KR20160006888A - Pretreatment device for providing concentrated and non-contaminated gas for electronic nose apparatus - Google Patents

Pretreatment device for providing concentrated and non-contaminated gas for electronic nose apparatus Download PDF

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Publication number
KR20160006888A
KR20160006888A KR1020140086277A KR20140086277A KR20160006888A KR 20160006888 A KR20160006888 A KR 20160006888A KR 1020140086277 A KR1020140086277 A KR 1020140086277A KR 20140086277 A KR20140086277 A KR 20140086277A KR 20160006888 A KR20160006888 A KR 20160006888A
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South Korea
Prior art keywords
purifying
pipe
purifier
sample
tube
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KR1020140086277A
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Korean (ko)
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KR101616254B1 (en
Inventor
이익재
강창익
이기목
허현승
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주식회사 과학기술분석센타
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Priority to KR1020140086277A priority Critical patent/KR101616254B1/en
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
    • G01N1/34—Purifying; Cleaning
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
    • G01N1/40—Concentrating samples
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Immunology (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Physics & Mathematics (AREA)
  • Pathology (AREA)
  • Molecular Biology (AREA)
  • Sampling And Sample Adjustment (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)

Abstract

TECHNICAL FIELD The present invention relates to an electronic nose pretreatment apparatus for supplying a gas for concentration non-contamination measurement, which concentrates measurement gas supplied to an electronic nose apparatus and prevents unnecessary substances from being mixed. The electronic nose pretreatment mechanism includes a purifier for purifying the incoming air, a purifier for purifying the purifier for purifying the purge air, a purifier for purifying the purge air, And a supply unit for supplying the measurement gas to a part of the main tube.

Description

TECHNICAL FIELD [0001] The present invention relates to an electronic nose pretreatment apparatus for supplying an enriched non-

TECHNICAL FIELD The present invention relates to an electronic nose pretreatment apparatus for supplying a gas for concentration non-contamination measurement, which concentrates measurement gas supplied to an electronic nose apparatus and prevents unnecessary substances from being mixed.

An electronic nose device for measuring the smell or gas component has a gas sensor array, in which the intensity of the measurement signal measured in the sensor array is low and the accuracy is low when the concentration of the measuring gas is low. Thus, when the gas for measurement is concentrated and supplied to the sensor array, the odor pattern can be measured more accurately and quickly.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide an electronic nose pretreatment apparatus that preliminarily processes a measurement gas supplied to an electronic nose apparatus in such a manner that a large amount of the measurement gas is concentrated and not contaminated.

According to an aspect of the present invention, there is provided an electronic nose pretreatment apparatus comprising: a purifier for purifying external air; A main pipe for introducing the outside air purified by the purifying unit from one side, mixing with the measuring gas, flowing out to the other side, and supplying the outside air to the electronic nose unit; And a supply unit for supplying the measurement gas to a part of the main tube.

The supply unit may include a sample supply pipe connected to an opening formed in a part of the main pipe; A sample tube disposed in the sample supply tube and having a permeable membrane through which gas inside the body is permeated toward the main tube; And a cap for applying pressure to the other side of the sample container so that the sample container is fixed to the inside of the sample supply pipe and blocking the opening of the sample supply pipe into which the sample container is inserted from the outside.

Further, it is preferable that the pressure of the fluid passing through the outer surface of the permeable membrane is lower than the pressure before passing through. It is preferable that one side of the sample tube including the permeable membrane is disposed in the hollow of the main tube.

The purifier may further include: an inlet port through which the outside air flows; A purifying pipe for supplying the outside air introduced through the inlet of one side to the main pipe connected to the other side; And a plurality of porous materials disposed inside the purifying pipe and purifying the introduced outside air. The purifier may further include at least one partition wall for preventing the plurality of porous materials from being carried to the outside of the purifier and allowing the fluid to pass therethrough.

In addition, the at least one partition may be disposed on at least one of the one side and the other side of the purifier. The at least one partition wall having a mesh to allow fluid to pass therethrough and not to allow the plurality of porous materials to pass through; And a housing that houses an outer portion of the mesh and has a cross-sectional shape substantially the same as the hollow section of the purifying tube. The cross-section of the purifying pipe is larger than the cross-section of the main pipe, and the shape and cross-sectional area of the opening formed in the housing for passing the fluid are substantially the same as those of the main pipe. The at least one partition is disposed at one side of the purifier, and the first partition is detachably coupled to the purifier by screwing or tight fitting.

According to the present invention, a separate sample container is used, and the pressure of the permeable membrane outside the permeable membrane through which the gas in the sample container is permeated is increased to increase the amount of the permeable measurement gas. Using the purified external air, Can be increased.

1 is an external perspective view of an electronic nose pretreatment apparatus according to an embodiment of the present invention,
Fig. 2 is a partially exploded perspective view of the electronic nose pretreatment mechanism of Fig. 1,
3 and 4 are internal sectional views of the electronic nose pretreatment mechanism of Fig. 1,
Fig. 5 is a perspective view of the partition wall of the electronic nose pretreatment mechanism of Fig. 1,
Fig. 6 is a perspective view of the sample container of the electronic nose pretreatment mechanism of Fig. 1;

The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component. And / or < / RTI > includes any combination of a plurality of related listed items or any of a plurality of related listed items.

It is to be understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, . On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between. Also, the fact that the first component and the second component on the network are connected or connected means that data can be exchanged between the first component and the second component by wire or wirelessly.

In addition, suffixes "module" and " part "for the components used in the following description are given merely for convenience of description, and do not give special significance or role in themselves. Accordingly, the terms "module" and "part" may be used interchangeably.

When such components are implemented in practical applications, two or more components may be combined into one component, or one component may be divided into two or more components as necessary.

The electronic nose pre-processing mechanism according to one embodiment of the present invention is a mechanism for concentrating the measurement gas and supplying the other components to the electronic nose apparatus with the minimum amount. The electronic nose device is equipped with a sensor array module capable of recognizing the odor pattern, and can analyze the components of the measuring gas. The sensor array module may be of a semiconductor type, an electrochemical type, an optical sensor, or a combination of two or more. Each sensing signal sensed in the sensor array module may be proportional to a specific gas or concentration of a particular gas group. The electronic nose device can analyze the odor pattern by comparing the sensed signals with the data of the pre-built database. Such an odor pattern can be used for monitoring and controlling the freshness and taste of food such as a fermentation process, determining the presence or absence of a disease depending on the smell, identifying the cause of the odor, and analyzing the fragrance of the cosmetics and perfume industry.

Hereinafter, the present invention will be described in more detail with reference to the drawings.

Fig. 1 is an external perspective view of an electronic nose pre-processing mechanism according to an embodiment of the present invention, Fig. 2 is a partially exploded perspective view of the electronic nose preprocessing mechanism of Fig. 1, Fig. 5 is a perspective view of the partition wall of the electronic nose pretreatment mechanism of Fig. 1, and Fig. 6 is a perspective view of the electronic nose pretreatment mechanism of Fig. 1 with respect to the sample vessel.

1, the electronic nose pretreatment device 10 includes a body 100 having a T-shaped channel formed therein, a sample container 400, a plurality of porous materials 500, first partition walls 350 and 360, And second barrier ribs 330 and 340. Each component is distinguished for descriptive convenience, and two or more components can be represented by one component, and one component can be divided into a plurality of components. For example, the T-shaped flow path inside the main body 100 can be represented by a main pipe 140 and a sample supply pipe 125. The electronic nose pretreatment mechanism 10 mixes the outside air purified by the purifying unit with the measurement gas, flows out to the other side, and is supplied to the electronic nose unit And a supply unit for supplying the measurement gas to a part of the main tube. Hereinafter, the expressions will be used in combination.

The main body 100 may further include a purifier pipe 130 connected to one side of the main pipe 140. The electronic nose pretreatment mechanism 10 may further include an inlet 320 through which external air flows into one side of the purifier pipe 130.

A plurality of porous materials 500 for purifying the outside air introduced through the inlet 320 may be disposed inside the purifying pipe 130. The plurality of porous materials 500 is a material such as activated carbon, zeolite, etc. having pores of about 15 to 95% of its volume, and can perform a purifying action due to its adsorption function and the like.

The plurality of porous materials 500 may be introduced into the inlet 320 or the main tube 140. The electronic nose pretreatment mechanism 10 may further include at least one partition wall for preventing the plurality of porous materials 500 from being carried out of the purifier pipe 130. It is preferable that the partition wall has two so as to block one side and the other side of the purifying pipe 130. The first barrier ribs 350 and 360 may be disposed on the other side of the purifier pipe 130. The second partitions (330, 340) may be disposed on one side of the purifying pipe (130). The first and second septa include first and second meshes 340 and 360 and first and second meshes 340 and 360 that pass the fluid (external air or purified air) and prevent the porous material from passing therethrough And an opening is formed at the center thereof to allow the fluid to pass through the first and second nettings 340 and 360. The cross-sectional shape is substantially the same as the inner (hollow) cross-section of the purifying pipe 130 The first and second housings 330 and 350 may be formed. Each housing may wrap one or both sides of each mesh.

It is preferable that the cross section of the purifying pipe 130 is larger than the cross section of the main pipe 140 in order to widen the volume for purifying the air. The opening of each of the inlet 320, the first and second housings 330 and 350, and the cross-sectional shape of the main tube 140 and the cross-sectional shape of the inlet tube 320 and the main tube 140, The cross-sectional area is preferably substantially the same. Each cross-sectional shape is preferably circular.

When a plurality of porous materials 500 are used for a long period of time, various substances are adsorbed and their functions are degraded. The electronic nose pretreatment mechanism 10 may further include a purge pipe cap 310 for facilitating the replacement of the plurality of porous materials 500 in the purge pipe 130. The purifier pipe cap 310 is fastened to the purifier pipe 130 by a tight fitting or a screw connection so that the purge pipe cap 310 can be easily separated. The purge pipe cap 310 may be integrally formed with the inlet 320 and the second partitions 330 and 340. The purge pipe cap 310 may further include a purge pipe O-ring 315 that seals the periphery of the purge pipe 130 so that outside air may be introduced into the inlet 320 only.

The inlet port 320, the purifier pipe 130, and the plurality of porous materials 500 may constitute a purifier for purifying the incoming air. The purifier may further include first and second diaphragms 350 and 360 and second diaphragms 330 and 340. The purifier pipe cap 310 and the purge pipe O-ring 315 may constitute a purifier.

The sample supply pipe 125 may be branched and connected to the main pipe 140. Although the connection portion 150 to which the sample supply pipe 125 and the main pipe 140 are connected is shown as T shape, the present invention is not limited thereto. For example, the sample supply pipe 125 may be connected at an angle through an opening formed in a part of the main pipe 140. The opening of the main tube 140 to which the sample supply tube 125 is coupled may be located anywhere. For example, although the main pipe 140 is shown as having an opening at the top, the opening may be formed at the bottom or side of the main pipe 140.

The electronic nose preprocessing mechanism 10 may further include a sample container 400 disposed inside the sample supply pipe 125. The sample container 400 includes a body 410 for receiving a sample to be measured, a permeable membrane 430 for permeating a gas sample in the body 410 and a permeable membrane 430 attached to an opening formed at one side of the body 410, And a seal 420 sealing the inside of the body 410 so as not to leak the gas.

The transmissive film 430 may be formed of a porous film or a non-porous film. A gas molecule having good affinity with the film can be transmitted to the low-pressure phase opposite to the permeable film 430. [ When the component of the gas to be measured is within a specific range, it is preferable to use a film having good affinity with a gas group of a specific range. If the range of the measurement gas is unknown, the permeable membrane 430 is preferably a membrane through which various gases can permeate. In general, when the thickness of the transmissive film 430 is reduced, the selectivity can be widened.

In this embodiment, a sample for jetting gas into the sample cylinder 400 can be accommodated. For example, the fermented food, particularly the kimchi, may be finely sliced and inserted into the sample container 400, and analyzed for the gas component from the kimchi, so that the fermented food can be used for detecting the degree of maturity of the kimchi, and the optimum taste. Therefore, it is preferable that the permeable membrane 430 permeates only the gas and does not permeate the liquid, the solid or the solid substance. A general gas permeable membrane satisfies this property.

The sample supply tube 125 and the sample tube 400 may constitute a supply part for supplying a measurement gas to the main tube 140. The supply unit may further include a sample container stopper 210 for applying pressure to the other side of the sample container 400 so that the sample container 400 is fixed inside the sample supply pipe 125. The sample bottle fixing cap 210 can block the opening 120 of the sample supply pipe 125 into which the sample bottle 400 is inserted from the outside. The sample bottle fixing stopper 210 may have a fixed stopper sealing O-ring 215 for sealing with the outside.

It is preferable that a part of the sample container 400 to which the permeable membrane 430 is attached is disposed inside the main tube 140 (middle). That is, the permeable membrane 430 is preferably disposed inside the main tube 140. (Purified external air) flowing inside the main pipe 140. [0064] In addition, this structure can reduce the pressure of the connection part 150 where the transmissive film 430 is disposed by narrowing the main tube 140 of the region where the transmissive film 430 is disposed substantially. Such a low pressure can further increase the transmittance of the gas inside the sample container 400 to the outside. In order to lower the pressure outside the permeable membrane 430, various structures using Bernoulli's theorem can be used. For example, a structure for reducing the diameter of the main pipe 140 at the connecting portion 150 can be used.

The operation structure of the electronic nose pretreatment mechanism 10 according to the present embodiment is as follows. External air may be introduced into the main body 100 through the inlet 320. The introduced external air passes through the second partition walls 330 and 340 and is purified by the plurality of porous materials 500 and then passes through the first partition walls 350 and 360 to move to the main tube 140 . The volume of the purifying pipe 130 is increased, and the purifying rate can be improved. By the purifying pipe cap 310, the plurality of porous materials 500 can easily be replaced when the lifetime is short. The plurality of porous materials 500 are not carried out of the purifying pipe 130 by the first and second partition walls. Sectional shape and sectional area of the inlet 320, the first and second housings 330 and 350, and the main tube 140 (particularly, the portion connected to the purifying pipe 130) are substantially the same, The fluid can be introduced into the main pipe 140 without a large resistance. By this purifying unit, it is possible to remove a substance which may be contaminated with the measurement gas.

The gas inside the sample container 400 is mixed with the purified external air flowing through the permeable membrane 430 and flowing into the main pipe 140. Since the connection portion 150 is low in pressure, the permeability of the gas permeable film 430 can be increased. The sample tube 400 is sealed to the outside except for the main tube 140, so that only the measuring gas except the air component can be supplied to the electron gun device. Further, the amount of gas to be measured can be increased at a low pressure of the connection portion 150. With this effect, a large amount of measurement gas, that is, a concentrated measurement gas can be obtained. Except for the purified external air of a certain component, the electronic nose pre-processing device 10 can supply pure and concentrated measurement gas to the electronic nose device.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be construed as limiting the scope of the invention as defined by the appended claims. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention.

100: main body 125: sample supply pipe
130: Purification pipe 140: Main pipe
150: connection part 400: sample container
500: Porous material

Claims (10)

A purifier for purifying the incoming outside air;
A main pipe for introducing the outside air purified by the purifying unit from one side, mixing with the measuring gas, flowing out to the other side, and supplying the outside air to the electronic nose unit; And
And a supply part for supplying the measurement gas to a part of the main pipe. The method according to claim 1,
The supply part
A sample supply pipe connected to an opening formed in a part of the main pipe;
A sample tube disposed in the sample supply tube and having a permeable membrane through which gas inside the body is permeated toward the main tube; And
And a cap for applying pressure to the other side of the sample container so that the sample container is fixed inside the sample supply pipe and blocking an opening of the sample supply pipe into which the sample container is inserted from the outside. 3. The method of claim 2,
Wherein the pressure of the fluid passing through the outer surface of the permeable membrane is lower than the pressure before passing through. The method of claim 3,
Wherein a part of one side of the sample vessel including the permeable membrane is disposed in the hollow of the main tube. The method according to claim 1,
The purifier may further include:
An inlet through which the outside air flows;
A purifying pipe for supplying the outside air introduced through the inlet of one side to the main pipe connected to the other side; And
And a plurality of porous materials disposed inside the purifying pipe and purifying the introduced outside air. 6. The method of claim 5,
Wherein the purifier further comprises at least one partition wall for preventing the plurality of porous materials from being carried out to the outside of the purifier and allowing the fluid to pass therethrough. The method according to claim 6,
Wherein the at least one partition is disposed on at least one of the one side and the other side of the purifying tube. 8. The method of claim 7,
Wherein the at least one partition wall comprises:
A mesh for passing a fluid therethrough and preventing the plurality of porous materials from passing therethrough; And
And a housing that houses an outer portion of the mesh and has a sectional shape substantially the same as the hollow section of the purifying tube. 9. The method of claim 8,
The cross section of the purifying pipe is larger than the cross section of the main pipe,
And a shape and a cross-sectional area of the opening formed in the inside of the housing to allow the fluid to pass therethrough are substantially equal to the shape and the cross-sectional area of the cross section of the main tube, respectively. 9. The method of claim 8,
Wherein the at least one partition is disposed at one side of the purifier, and the first partition is detachably coupled to the purifier by screwing or interference fit.
KR1020140086277A 2014-07-09 2014-07-09 Pretreatment device for providing concentrated and non-contaminated gas for electronic nose apparatus KR101616254B1 (en)

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KR101616254B1 KR101616254B1 (en) 2016-05-02

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105738503A (en) * 2016-02-01 2016-07-06 浙江大学 Method for quickly predicting fatty acid content of walnuts based on electronic nose
CN114924047A (en) * 2022-04-26 2022-08-19 仇克朝 Electronic nose for meat product detection and detection method thereof

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100769878B1 (en) * 2006-05-12 2007-10-24 한경대학교 산학협력단 Detetcting apparatus for concentration of gas

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105738503A (en) * 2016-02-01 2016-07-06 浙江大学 Method for quickly predicting fatty acid content of walnuts based on electronic nose
CN105738503B (en) * 2016-02-01 2017-10-20 浙江大学 A kind of method based on electronic nose fast prediction hickory nut content of fatty acid
CN114924047A (en) * 2022-04-26 2022-08-19 仇克朝 Electronic nose for meat product detection and detection method thereof
CN114924047B (en) * 2022-04-26 2023-12-22 四川王家渡食品有限公司 Electronic nose for meat product detection and detection method thereof

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