigarette temperature field is closely related to the density, the suction resistance, the filtering material and the like of the tobacco, and the research on the cigarette temperature field can provide scientific basis for the internal structural design of the cigarette and the selection of auxiliary materials thereof.
In the current related experimental research, the cigarette temperature detection mainly focuses on the combustion temperature of the cigarette and the like. For the measurement of the temperature of the cigarette filter stick, the combination of a quartz capillary tube and a platinum-rhodium alloy wire is usually adopted to detect the smoking temperature of the cigarette or a micro thermocouple is used to detect the bulk temperature of the cigarette during the burning, for example, patent cn201610094163.x and CN201610094827.2 disclose a temperature detection device capable of measuring the axial and radial temperature fields of the cigarette filter stick, the three-dimensional unsteady temperature field of the cigarette filter tip cannot be measured simultaneously, a detection method and a device specially aiming at the cigarette butt temperature distribution field do not exist, and the clamping and sealing are considered for the temperature detection of the cigarette butt part, so the prior art cannot be extended.
Meanwhile, the existing smoking simulation device is large in size and inconvenient to carry; secondly, the simulation effect is not ideal because the simulation effect is greatly different from the actual smoking state of the human body. For example, patent CN201710705235.4 discloses a method for simulating standard suction of a smoking machine by using a stepping motor, but because the suction capacity of a suction device is limited, frequent air exhaust is required to ensure repeated suction, continuous suction cannot be simulated, and a corresponding suction structure needs to be designed to be matched with a sliding table module for use, which is not beneficial to device miniaturization.
Disclosure of Invention
Based on the defects of the prior art, the invention aims to provide the detection device for the temperature field of the filter tip in the cigarette smoking process, which has good simulated smoking effect and small occupied volume.
Correspondingly, the invention also provides a detection method of the temperature field of the filter tip in the cigarette smoking process, which can accurately measure the temperature field of the filter tip in the cigarette smoking process.
In order to achieve the purpose, the invention adopts the following technical measures:
a device for detecting the temperature field of a filter tip during smoking of a cigarette, comprising: the cigarette holder is used for holding and sealing a cigarette filter tip, and a temperature probe, a side temperature sensor and an end surface temperature sensor which are used for detecting the temperature of different parts of the cigarette filter tip are arranged in the cigarette holder; the air flow sensor is connected with the cigarette holder and used for detecting the smoking flow of the cigarette filter tip and simulating the calibration process before smoking and the measurement of the actual smoking flow curve; the speed-adjustable vacuum pump is connected with the airflow sensor and is used for realizing the smoking process of the cigarette filter tip, and the smoking flow is determined by the frequency of the input square wave signal; the microcontroller is connected with the temperature sensor, the airflow sensor and the speed-adjustable vacuum pump, and is used for acquiring temperature data and flow data and sending square wave signals to control the speed-adjustable vacuum pump; and the upper computer is connected with the microcontroller and is used for receiving the temperature data and the flow data collected by the microcontroller and determining a three-dimensional unsteady temperature field and an actual suction flow curve of the cigarette filter tip.
Preferably, the microcontroller is composed of an STM32F407 chip and a multi-path temperature acquisition circuit, has an analog-to-digital conversion function and is used for acquiring temperature data of a temperature sensor in the cigarette holder, a group of data is acquired every 10ms, and the group of data can contain 24 temperature data; the device has a communication function to acquire flow data of the airflow sensor; the speed-adjustable vacuum pump has the function of generating square waves with different frequencies to control the speed-adjustable vacuum pump.
Further, punching is carried out at the front end of the cigarette holder according to the temperature measuring part, a temperature measuring probe is inserted into the punched hole, and the front end of the temperature measuring probe is positioned at the center of the cigarette holder; and sealing the gap between the temperature probe and the punched hole by using sealant so as to detect the temperature of the center inside the front end of the cigarette filter tip.
Further, punching holes at the outlet of the lead of the side temperature measuring sensor on the cigarette holder, and uniformly attaching the side temperature measuring sensor to the circumferential inner wall of the cigarette holder; and leading out the lead of the side temperature sensor from the punched hole, and sealing the gap between the lead of the side temperature sensor and the punched hole by using sealant.
Further, punching holes at the outlet of the lead of the end face temperature sensor on the cigarette holder, and fixing the end face temperature sensor in the end face notch of the cigarette holder; and leading out a lead of the end face temperature measuring sensor from the punched hole, and sealing a gap between the lead of the end face temperature measuring sensor and the punched hole by using sealant.
Optionally, the cigarette holder is composed of an upper holding sheet and a lower holding sheet.
Optionally, the side temperature measuring sensor includes a plurality of temperature measuring sensors arranged in a straight line at equal intervals. The end face temperature measuring sensor comprises a plurality of temperature measuring sensors which are uniformly distributed in the cross section circle of the filter tip.
Further, the response time of the airflow sensor is 10 ms.
The cigarette holder is characterized in that firstly, the cigarette holder with the contact type temperature sensors arranged on the inner wall and the tail end surface and the vertical penetration type temperature probe is adopted, so that the cigarette holder can ensure that the temperature is measured while the cigarette is clamped and sealed compared with the existing common cigarette holder, and the surface and inner multipoint temperature measurement is realized compared with the common cigarette temperature measurement method such as thermocouple temperature measurement and the like, so that the temperature field change is obtained through a large amount of data calculation; and secondly, the suction flow can be closer to a standard flow curve or an actual suction condition through the adjustable vacuum pump and the high-response airflow sensor.
The invention discloses a method for detecting a temperature field of a filter tip in a cigarette smoking process, which comprises the following steps:
s1, selecting a cigarette sample to be detected which meets the conditions;
s2, placing the selected cigarette sample in a cigarette holder, wherein a side temperature measurement sensor and an end surface temperature measurement sensor in the cigarette holder are respectively contacted with the outer edge and the end surface of the filter tip, and a temperature measurement probe is penetrated into the filter tip;
s3, starting the upper computer and the microcontroller, and starting the speed-adjustable vacuum pump immediately;
s4, igniting the cigarettes, and acquiring and uploading real-time temperature and flow data of the cigarette filter tip to an upper computer by the microcontroller;
s5, sending an instruction to the microcontroller through the upper computer, and enabling the microcontroller to send square wave signals with different frequencies to the speed-adjustable vacuum pump so as to simulate standard suction;
and S6, the upper computer determines the actual flow curve of the suction and the three-dimensional unsteady temperature field of the cigarette filter according to the data uploaded by the microcontroller.
The speed-adjustable vacuum pump simulates standard pumping, namely, firstly, a mapping relation between the frequency of an input square wave signal and the actual pumped flow is established, and then, square wave signals with different frequencies are respectively input to the speed-adjustable vacuum pump at certain time intervals according to the mapping relation and a standard flow curve graph.
The invention can detect the temperature change of the filter tip in real time on the premise of accurately simulating standard suction, thereby reflecting the three-dimensional unsteady temperature field of the filter tip. Compared with the prior art, the device and the method for detecting the temperature field of the filter tip in the cigarette smoking process have the following beneficial effects:
1. not only can the standard suction process be accurately simulated, but also other suction flow curves can be simulated by modifying the program.
2. The acquisition time of a group of synchronous temperature data and flow data can reach 10ms of quick response.
3. A three-dimensional unsteady temperature field at the time of simulated pumping can be reflected.
4. The principle is simple, and the integration is convenient.
Drawings
FIG. 1 is a schematic structural diagram of a device for detecting the temperature field of a filter tip during smoking of cigarettes according to a preferred embodiment of the present invention.
FIG. 2 is a schematic view of the interior of a cigarette holder of the device for detecting the temperature field of a filter tip during smoking of cigarettes according to the present invention;
FIG. 3 is a schematic view of a side temperature measuring sensor in the cigarette butt temperature field distribution measuring device according to the present invention;
FIG. 4 is a schematic view of an end face temperature measurement sensor in the cigarette end temperature field distribution device of the present invention.
Figure 5 is a graph of a standard curve of a simulated standard pumping of the present invention versus a theoretical pumping of a variable vacuum pump.
Wherein: 1-cigarette holder; 2-an airflow sensor; 3-speed adjustable vacuum pump; 4-a microcontroller; 5-an upper computer; 1.1-temperature probe; 1.2-side temperature sensor; 1.3-end face temperature measuring sensor; 1.4-cigarette holder case.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in figure 1, the detection device for the temperature field of the filter tip in the cigarette smoking process provided by the embodiment of the invention comprises a cigarette holder 1, an airflow sensor 2, a speed-adjustable vacuum pump 3, a microcontroller 4 and an upper computer 5.
As shown in fig. 2, the cigarette holder 1 is divided into an upper holding piece and a lower holding piece, and can hold and seal a cigarette filter tip when the upper and lower holding pieces are tightly attached by applying an external force, the inner wall and the tail end of the cigarette holder 1 are provided with contact temperature sensors (a side temperature sensor 1.2 and an end surface temperature sensor 1.3) and a piercing temperature probe 1.1 so as to detect the internal temperature of the cigarette filter tip. The diameter of the temperature probe 1.1 can be less than 2mm, and can be made of a thermal resistor or a thermocouple wire and the like; the side temperature measuring sensor 1.2 is made by 5 thermistors which are attached on a printed circuit board at equal intervals within the length range of a filter tip (cigarette butt); the end face temperature measuring sensor 1.3 is made by uniformly attaching 5 thermistors on a printed circuit board within the cross section range of the cigarette butt, and the part without wires is hollowed out.
Wherein, the step that temperature probe 1.1 is fixed in on a cigarette holder includes: punching holes at the front end of the cigarette holder according to the temperature measuring part; inserting the temperature probe 1.1 into the punched hole and enabling the front end of the temperature probe to be positioned at the center of the cigarette holder, namely the center of the cigarette butt of the cigarette after the cigarette is loaded; and sealing the gap between the temperature probe and the punched hole by using sealant so as to detect the temperature of the center inside the front end of the cigarette filter tip.
The step of fixing the side temperature sensor 1.2 on the cigarette holder comprises: punching holes at the outlet of the side temperature sensor lead on the cigarette holder; uniformly attaching the side temperature measuring sensors 1.2 to the circumferential inner wall of the cigarette holder; leading out a lead of the side temperature measuring sensor from the punched hole; and sealing the gap between the lead of the side temperature measuring sensor and the punched hole by using sealant.
The step of fixing the end face temperature measuring sensor 1.3 on the cigarette holder comprises: punching holes at the outlet of the end face temperature sensor lead on the cigarette holder; fixing an end face temperature measuring sensor 1.3 in a notch of the end face of the cigarette holder; leading out a lead of the end surface temperature measuring sensor from the punched hole; and sealing the gap between the lead of the end face temperature measurement sensor and the punched hole by using sealant.
The clamping and sealing of the cigarette, the penetration of the temperature measuring probe and the contact of the side temperature measuring sensor and the outer edge of the cigarette butt are realized in the process that the two clamping sheets are clamped up and down.
The cigarette is completely arranged in the cigarette holder, so that the temperature probe can penetrate into the center of the cigarette, the side temperature sensor is contacted with the outer edge of the cigarette end of the cigarette, and the end temperature sensor is contacted with the tail end of the cigarette end.
The air flow sensor 2 adopts a silicon-flying FS4003 series gas mass flow sensor, is connected with a cigarette holder 1 through a quick-insertion air pipe connector and an air pipe, is used for detecting the suction flow of a cigarette filter tip and simulating the calibration process before suction and the measurement of an actual suction flow curve, and the response time of the air flow sensor 2 is 10ms at most. The speed-adjustable vacuum pump 3 is a three-cavity vacuum diaphragm pump, is connected with the airflow sensor 2 through a quick-insertion air pipe joint and an air pipe, and is used for realizing the suction process of the cigarette filter tip, the suction flow is determined by the frequency of an input square wave signal, and the suction flow can be rapidly changed when the frequency of the input square wave signal is changed by the speed-adjustable vacuum pump 3.
The microcontroller 4 is connected with a temperature sensor, an airflow sensor 2 and an adjustable speed vacuum pump 3 and is used for acquiring temperature data and flow data of a cigarette filter tip and sending a square wave signal to control the adjustable speed vacuum pump 3, the microcontroller 4 consists of an STM32F407 chip and a multi-path temperature acquisition circuit, has an analog-to-digital conversion function and acquires the temperature data of the temperature sensor in the cigarette holder, acquires a group of data every 10ms, and the group of data can contain 24 pieces of temperature data; the air flow sensor 2 has a communication function to acquire flow data; having the function of generating square waves of different frequencies to control the adjustable speed vacuum pump 3.
An upper computer 5 (the upper computer is an executable program/software at a PC end, is connected with a microcontroller by a data line and receives data, calculates a three-dimensional unsteady temperature field by receiving 24 temperature data at different moments and the arrangement positions of all temperature sensors in a holder and draws a suction flow curve by receiving instantaneous flow data at different moments) is connected with the microcontroller 4 and is used for receiving the temperature data and the flow data collected by the microcontroller 4 and determining the three-dimensional unsteady temperature field and the actual suction flow curve of the cigarette filter.
Correspondingly, the detection method of the detection device for the filter tip temperature field in the cigarette smoking process of the embodiment comprises the following steps:
preferably, the time for converting Q ═ g (t) to Q' ═ h (t) is 10 ms.
And 3, obtaining a function v (f (Q ')) f (h (t)) Q (t) of the frequency v and the time t of the square wave by using the flow simulation curve Q' ═ h (t) and the calibration result v ═ f (Q).
And 4, sending a square wave signal to the speed-adjustable vacuum pump 3 by using the microcontroller 4 according to v ═ Q (t), acquiring and uploading flow data by using the airflow sensor 2 and the microcontroller 4, determining an actual pumping flow curve by using the upper computer 5, and comparing the actual pumping flow curve with Q ═ g (t).
Preferably, if the actual suction flow rate curve differs too much from Q ═ g (t), Q' ═ h (t) is corrected, and step 4 is repeated until the requirement is met.
And 5, placing the detection device of the filter tip temperature field in the cigarette smoking process in a specified test atmospheric environment, placing the cigarette sample to be detected in the test atmospheric environment for balancing for 48 hours, and selecting according to specified selection conditions.
And 6, placing the selected cigarette sample in the cigarette holder 1, wherein a side temperature sensor and an end temperature sensor in the cigarette holder 1 are respectively contacted with the outer edge and the end surface of the cigarette end, and a temperature probe penetrates into the filter tip.
And 7, igniting the cigarettes, and continuously acquiring and uploading real-time temperature and flow data to the upper computer 5 by the microcontroller 4.
Wherein, a set of temperature data and flow data of a plurality of temperature sensors in cigarette holder 1 of synchronous collection, its collection with upload cycle once for 10 ms.
And 8, sending an instruction to the microcontroller 4 through the upper computer 5, so that the microcontroller 4 sends a square wave signal to the speed-adjustable vacuum pump 3 according to v ═ q (t) to simulate standard suction.
And 9, determining an actual sucked flow curve and a three-dimensional unsteady temperature field of the filter tip by the upper computer 5 through data uploaded by the microcontroller 4.
The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can understand that the modifications or substitutions within the technical scope of the present invention should be included in the scope of the present invention.
Claims (10)
1. A detection device for a temperature field of a filter tip in a cigarette smoking process is characterized by comprising:
the cigarette holder is used for holding and sealing a cigarette filter tip, and a temperature probe, a side temperature sensor and an end surface temperature sensor which are used for detecting the temperature of different parts of the cigarette filter tip are arranged in the cigarette holder;
the air flow sensor is connected with the cigarette holder and used for detecting the smoking flow of the cigarette filter tip and simulating the calibration process before smoking and the measurement of the actual smoking flow curve;
the speed-adjustable vacuum pump is connected with the airflow sensor and is used for realizing the smoking process of the cigarette filter tip, and the smoking flow is determined by the frequency of the input square wave signal;
the microcontroller is connected with the temperature sensor, the airflow sensor and the speed-adjustable vacuum pump, and is used for acquiring temperature data and flow data and sending square wave signals to control the speed-adjustable vacuum pump;
and the upper computer is connected with the microcontroller and is used for receiving the temperature data and the flow data collected by the microcontroller and determining a three-dimensional unsteady temperature field and an actual suction flow curve of the cigarette filter tip.
2. The device for detecting the temperature field of the filter tip in the cigarette smoking process according to the claim 1, wherein the microcontroller is composed of an STM32F407 chip and a multi-path temperature acquisition circuit, has an analog-to-digital conversion function to acquire the temperature data of the temperature sensor inside the cigarette holder, and acquires a group of data every 10ms, wherein the group of data can contain 24 temperature data;
the device has a communication function to acquire flow data of the airflow sensor;
the speed-adjustable vacuum pump has the function of generating square waves with different frequencies to control the speed-adjustable vacuum pump.
3. The device for detecting the temperature field of the filter tip in the cigarette smoking process according to the claim 1, wherein the front end of the cigarette holder is perforated according to the temperature measuring part, the temperature measuring probe is inserted into the perforation, and the front end of the temperature measuring probe is positioned at the center of the cigarette holder; and sealing the gap between the temperature probe and the punched hole by using sealant so as to detect the temperature of the center inside the front end of the cigarette filter tip.
4. The device for detecting the temperature field of the filter tip in the cigarette smoking process according to the claim 1, characterized in that the outlet of the lead of the side temperature sensor on the cigarette holder is perforated, and the side temperature sensor is uniformly attached to the inner circumferential wall of the cigarette holder; and leading out the lead of the side temperature sensor from the punched hole, and sealing the gap between the lead of the side temperature sensor and the punched hole by using sealant.
5. The device for detecting the temperature field of the filter tip in the smoking process of the cigarette according to claim 1, wherein the outlet of the lead of the end face temperature sensor on the cigarette holder is perforated, and the end face temperature sensor is fixed in the end face notch of the cigarette holder; and leading out a lead of the end face temperature measuring sensor from the punched hole, and sealing a gap between the lead of the end face temperature measuring sensor and the punched hole by using sealant.
6. The apparatus for detecting the temperature field of the filter tip during smoking of cigarette according to claim 1, wherein the cigarette holder is composed of an upper holding sheet and a lower holding sheet.
7. The device for detecting the temperature field of the filter tip during the smoking of the cigarette as claimed in claim 1, wherein the side temperature measuring sensor comprises a plurality of temperature measuring sensors which are arranged in a straight line at equal intervals.
8. The device for detecting the temperature field of the filter tip during the smoking of the cigarette as claimed in claim 1, wherein the end face temperature measuring sensor comprises a plurality of temperature measuring sensors uniformly arranged in a cross-sectional circle of the filter tip.
9. A device for detecting the temperature field of filter tips during smoking of tobacco rods according to claim 1, wherein the response time of the air flow sensor is 10 ms.
10. A method for detecting a device for detecting the temperature field of a filter tip during smoking of a cigarette according to any one of claims 1 to 9, comprising the steps of:
s1, selecting a cigarette sample to be detected which meets the conditions;
s2, placing the selected cigarette sample in a cigarette holder, wherein a side temperature measurement sensor and an end surface temperature measurement sensor in the cigarette holder are respectively contacted with the outer edge and the end surface of the filter tip, and a temperature measurement probe is penetrated into the filter tip;
s3, starting the upper computer and the microcontroller, and starting the speed-adjustable vacuum pump immediately;
s4, igniting the cigarettes, and acquiring and uploading real-time temperature and flow data of the cigarette filter tip to an upper computer by the microcontroller;
s5, sending an instruction to the microcontroller through the upper computer, and enabling the microcontroller to send square wave signals with different frequencies to the speed-adjustable vacuum pump so as to simulate standard suction;
and S6, the upper computer determines the actual flow curve of the suction and the three-dimensional unsteady temperature field of the cigarette filter according to the data uploaded by the microcontroller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010560534.5A CN111595480A (en) | 2020-06-18 | 2020-06-18 | Device and method for detecting temperature field of filter tip in cigarette smoking process |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010560534.5A CN111595480A (en) | 2020-06-18 | 2020-06-18 | Device and method for detecting temperature field of filter tip in cigarette smoking process |
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| CN111595480A true CN111595480A (en) | 2020-08-28 |
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| CN202010560534.5A Pending CN111595480A (en) | 2020-06-18 | 2020-06-18 | Device and method for detecting temperature field of filter tip in cigarette smoking process |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112858087A (en) * | 2021-04-06 | 2021-05-28 | 中国烟草总公司郑州烟草研究院 | Device for obtaining stable volume flow, device for measuring smoke resistance standard component for cigarette and device for measuring ventilation rate standard component for cigarette |
-
2020
- 2020-06-18 CN CN202010560534.5A patent/CN111595480A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112858087A (en) * | 2021-04-06 | 2021-05-28 | 中国烟草总公司郑州烟草研究院 | Device for obtaining stable volume flow, device for measuring smoke resistance standard component for cigarette and device for measuring ventilation rate standard component for cigarette |
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