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Odor detection system based on carrier gas sample introduction

A technology of odor detection and gas detection, which is applied to the structural details of gas analyzers, measuring devices, and analysis of gas mixtures, etc., and can solve problems such as large state dependence, complex operation, emotion, physical health, gender, age, etc. , to achieve the effect of improving gas path stability, optimizing sensor array, and improving detection stability

Inactive Publication Date: 2019-03-01
ZHEJIANG GONGSHANG UNIVERSITY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the above three types of detection techniques all have certain disadvantages: (1) The sensory evaluation method requires a lot of time and money to train the sensory personnel, and the sensory evaluation results are highly dependent on the state of the evaluation personnel, such as their emotions, physical Health, gender, age, etc. all have a clear impact on the results
(2) Methods such as gas chromatography and mass spectrometry cannot be directly associated with odor, and many key components that affect odor are not within the detection range of gas chromatography and mass spectrometry; in addition, the detection time of gas chromatography and mass spectrometry is long, and the operation is complicated. Dedicated Experimental Operators
(3) Most of the odor detection systems at the present stage use the suction detection method, and the detection stability and discrimination ability are not very ideal

Method used

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  • Odor detection system based on carrier gas sample introduction
  • Odor detection system based on carrier gas sample introduction
  • Odor detection system based on carrier gas sample introduction

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Experimental program
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Effect test

Embodiment 1

[0037] Such as figure 1 As shown, the odor detection system of the present invention includes a carrier gas source 1, a gas pipeline 2, a pressure stabilizing valve A 3, a pressure gauge 4, a stabilizing flow valve 5, a flow meter 6, a pipeline filter 7, and a detection gas inlet Sample injector 8, gas filter chamber 9, gas filter column array 10, constant temperature chamber 11, gas detection chamber 12, sensor array 13, detection signal collector 14, computer control software 15, pressure regulator valve B 16 and exhaust gas outlet 17.

[0038] Carrying gas source 1, steady pressure valve A 3, pressure gauge 4, steady flow valve 5, flow meter 6, pipeline filter 7, detection gas sampling syringe 8, gas filter chamber 9, gas filter column array 10, constant temperature The chamber 11 , the gas detection chamber 12 , the pressure stabilizing valve B 16 and the exhaust gas outlet 17 are connected through the gas pipeline 2 .

[0039] The gas filter column array 10 is located in...

Embodiment 2

[0045] Select the yellow rice wine sold in the market, Yueyahu brand, Pagoda brand, Guyue Longshan brand and Kuaiji brand to be a total of five brands as detection samples, respectively adopt the odor detection system of pumping and sampling in the prior art and the present invention. Smell detection system for detection.

[0046] figure 2 It is the detection result of the odor detection system in the prior art. It can be seen from the figure that the sample areas of Chenghuang brand rice wine and Yueyahu brand rice wine overlap, and the sample areas of Ta brand and Guyue Longshan brand rice wine exist. Overlap; the discrimination value (DI value) of the five yellow rice wine samples was -25.69%, indicating that the odor detection system of air extraction and sampling could not distinguish the five yellow rice wine samples well.

[0047] image 3 It is the detection result of the odor detection system of the present invention, as can be seen from the figure, the rice wine s...

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Abstract

The invention discloses an odor detection system based on carrier gas sample introduction. The odor detection system is characterized by comprising a carrier gas source, a gas pipe, a pressure stabilizing valve A, a pressure gauge, a flow stabilizing valve, a flowmeter, a pipe filter, a detection gas sample introduction injector, a gas filter chamber, a gas filter column array, a thermostatic chamber, a gas detection chamber, a sensor array, a detection signal collector, computer control software, a pressure stabilizing valve B and a waste gas outlet. According to the odor detection system, detection gas is carried by carrier gas with stable pressure and stable flow, is filtered, enters the gas detection chamber, detected by the sensor array and is discharged from the waste gas outlet, meanwhile, the detection signal collector collects sensor signals, the computer control software performs data analysis finally, and a detection result is obtained. Compared with the odor detection system based on suction sample introduction in the prior art, the system improves and optimizes a gas sample introduction program, and detection stability and sample distinguishing capacity are further improved.

Description

technical field [0001] The invention relates to an odor detection system for carrier gas sampling. Background technique [0002] Humans obtain information through five basic senses, namely touch, sight, smell, hearing and taste. Among them, vision, hearing, and touch belong to physical quantity sensing, and their related signals can be represented by corresponding physical quantities such as light, sound, and pressure. The meaning of these physical quantities is simple and clear and easy to measure. However, the sense of smell belongs to chemical quantity sensing, and its mechanism of action is relatively complicated, but it is of great significance to human production and life, so the technology of smell detection has attracted more and more attention. [0003] At present, there are three main types of olfactory detection technologies based on gas detection: the first type is the sensory evaluation detection method based on the human body's own olfactory organs, which has ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/00
CPCG01N33/0009
Inventor 田师一陈军傅玲琳顾娟红张嵘毛岳忠叶笑
Owner ZHEJIANG GONGSHANG UNIVERSITY
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