Device and method for measuring gas phase temperature of a cigarette combustion cone

Abstract

The invention discloses a device and a method for measuring the gas phase temperature of a cigarette combustion cone, which belong to the technical field of cigarette tests. The device is provided with a synchronous triggering device and a data acquisition card; a suction signal indication output end of a smoking machine is connected with an input end of the synchronous triggering device, and an output end of the synchronous triggering device is connected with a computer control system through an RS232 interface; and an output end of a thermocouple temperature measuring system provided with agroup of thermocouples is connected with an input end of the data acquisition card, and an output end of the data acquisition card is connected with the computer control system through a USB interface. The method for measuring the gas phase temperature of the cigarette combustion cone realizes automatical acquisition in synchronization with suction and realizes that software starts to acquire temperature data automatically at the same time of lighting the cigarette. Data of each independent experiment are ensured to be aligned on a time axis, and an automatic stop function of setting the acquisition time is realized. The instrumental automatic level is improved.

Description

technical field [0001] The invention belongs to the technical field of cigarette testing, in particular to a device for measuring the gas phase temperature of a cigarette burning cone and a method for measuring the gas phase temperature of a cigarette burning cone. Background technique [0002] In the prior art, during the combustion process of cigarettes, a combustion cone is formed, and the temperature of the combustion cone and the distribution of the temperature field are one of the important parameters affecting the quality of cigarettes and the reduction of tar and harm. In order to realize the monitoring of the temperature field distribution of the cigarette burning process, a smoking machine is generally used to simulate the smoking process, and at the same time, a cigarette burning cone temperature measuring instrument is used to measure the temperature information of the cigarette during the burning process. The temperature of the cigarette burning cone includes so...

AI Technical Summary

Problems solved by technology

The thermocouple used in the measurement system currently used for the measurement of the gas phase temperature field of the cigarette combustion cone has poor durability and short life

[0006] (2) Thermocouple bracket: In the prior art, the position and depth of the thermocouple inserted into the cigarette cannot be adjusted or conveniently adjusted; the thermocouple fixing procedure is cumbersome, inflexible, inconvenient to operate, and the experiment takes a long time; the thermocouple bracket is too close to the cigarette

The current measurement system used for measuring the gas phase temperature field of the cigarette combustion cone has problems with the fixing device: the position and depth of the thermocouple inserted into the cigarette cannot be adjusted or cannot be adjusted conveniently; the thermocouple fixing procedure is cumbersome, inflexible, and difficult to operate Convenient, time-consuming experiment; thermocouple holder is too close to the cigarette

[0008] (3) Data acquisition hardware: poor stability, easy to crash; fewer channels; the industrial data recorder used in the prior art has low precision and low acquisition rate; it is impossible to identify and track the smoking action of the smoking machine

However, the existing data acquisition hardware of the system does not meet the above requirements very well.

[0010] (4) Computer control system and software part: the software of the prior art possesses basic functions, but the degree of automation is relatively poor

If the automation degree of the smoking machine is not high, that is, when the ignition and the automatic suction command need to be completed manually, the software of the system must be required to have the function of automatically starting the collection, otherwise one experiment operator cannot complete the operation at the beginning of the experiment

[0013] (2) Does not have automatic stop function

Without this function, after the equipment collects for a certain period of time, the data collection software cannot automatically stop collecting data, and the experiment operator must complete it manually, which increases the operation steps and workload

[0014] (3) Does not have the function of automatically processing data

In the prior art, in order to finally obtain the distribution information of the temperature field of cigarettes at different times, the original data must be manually selected, analyzed, counted, calculated, drawn, and then calculated, which is a very time-consuming task

Such a system with a low level of automation is inefficient due to the heavy workload of subsequent data processing

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