KR102620051B1 - Device to test system for sensing gas and method to test system for sensing gas - Google Patents

Abstract

The present invention relates to a gas detection system testing device. Specifically, in the apparatus for testing a gas detection system that detects gas as a two-dimensional image, the device includes: a test gas storage unit in which test gas is stored; A comparison gas storage unit connected to the test gas storage unit and storing a comparison gas that can be mixed with the test gas; A comparison gas supply unit connected to the comparison gas storage unit and the gas detection system and supplying the comparison gas to the gas detection system; It is connected to the test gas storage unit, the comparison gas storage unit, and the gas detection system, and mixes at least a portion of the comparison gas with the test gas to generate a plurality of test mixed gases with different gas concentrations, and the plurality of test mixed gases are converted into gases. A test mixed gas generator supplied to the detection system; and a setting unit that compares and analyzes the detection values of a plurality of test mixed gases supplied to the gas detection system with the detection values of the comparison gas to preset a two-dimensional image according to the gas concentration. A gas detection system test device may be provided. .

Description

Gas detection system test device and test method {DEVICE TO TEST SYSTEM FOR SENSING GAS AND METHOD TO TEST SYSTEM FOR SENSING GAS}

The present invention relates to a gas detection system test apparatus and test method.

Generally, surface plasmon refers to a quantized vibration mode of free electrons propagating along the surface of a metal thin film. These surface plasmons are excited by incident light that passes through a dielectric medium such as a prism and enters the metal thin film at an angle greater than the critical angle of the dielectric medium, causing resonance. This is called surface plasmon resonance (hereinafter referred to as ‘SPR’).

At this time, the incident angle at which SPR occurs, that is, the SPR angle, is very sensitive to changes in the refractive index of the material close to the metal thin film. These characteristics of SPR can be applied as a sensor that measures quantitative analysis, qualitative analysis, thickness or concentration of the material to be measured from changes in the refractive index of the material close to the metal thin film, that is, the material to be measured.

An attempt to apply SPR as a sensor was first proposed by C. Nylander and B. Liedberg in 1982 [C. Nylander and B. Liedberg, “Gas detection by means of surface plasmons resonance”, Sensors and Actuators 3, pp. 79-88, 1982.]. Afterwards, the SPR sensor became one of the representative label-free biosensor systems that can measure the interactions of biomolecules without markers such as fluorescent substances. It was first commercialized by Bicore AB in Sweden in 1990, and is currently used It has become established as a universal sensor system used by many bio-related researchers.

Meanwhile, to briefly describe the SPR sensor according to the prior art, the SPR sensor consists of a substrate, a metal thin film formed on the upper part of the substrate, a prism formed on the lower part of the substrate to be optically coupled to the metal thin film, a light source that provides light to the prism, and a substrate. It includes a light receiving unit that detects light reflected from. Here, the material to be measured is located on a metal thin film.

At this time, the SPR sensor according to the prior art measures the change in SPR angle and reflectance according to the change in the angle of the incident light entering the prism through the light receiver, and the change in refractive index at any point or pixel of the material to be measured is measured, Components contained in the substance to be measured can be detected.

Meanwhile, in 1987 and 1988, surface plasmon resonance imaging was used to fix the angle and wavelength of incident light and measure the change in refractive index of the material to be measured at each pixel on a metal thin film as an image using two-dimensional expanded incident light. A sensor (surface plasmon resonance imaging, hereinafter referred to as 'SPRI') was proposed.

Briefly explaining SPRI according to the prior art, SPRI consists of a substrate, a metal thin film formed on the top of the substrate, a prism formed on the bottom of the substrate to be optically coupled to the metal thin film, a light source that provides light to the prism, and light reflected from the substrate. It includes a light receiving unit that detects. Here, the material to be measured is located on a metal thin film.

At this time, SPRI according to the prior art expands the light provided from the light source into two-dimensional parallel light, enters the prism, and measures the light reflected from the substrate in each pixel unit, such as a multiple channel light receiving element. , a CCD (charge-coupled device) camera is used. At this time, as the change in refractive index of the material to be measured is measured as a two-dimensional image through a CCD camera, components contained in the material to be measured can be detected.

Meanwhile, SPRI is mainly used as a sensor to detect components contained in liquid measurement target substances. For example, the SPRI sensor chip, which detects the components contained in the liquid measurement target material, is capable of simultaneous imaging of the patterned chip surface, so multiple components contained in the liquid measurement target material can be multiplexed with one chip. It has the advantage of being detectable.

Accordingly, attempts are being made to utilize SPRI as a sensor to detect components included in the gaseous measurement target material. However, detecting the SPR refractive index change of the gaseous measurement target material is better than detecting the SPR refractive index change of the liquid measurement target material. Because it is more difficult than detecting, there is no technology that can not only stably detect components contained in a gaseous measurement target substance using SPRI, but also multiplex detect multiple components contained in a gaseous measurement target substance. can see.

Therefore, a gas detection chip and a gas detection device including the same are capable of not only stably detecting the components contained in the gaseous measurement target material using SPRI, but also capable of multiplexing detection of a plurality of components included in the gaseous measurement target material. There is a need for technology.

Furthermore, there is a need for technology for gas detection system test equipment and test methods for testing newly developed gas detection systems.

Embodiments of the present invention were devised to solve the above-described conventional problems. By controlling the angles of the light source and light receiver and improving the signal conversion algorithm, the components contained in the gaseous measurement target material can be stably measured using SPRI. A gas detection system test device and test method for testing a gas detection system that not only detects but also detects multiple components contained in the gaseous measurement target material by receiving the gaseous measurement target material through a gas injection module. We would like to provide

In addition, embodiments of the present invention seek to provide a gas detection system test device and test method that can simplify the system and reduce manufacturing costs as the number of flow meters required is reduced compared to the prior art.

According to one aspect of the present invention, an apparatus for testing a gas detection system that detects gas as a two-dimensional image includes: a test gas storage unit that stores a test gas; A comparison gas storage unit connected to the test gas storage unit and storing a comparison gas that can be mixed with the test gas; a comparison gas supply unit connected to the comparison gas storage unit and the gas detection system and supplying the comparison gas to the gas detection system; It is connected to the test gas storage unit, the comparison gas storage unit, and the gas detection system, and mixes at least a portion of the comparison gas with the test gas to generate a plurality of test mixed gases having different gas concentrations, and a plurality of test gas mixtures. a test mixed gas generator that supplies the test mixed gas to the gas detection system; and a setting unit for pre-setting a two-dimensional image according to gas concentration by comparing and analyzing the detection values of the plurality of test mixed gases supplied to the gas detection system and the detection values of the comparison gas. A gas detection system test device is provided. It can be.

In addition, the test gas storage unit includes a first test gas storage tank in which the first test gas is stored; a second test gas storage tank in which the second test gas is stored; And it may include a third test gas storage tank in which the third test gas is stored.

In addition, the test mixed gas generator is connected between the first test gas storage tank and the gas detection system, mixes the first test gas and the comparison gas to generate a first test mixed gas, and A first supply line that supplies mixed gas for testing to the gas detection system; It is connected between the second test gas storage tank and the gas detection system, mixes the second test gas and the comparison gas to generate a second test gas mixture, and transmits the second test gas mixture to the gas detection system. a second supply line that supplies; and is connected between the third test gas storage tank and the gas detection system, mixes the third test gas and the comparison gas to generate a third test mixed gas, and transmits the third test gas mixture to the gas detection system. It may include a third supply line supplying to.

In addition, the first test mixed gas, the second test mixed gas, and the third test mixed gas are sequentially supplied to the gas detection system through the first supply line, the second supply line, and the third supply line, respectively. can be supplied.

In addition, the test mixed gas generator includes a connection line connecting the end of the first supply line, the end of the second supply line, and the end of the third supply line; a first branch line branching from the connection line; a second branch line branching from the connection line; And it may further include a third branch line branching from the connection line.

In addition, the comparison gas supply unit includes a fourth supply line connected between the comparison gas storage unit and the gas detection system; a first comparison gas supply valve connected to the fourth supply line at the rear end of the comparison gas storage unit; a pressure regulator provided in front of the first comparison gas supply valve; And it may include a second comparison gas supply valve provided at the rear of the pressure regulator.

In addition, the test mixed gas generator includes a fourth branch line branched from the fourth supply line; a first mixing line connected in parallel with the fourth branch line and in communication with the first supply line; a second mixing line connected in parallel with the fourth branch line and in communication with the second supply line; And it may further include a third mixing line connected in parallel with the fourth branch line and in communication with the third supply line.

In addition, the mixed gas generator for testing includes a first flow meter provided in the first supply line; a second flow meter provided in the second supply line; a second flow meter provided in the third supply line; a fourth flow meter provided on the connection line; And it may further include a fifth flow meter provided in the fourth branch line.

In addition, a first vent part for selectively discharging the first test mixed gas is provided at the end of the first mixing line, and the first vent part includes a first vent valve installed to be openable and closed in the first mixing line; And it may include a first pressure gauge installed at the front of the first vent valve to measure the pressure of the first mixing line.

In addition, a second vent portion for selectively discharging the second test mixed gas is provided at an end of the second mixing line, and the second vent portion includes a second vent valve installed to be openable and closed in the second mixing line; And it may include a second pressure gauge installed at the front of the second vent valve to measure the pressure of the second mixing line.

In addition, a third vent part for selectively discharging the first test mixed gas is provided at the end of the third mixing line, and the third vent part includes a third vent valve installed to be openable and closed in the third mixing line; And it may include a third pressure gauge installed at the front of the third vent valve to measure the pressure of the third mixing line.

According to another aspect of the present invention, in the method of testing a gas detection system that detects gas as a two-dimensional image, mixing at least a portion of a comparison gas with a test gas to generate a plurality of mixed test gases with different gas concentrations step; Supplying the plurality of generated test mixed gases to the gas detection system to detect the plurality of test mixed gases as two-dimensional images; supplying a comparison gas to the gas detection system and detecting the comparison gas as a two-dimensional image; and comparing and analyzing detection values of the plurality of test mixed gases supplied to the gas detection system and detection values of the comparison gas to preset a two-dimensional image according to gas concentration. A gas detection system test method is provided. It can be.

In addition, the plurality of test mixed gases include a first test mixed gas generated by mixing the first test gas and the comparison gas, a second test mixed gas generated by mixing the second test gas and the comparison gas, and a third test gas mixture. It includes a third test gas mixture generated by mixing the test gas and the comparison gas, and the first test gas mixture, the second test gas mixture, and the third test gas mixture are sequentially supplied to the gas detection system. You can.

According to embodiments of the present invention, by controlling the angles of the light source and light receiver and improving the signal conversion algorithm, not only can components contained in the gaseous measurement target material be detected using SPRI, but the gaseous phase can be detected through a gas injection module. There is an effect of being able to test a gas detection system that can multiplex detection of multiple components contained in the gaseous measurement target material by receiving the measurement target material.

Additionally, according to embodiments of the present invention, as the number of flow meters required is reduced compared to the prior art, the system is simplified and manufacturing costs can be reduced.

Figure 1 is a front view showing a gas detection device according to an embodiment of the present invention.
FIG. 2 is a side view of the gas detection device of FIG. 1 as seen from the side.
FIG. 3 is a plan view showing a gas sensing chip of the gas sensing device of FIG. 1.
FIG. 4 is a side view showing the gas injection module of the gas detection device of FIG. 1.
FIG. 5 is a bottom view of the gas injection module of FIG. 4 as seen from the bottom.
FIG. 6 is an operational state diagram of the gas detection device of FIG. 1.
Figure 7 is a front view showing a gas detection device according to another embodiment of the present invention.
Figure 8 is a side view showing the gas detection device of Figure 7 from the side.
FIG. 9 is a plan view showing the gas detection chip of the gas detection device of FIG. 7.
Figure 10 is an operational state diagram of the gas detection device of Figure 7.
Figure 11 is a front view showing a gas detection device according to another embodiment of the present invention.
FIG. 12 is a plan view showing the gas detection chip of the gas detection device of FIG. 11.
Figure 13 is an operational state diagram of the gas detection device of Figure 11.
Figure 14 is a front view showing a gas detection system according to an embodiment of the present invention.
Figure 15 is a block diagram showing a gas detection system testing device according to an embodiment of the present invention.
FIG. 16 is a structural diagram schematically showing the gas detection system test device of FIG. 15.
Figure 17 is a flowchart showing a gas detection system testing method according to an embodiment of the present invention.

Hereinafter, specific embodiments for implementing the spirit of the present invention will be described in detail with reference to the drawings.

In addition, when describing the present invention, if it is determined that a detailed description of a related known configuration or function may obscure the gist of the present invention, the detailed description will be omitted.

Additionally, when a component is mentioned as being 'coupled' or 'connected' to another component, it should be understood that it may be directly coupled or connected to the other component, but that other components may exist in between.

The terms used in this specification are merely used to describe specific embodiments and are not intended to limit the invention. Singular expressions include plural expressions unless the context clearly dictates otherwise.

In addition, it should be noted in advance that in this specification, expressions such as one side, the other side, upper side, lower side, etc. are explained based on the illustrations in the drawings, and may be expressed differently if the direction of the object in question is changed. For the same reason, in the accompanying drawings, some components are exaggerated, omitted, or schematically shown, and the size of each component does not entirely reflect the actual size.

Additionally, terms including ordinal numbers, such as first, second, etc., may be used to describe various components, but the components are not limited by these terms. These terms are used only to distinguish one component from another.

As used in the specification, the meaning of 'comprising' is to specify a specific characteristic, area, integer, step, operation, element and/or component, and to specify another specific property, area, integer, step, operation, element, component and/or group. It does not exclude the existence or addition of .

Hereinafter, the specific configuration of a gas detection device according to an embodiment of the present invention will be described with reference to the drawings.

Referring to FIGS. 1 to 5 , a gas detection device 100 according to an embodiment of the present invention may include a gas detection chip 10 and a gas injection module 20.

The gas detection chip 10 can detect at least one component among a plurality of components included in a gaseous measurement target substance (hereinafter referred to as 'gas') in real time. To this end, the gas sensing chip 10 may include a substrate 11, a prism 12, a metal layer 13, a metal oxide layer 14, and a ligand compound layer 15.

The substrate 11 may support the metal layer 13. This substrate 11 may be provided as a transparent substrate capable of transmitting light. For example, the substrate 11 may be provided as a glass substrate, a transparent plastic substrate, etc.

The prism 12 can control the path of light incident on the substrate 11. For this purpose, the prism 12 may be provided on the lower surface of the substrate 11. Here, the light incident on the prism 12 may be two-dimensional parallel light emitted from the light source unit 200 of the gas detection system 1000, which will be described later, expanded through a separate means. The two-dimensional parallel light incident on the prism 12 can pass through the substrate 11 and reach the lower surface of the metal layer 13, and the two-dimensional parallel light that reaches the lower surface of the metal layer 13 can reach the lower surface of the metal layer 13. It may be reflected and provided to the light receiving unit 300 of the gas detection system 1000, which will be described later, and then converted into a two-dimensional image in the light receiving unit 300. This will be explained later.

The metal layer 13 reacts with two-dimensional parallel light transmitted through the substrate 11 to generate a surface plasmon resonance (SPR) phenomenon, thereby generating a surface plasmon wave (SPW). For this purpose, the metal layer 13 may be provided on the upper surface of the substrate 11. For example, the metal layer 13 may include at least one of metals that can cause a surface plasmon resonance (SPR) phenomenon, such as gold (Au), silver (Ag), and platinum (Pt).

The metal oxide layer 14 can improve the sensitivity of the gas sensing chip 10 by amplifying the surface plasmon resonance (SPR) phenomenon. To this end, the metal oxide layer 14 may be provided on at least a portion of the upper surface of the metal layer 13. For example, the metal oxide layer 14 may include at least one of TiO ₂ , SiO ₂ , ZnO, In ₂ O ₃ , WO ₃ and SnO ₂ .

This metal oxide layer 14 may extend in a predetermined direction on the metal layer 13 and may be provided in plural pieces. At this time, the plurality of metal oxide layers 14 may be spaced apart in a direction substantially perpendicular to the direction in which the metal oxide layer 14 extends. As such, in this embodiment, a case in which a plurality of metal oxide layers 14 are provided on a part of the upper surface of the metal layer 13 has been described as an example, but this is only an example, and as a result, the spirit of the present invention is lost. It is not limited. For example, the metal oxide layer 14 may be provided to cover the entire upper surface of the metal layer 13.

The ligand compound layer 15 can detect any one component among a plurality of components contained in the gas. To this end, the ligand compound layer 15 may be disposed on at least a portion of the upper surface of the metal oxide layer 14 so as to contact at least one gas at least once. Additionally, the ligand compound layer 15 may include a ligand compound that can interact with components contained in the gas to be detected.

Specifically, the ligand compound layer 15 may come into contact with at least one gas at least once and react with any one component among a plurality of components included in the gas. When the ligand compound layer 15 reacts with one of the plurality of components contained in the gas, the surface plasmon resonance (SPR) signal may change, and by analyzing this change, a specific component of the gas can be detected. .

At this time, the ligand compound layer 15 may be provided in plural pieces. The plurality of ligand compound layers 15 include a plurality of different ligand compounds capable of reacting with a plurality of components contained in the gas, or the same ligand compound capable of reacting with any one of the plurality of components contained in the gas. may include.

Meanwhile, the plurality of ligand compound layers 15 may be spaced apart in a first direction into which gas is injected, and each ligand compound layer 15 may extend along a second direction perpendicular to the first direction. Here, the first direction refers to the x-axis direction of FIG. 3, and the second direction refers to the y-axis direction of FIG. 3.

In this case, the plurality of ligand compound layers 15 spaced apart in the first direction may sequentially contact the gas injected in the first direction through the gas injection module 20. Since the direction in which the gas is injected and the direction in which the plurality of ligand compound layers 15 are disposed are perpendicular to each other, the gas can be in regular and repeated contact with the plurality of ligand compound layers 15.

Specifically, while the plurality of ligand compound layers 15 are each regularly and repeatedly contacted with a plurality of gases, a plurality of components contained in the gas may interact with the plurality of ligand compound layers 15 regularly and repeatedly. For example, when the plurality of ligand compound layers 15 include a plurality of different ligand compounds capable of reacting with a plurality of components contained in the gas, the plurality of gases each regularly react with the plurality of ligand compound layers 15. During repeated contact, a plurality of components contained in the gas react with the plurality of ligand compound layers 15 and can be detected repeatedly and regularly. On the other hand, when the plurality of ligand compound layers 15 contain the same ligand compound capable of reacting with any one of the plurality of components contained in the gas, the plurality of gases each react with the plurality of ligand compound layers 15 in a regular manner. During repeated contact, any one of the plurality of components contained in the gas may react with the plurality of ligand compound layers 15 and be repeatedly detected.

The gas injection module 20 may be combined with the gas detection chip 10 to inject gas into the gas detection chip 10 and discharge the gas injected into the gas detection chip 10. To this end, the gas injection module 20 may include a first body 21 provided for gas injection and discharge, and a second body 22 coupled to the lower surface of the first body 21.

A gas inlet 211 through which gas is injected and a gas outlet 212 through which the gas injected through the gas inlet 211 is discharged may be connected to the first body 11. At this time, at least a portion of the gas injection port 211 may be placed on the outside of the first body 21, and the remainder of the gas injection port 211 may be placed on the inside of the first body 21. Additionally, at least a portion of the gas outlet 212 may be disposed on the outside of the first body 21, and the remainder of the gas outlet 212 may be disposed on the inside of the first body 21.

Accordingly, one end of the gas inlet 211 is connected to a separate gas supply module (not shown) on the outside of the first body 21 to receive gas, and the other end of the gas inlet 211 is connected to the first main body 21. Inside the main body 21, it may communicate with a gas channel 222 provided in the second main body 22, which will be described later. In addition, one end of the gas outlet 212 is connected to a separate gas recovery module (not shown) on the outside of the first body 21 to allow gas to be recovered by the gas recovery module, and the gas outlet 212 is connected to a separate gas recovery module (not shown). The other end may communicate with a gas channel 222 provided in the second body 22, which will be described later, inside the first body 21. Accordingly, the gas injected through the gas inlet 211 may pass through the gas channel 222 and then be discharged through the gas outlet 212. At this time, the gas injected through the gas inlet 211 may contact the ligand compound layer 15 of the gas sensing chip 10 at least once while passing through the gas channel 222, and in this process, the gas contained in the gas Any one of the plurality of components may be detected by reacting with the ligand compound layer 15.

The second body 22 may provide a gas flow path so that the gas injected through the first body 22 can contact the ligand compound layer 15 of the gas sensing chip 10 at least once. To this end, the second body 22 is connected to the inside of the circumferential surface of the first body 21 and may be in contact with at least one of the metal layer 13 and the metal oxide layer 14 of the gas sensing chip 10. .

At this time, the second body 22 may be provided with a gas channel 221 through which a gas containing a plurality of components flows. The gas channel 221 may extend in a predetermined direction, for example, a first direction, and may have the shape of a groove recessed from the lower surface of the second body 22. At this time, both ends of the gas channel 221 may be located inside the peripheral surface of the second body 22, respectively.

Meanwhile, a plurality of gas channels 221 may be provided, and the plurality of gas channels 222 may extend along a first direction to allow gas to flow in the first direction. Here, the first direction refers to the x-axis direction in FIG. 5. The gas flowing in the first direction along the gas channel 222 may regularly and repeatedly come into contact with a plurality of ligand compound layers 15 (see FIG. 3) spaced apart in the first direction. In contrast, the gas flowing in the first direction along the gas channel 222 is continuously in contact with the ligand compound layer (15a, see FIG. 9) extending in the first direction, or at least a portion is in one of the first direction and the second direction. It may be repeatedly and irregularly contacted with a ligand compound layer (15b, see FIG. 12) arranged in a direction that is different from at least one direction.

Meanwhile, a packing member 222 may be coupled to the peripheral surface of the second body 22. This packing member 222 can seal between the second body 22 and one of the metal layer 13 and the metal oxide layer 14 of the gas sensing chip 10. In this way, since the space between the gas detection chip 10 and the second body 22 is sealed by the packing member 222, the gas flowing through the gas channel 222 is connected to the gas detection chip 10 and the gas injection module 20. There is no need to worry about it leaking out.

Hereinafter, the operation and effects of the gas detection device according to an embodiment of the present invention will be described with reference to FIG. 6.

As shown in (a) of FIG. 6, first, when gas is injected through one end of the gas inlet 211, the gas injected through one end of the gas inlet 211 flows to the other end of the gas inlet 211. After moving to the end, it flows into the gas channel 222 in communication with the other end of the gas inlet 211. The gas flowing into the gas channel 222 passes through the gas channel 222 and is then discharged through the gas outlet 212.

Here, as shown in (b) of FIG. 6, while the gas flowing into the gas channel 222 passes through the gas channel 222, the gas regularly interacts with the ligand compound layer 15 of the gas sensing chip 10. It is contacted repeatedly. Each time the gas contacts the ligand compound layer 15, one of the plurality of components contained in the gas reacts with the ligand compound layer 15 and can be detected.

On the other hand, when the plurality of ligand compound layers 15 include a plurality of different ligand compounds capable of reacting with a plurality of components contained in the gas, the plurality of gases each regularly repeat with the plurality of ligand compound layers 15. During contact, a plurality of components contained in the gas react with the plurality of ligand compound layers 15 and can be detected repeatedly and regularly. On the other hand, when the plurality of ligand compound layers 15 contain the same ligand compound capable of reacting with any one of the plurality of components contained in the gas, the plurality of gases each regularly react with the plurality of ligand compound layers 15. During repeated contact, any one of the plurality of components contained in the gas may react with the plurality of ligand compound layers 15 and be repeatedly detected.

Therefore, by simply injecting a gaseous measurement target substance, for example, a plurality of different types or the same type of gas, rather than a liquid measurement target material once into the gas detection device 1, the components contained in the plurality of different types or the same type of gas can be removed. Since at least one of the components can be detected repeatedly or continuously, efficient and highly reliable detection is possible.

In addition, in the gas detection device 1, the gaseous measurement target material can be measured at room temperature, and once the measurement of the gaseous measurement target material is completed, the gas detection device 1 can be reused without a separate cleaning process. Accordingly, damage to the gas detection device 1 can be prevented and economic efficiency can be secured.

Hereinafter, a gas detection device according to another embodiment of the present invention will be described with reference to FIGS. 7 to 9.

Referring to FIGS. 7 to 9 , a gas detection device 100a according to another embodiment of the present invention may include a gas detection chip 10a and a gas injection module 20. The gas detection device 100a shown in FIGS. 7 to 9 is substantially the same as the gas detection chip 10 described with reference to FIGS. 1 to 5 except for the gas detection chip 10a. Therefore, the differences will be described below. The description will be centered on the corresponding gas detection chip 10a, and the description and reference numerals of the above-described embodiment will be used for the same parts.

The gas sensing chip 10a may include a substrate 11, a prism 12, a metal layer 13, a metal oxide layer 14, and a ligand compound layer 15a. At this time, the gas sensing chip 10a shown in FIGS. 7 to 9 is substantially the same as the gas sensing chip 10 described with reference to FIGS. 1 to 5 except for the ligand compound layer 15a, so the differences are described below. The description will be centered on the corresponding ligand compound layer 15a, and the description and reference numerals of the above-described embodiment will be used for the same parts.

The ligand compound layer 15a may be provided in plural pieces. The plurality of ligand compound layers 15a include a plurality of different ligand compounds capable of reacting with a plurality of components contained in the gas, or the same ligand compound capable of reacting with any one of the plurality of components contained in the gas. may include.

At this time, the plurality of ligand compound layers 15a may be spaced apart in a second direction perpendicular to the first direction in which gas is injected, and each ligand compound layer 15a may extend along the first direction. Here, the first direction refers to the x-axis direction in FIG. 4, and the second direction refers to the y-axis direction in FIG. 4. In this case, the plurality of ligand compound layers 15a spaced apart in the second direction may be in contact with gas injected in the first direction through the gas injection module 20, which will be described later. Since the direction in which the gas is injected and the direction in which the plurality of ligand compound layers 15a are disposed are substantially parallel, the plurality of gases can be continuously contacted with each of the plurality of ligand compound layers 15a.

On the other hand, when the plurality of ligand compound layers 15a include a plurality of different ligand compounds capable of reacting with a plurality of components contained in the gas, the plurality of gases are continuously contacted with each of the plurality of ligand compound layers 15a. During this time, any one of the plurality of components contained in the gas may continuously react with the plurality of ligand compound layers 15a and be repeatedly detected. Here, the types of gases injected into the plurality of ligand compound layers 15a may be different. As a result, different gases are injected into the different ligand compound layers 15a, and specific components contained in the different gases are continuously detected in the different ligand compound layers 15a, so that the components of the different gases are continuously detected. The number of experiments for detection can be significantly reduced compared to the past.

On the other hand, when the plurality of ligand compound layers 15a contain the same ligand compound capable of reacting with any one of the plurality of components contained in the gas, the plurality of gases each continuously form the plurality of ligand compound layers 15a. During contact with the gas, any one of the plurality of components contained in the gas may react with the plurality of ligand compound layers 15a and be repeatedly detected. In this case, the types of gases injected into the plurality of ligand compound layers 15a may be the same. As a result, gases of the same type are injected into the same type of ligand compound layers 15a, and specific components contained in the same type of gas are continuously detected in the same type of ligand compound layers 15a, so that the components of the same type of gas The number of experiments for detection can be greatly reduced compared to before.

Hereinafter, the operation and effects of a gas detection device according to another embodiment of the present invention will be described with reference to FIG. 10.

As shown in (a) of FIG. 10, first, when gas is injected through one end of the gas inlet 211, the gas injected through one end of the gas inlet 211 flows to the other end of the gas inlet 211. After moving to the end, it flows into the gas channel 222 in communication with the other end of the gas inlet 211. The gas flowing into the gas channel 222 passes through the gas channel 222 and is then discharged through the gas outlet 212.

At this time, as shown in (b) of FIG. 10, the injection direction of the gas flowing into the gas channel 222 and the extension direction of the gas channel 222 are substantially the same, so the gas flowing into the gas channel 222 While passing through the gas channel 222, it continuously contacts the ligand compound layer 15a of the gas sensing chip 10.

At this time, the types of gases injected into the plurality of ligand compound layers 15a may be different from each other, and the plurality of ligand compound layers 15a may contain a plurality of different ligand compounds or gases that can react with a plurality of components contained in the gas. It may contain the same ligand compound that can react with any one of the plurality of components included. As a result, the heterogeneous or homogeneous gases continuously react with the heterogeneous ligand compound layers 15a, and a specific component contained in the heterogeneous or homogeneous gases, for example, interacts with the gas-contacted ligand compound layer 15a. Components may be repeatedly detected in each of the heterogeneous or homogeneous ligand compound layers 15a. Accordingly, the number of experiments for detecting components of heterogeneous or similar gases can be significantly reduced compared to the past, and even if the components of heterogeneous or homogeneous gases change in real time, the detection values are detected repeatedly, so the reliability of the detection values This may increase.

Hereinafter, a gas detection device 100b according to another embodiment of the present invention will be described with reference to FIGS. 11 and 12.

Referring to FIGS. 11 and 12 , a gas detection device 100b according to another embodiment of the present invention may include a gas detection chip 10b and a gas injection module 20. The gas detection device 100b shown in FIGS. 11 and 12 is substantially the same as the gas detection chip 10 described with reference to FIGS. 1 to 5, except for the gas detection chip 10b. Therefore, the differences will be described below. The description will be centered on the corresponding gas detection chip 10b, and the description and reference numerals of the above-described embodiment will be used for the same parts.

The gas sensing chip 10b may include a substrate 11, a prism 12, a metal layer 13, a metal oxide layer 14, and a ligand compound layer 15b. At this time, the gas sensing chip 10b shown in FIGS. 11 and 12 is substantially the same as the gas sensing chip 10 described with reference to FIGS. 1 to 5 except for the ligand compound layer 15b, so the differences are described below. The description will be centered on the corresponding ligand compound layer 15b, and the description and reference numerals of the above-described embodiment will be used for the same parts.

At least a portion of the ligand compound layer 15b may be arranged in a direction that is offset from at least one of a first direction in which gas is injected and a second direction perpendicular to the first direction. Here, the first direction refers to the x-axis direction of FIG. 6, and the second direction refers to the y-axis direction of FIG. 6.

This ligand compound layer 15b may include a ligand compound that can react with any one of a plurality of components included in the gas. At this time, when a plurality of gases are injected into the ligand compound layer 15b, one of the plurality of components contained in the plurality of gases may react with the ligand compound layer 15b multiple times and be repeatedly detected. Here, the types of gases injected into the ligand compound layer 15b may be the same. As a result, gases of the same type are injected into the ligand compound layer 15b, and specific components contained in the gases of the same type are detected multiple times in the ligand compound layer 15b, respectively, increasing the number of experiments for detecting components of the gases of the same type. Not only can it be greatly reduced compared to before, but the reliability of the detected value can be improved.

Hereinafter, the operation and effects of a gas detection device according to another embodiment of the present invention will be described with reference to FIG. 13.

As shown in (a) of FIG. 13, first, when gas is injected through one end of the gas inlet 211, the gas injected through one end of the gas inlet 211 flows to the other end of the gas inlet 211. After moving to the end, it flows into the gas channel 222 in communication with the other end of the gas inlet 211. The gas flowing into the gas channel 222 passes through the gas channel 222 and is then discharged through the gas outlet 212.

At this time, as shown in (b) of FIG. 13, the injection direction of the gas flowing into the gas channel 222 and the extension direction of the gas channel 222 are substantially perpendicular or offset from each other, so the gas channel 222 While the gas flowing into the gas channel 222 passes through the gas channel 222, it irregularly and repeatedly contacts the ligand compound layer 15b of the gas sensing chip 10.

At this time, the types of gases injected into the plurality of ligand compound layers 15b may be the same, and the plurality of ligand compound layers 15b may contain a ligand compound that can react with one of the plurality of components contained in the gas. It can be included. For example, gases of the same type are injected into each of the ligand compound layers 15b and contacted with each of the ligand compound layers 15b irregularly and repeatedly, and specific components contained in the gases of the same type are injected into each of the ligand compound layers 15b. It can be detected whenever it is touched. Accordingly, the number of experiments for detecting components of the same type of gas can be greatly reduced compared to the past, and since detection values can be obtained repeatedly, the reliability of detection values can be improved.

Hereinafter, a gas detection system according to an embodiment of the present invention will be described with reference to FIG. 14.

Referring to FIG. 14, a gas detection system 1000 according to an embodiment of the present invention may include a gas detection device 100, a light source unit 200, and a light receiving unit 300. However, since the gas detection device 100 has been described above, the following description will focus on the light source unit 200 and the light receiving unit 300, and the description and reference numerals of the above-described embodiment will be used for the same parts. .

The light source unit 200 may emit light, and the light emitted from the light source unit 200 may be expanded into two-dimensional parallel light through a separate means such as an optical expander (not shown) and provided to the gas detection device 100. there is. For example, the light source unit 200 may be provided with a laser diode, a light emitting diode, etc. that uses white light with multiple wavelengths or monochromatic light with a single wavelength.

At this time, the light emitted from the light source unit 200 enters the gas detection device 100 at a low angle to match the low refractive index of the gas phase, so the gas detection device 100 can detect the gas with high sensitivity. . On the other hand, from the perspective of the measurement algorithm, the FWHM (full width at half maximum) of the SPR curve uses a very narrow shape in the gas phase, so that the signal is transmitted in a fixed-angle mode of the light source unit 200. By measuring, the sensitivity of the gas detection device 100 can be maximized.

Meanwhile, a new signal conversion algorithm can be applied to compensate for the narrow dynamic range of the typical fixed angle mode and determine the optimal fixed angle. For example, the signal transformation algorithm uses the differentiation of the normalized raw curve by linear regression fitting and sigmoid asymmetric fitting to determine the left side of the SPR dip curve. The optimal fixation angle can be determined with the minimum reflection intensity in the linear range of R2=0.99.

For example, the light receiving unit 300 is a multiple channel capable of measuring two-dimensional parallel light incident on the prism 12, passing through the substrate 11, and then reflected from the lower surface of the metal layer 13 on a per-pixel basis. The light receiving element may be, for example, a CCD (Charge-Coupled Device) camera.

Hereinafter, a gas detection system test device according to an embodiment of the present invention will be described with reference to FIGS. 15 and 16.

15 and 16, the gas detection system test device 2000 according to an embodiment of the present invention is a device for testing the gas detection system 1000 that detects gas as a two-dimensional image, and the test gas is stored. test gas storage unit (2001), a comparison gas storage unit (2002) connected to the test gas storage unit (2001) and storing a comparison gas that can be mixed with the test gas, a comparison gas storage unit (2002), and gas detection A comparison gas supply unit (2003), a test gas storage unit (2001), a comparison gas storage unit (2002), and a gas detection system (1000) that are connected to the system (1000) and supply comparison gas to the gas detection system (1000). A test mixed gas generator ( 2004) and a setting unit 2005 that compares and analyzes the detection values of a plurality of test mixed gases supplied to the gas detection system 1000 and the detection values of the comparison gas to preset a two-dimensional image according to the gas concentration. .

The test gas storage unit 2001 includes a first test gas storage tank 2100 in which the first test gas is stored, a second test gas storage tank 2200 in which the second test gas is stored, and a third test gas in which the third test gas is stored. 3 May include a test gas storage tank (2300). For example, the first test gas, the second test gas, and the third test gas may be different types of gas and may be gases to be detected by the gas detection system 1000.

The comparison gas storage unit (2002) is a part where comparison gas that can be mixed with the test gas is stored in order to control the concentration of the test gas. For example, it is equipped with a comparison gas storage tank (2400) in which nitrogen (N2) gas is stored. It can be.

The comparison gas supply unit 2003 includes a fourth supply line 2410 connected between the comparison gas storage unit 2002 and the gas detection system 1000, and a fourth supply line 2410 at the rear end of the comparison gas storage unit 2002. A first comparison gas supply valve 2412 connected to, a pressure regulator 2413 provided at the front of the first comparison gas supply valve 2412, and a second comparison gas supply valve provided at the rear of the pressure regulator 2413 ( 2414). At this time, the first comparison gas supply valve 2412 may be opened and closed based on the measured value of the pressure gauge 2411 connected to the fourth supply line 2410 at the front of the first comparison gas supply valve 2412. Additionally, the second comparison gas supply valve 2414 may be opened and closed based on the measured value of the pressure regulator 2413.

The test mixed gas generator (2004) is connected between the first test gas storage tank (2100) and the gas detection system (1000), mixes the first test gas and the comparison gas to generate the first test mixed gas, and 1 It is connected between the first supply line (2110) that supplies the test mixed gas to the gas detection system (1000), the second test gas storage tank (2200), and the gas detection system (1000), and the second test gas and comparison gas A second test gas mixture is generated by mixing, and a second supply line (2210) and a third test gas storage tank (2300) and gas detection system (1000) supply the second test mixed gas to the gas detection system (1000). ) is connected between the third test gas and the comparison gas to generate a third test mixed gas, and includes a third supply line 2310 that supplies the third test mixed gas to the gas detection system 1000. You can.

At this time, a first supply valve 2112 and a second supply valve 2114 may be installed in the first supply line 2110, and a third supply valve 2212 and a fourth supply valve may be installed in the second supply line 2210. A valve 2214 may be installed, and a fifth supply valve 2312 and a sixth supply valve 2314 may be installed in the third supply line 2310. Here, the first supply valve 2112 and the second supply valve 2114 may be opened and closed based on values measured by the pressure gauge 2111 and the first flow meter 2113 installed in the first supply line 2110. The third supply valve 2212 and the fourth supply valve 2214 may be opened and closed based on the values measured by the pressure gauge 2211 and the second flow meter 2213 installed in the second supply line 2210, and the fifth supply valve 2212 The supply valve 2312 and the sixth supply valve 2314 may be opened and closed based on values measured by the pressure gauge 2311 and the third flow meter 2313 installed in the third supply line 2310.

In addition, the test mixed gas generator 2004 includes a connection line 2500 connecting the end of the first supply line 2110, the end of the second supply line 2210, and the end of the third supply line 2310, 4 A fourth branch line 2420 branched from the supply line 2410, a first mixing line 2430a connected in parallel with the fourth branch line 2420 and in communication with the first supply line 2110, a fourth branch A second mixing line (2430b) connected in parallel with the line 2420 and in communication with the second supply line 2210, and a first mixing line (2430b) connected in parallel with the fourth branch line 2420 and in communication with the third supply line 2310. 3 A mixing line 2430c may be additionally included. Here, first to third mixing valves 2431a, 2431b, and 2431c may be installed in the first to third mixing lines 2430a, 2430b, and 2430c. The first to third mixing valves 2431a, 2431b, and 2431c may be opened and closed based on the measured value of the fifth flow meter 2421 installed in the fourth branch line 2420.

At this time, a first vent portion that selectively discharges the first test mixed gas may be provided at the end of the first mixing line 2430a. This first vent unit is installed in the front of the first vent valve 2433a and the first vent valve 2433a to be openable and closed in the first mixing line 2430a to measure the pressure of the first mixing line 2430a. It may include a first pressure gauge 2432a.

In addition, the end of the second mixing line (2430b) is provided with a second vent that selectively discharges the second test mixed gas, and the second vent is a second vent that is installed to be openable and closed in the second mixing line (2430b). It may include a second pressure gauge (2432b) installed in front of the valve (2433b) and the second vent valve (2433b) to measure the pressure of the second mixing line (2430b).

In addition, a third vent portion for selectively discharging the first test mixed gas is provided at the end of the third mixing line 2430c, and the third vent portion is installed to be openable and closed in the third mixing line 2430c. It may include a vent valve 2433c and a third pressure gauge 2432c installed in front of the third vent valve 2433c to measure the pressure of the third mixing line 2430c.

By these first to third vent parts, any one of the first test gas, the second test gas, and the third test gas and the comparison gas can be smoothly mixed to form a test mixed gas, and the concentration of the test mixed gas can be adjusted. It can be adjusted to the desired concentration.

Meanwhile, the test mixed gas generator 2004 has a first branch line 2610a branching from the connection line 2500, a second branch line 2610b branching from the connection line 2500, and a branching line 2500. It may additionally include a third branch line 2610c. At this time, first to third branch valves 2611a, 2611b, and 2611c may be installed in the first to third branch lines 2610a, 2610b, and 2610c, respectively. These first to third branch valves (2611a, 2611b, 2611c) measure the measurement value of the fourth flow meter 2510 installed in the connection line 2500 and the measurement value of the fifth flow meter 2421 installed in the fourth branch line 2420. It may be opened or closed based on at least one of the values.

The setting unit 2005 may compare and analyze the detection values of the plurality of test mixed gases supplied to the gas detection system 1000 and the detection values of the comparison gas to preset a two-dimensional image according to the gas concentration. For example, the setting unit 2005 matches a gas having a first concentration with a two-dimensional image having a first contrast, and a gas having a second concentration higher than the first concentration matches a second contrast darker than the first contrast. It can be matched with a two-dimensional image. However, this is only an example for convenience of explanation and does not limit the spirit of the present invention. The method by which the setting unit 2005 matches the gas concentration and the two-dimensional image can be modified in various ways.

Hereinafter, a gas detection system testing method according to an embodiment of the present invention will be described with reference to FIG. 17.

Referring to FIG. 17, the gas detection system test method according to an embodiment of the present invention includes mixing at least a portion of the comparison gas with the test gas to generate a plurality of test mixed gases with different gas concentrations (S10), Step (S20) of detecting a plurality of test mixed gases as a two-dimensional image by supplying the generated plurality of test mixed gases to the gas detection system 1000, supplying the comparison gas to the gas detection system 1000 to convert the comparison gas into a two-dimensional image A step of detecting (S30) and a step of pre-setting a two-dimensional image according to the gas concentration by comparing and analyzing the detection values of the plurality of test mixed gases supplied to the gas detection system 1000 and the detection values of the comparison gas (S40). It can be included.

In the step of generating a plurality of mixed gases for testing (S10), when a plurality of mixed gases for test are generated by mixing a comparative gas with a plurality of mixed gases for test, for example, a gas to be detected by the gas detection system 1000, the plurality of gases generated A step (S20) of supplying the mixed test gas to the gas detection system 1000 and detecting the plurality of test mixed gases as two-dimensional images is performed.

Specifically, a plurality of test mixed gases are flowed through the gas channel 221 of the gas injection module 20, and the plurality of test mixed gases flowing through the gas channel 221 are connected to the ligand compound layer 15 of the gas sensing chip 10. ) should be in regular, continuous, or irregular, repeated contact. Afterwards, two-dimensional parallel light is irradiated to the gas detection chip 10, and two-dimensional images of a plurality of mixed gases for testing are obtained using the light reflected from the gas detection chip 10.

Meanwhile, in order to obtain comparative data on two-dimensional images of a plurality of test mixed gases, a step (S30) of supplying the comparison gas to the gas detection system 1000 and detecting the comparison gas as a two-dimensional image is performed. A comparison gas is flowed through the gas channel 221 of the gas injection module 20, and the comparison gas flowing through the gas channel 221 is regularly and repeatedly contacted with the ligand compound layer 15 of the gas sensing chip 10, or is continuously Contact is made repeatedly or irregularly. Afterwards, two-dimensional parallel light is irradiated to the gas detection chip 10, and a two-dimensional image of the comparison gas is obtained using the light reflected from the gas detection chip 10.

Finally, the detection values of the plurality of test gas mixtures obtained in step S20, e.g., two-dimensional images detected from the plurality of test mixed gases, and the detection values of the comparison gas obtained in step S30, e.g., two-dimensional images detected from the comparison gases. And by comparing and analyzing previously stored data, a two-dimensional image according to gas concentration can be preset.

Although embodiments of the present invention have been described above as specific embodiments, this is merely an example, and the present invention is not limited thereto, and should be construed as having the widest scope following the basic ideas disclosed in this specification. A person skilled in the art may implement a pattern of a shape not specified by combining/substituting the disclosed embodiments, but this also does not depart from the scope of the present invention. In addition, a person skilled in the art can easily change or modify the embodiments disclosed based on the present specification, and it is clear that such changes or modifications also fall within the scope of the present invention.

10, 10a, 10b: gas detection chip 11: substrate
12: Prism 13: Metal layer
14: Metal oxide layer 15, 15a, 15b: Ligand compound layer
20: gas injection module 21: first body
22: second body 100, 100a, 100b: gas detection device
211: gas inlet 212: gas outlet
221: gas channel 222: packing member
200: light source unit 300: light receiving unit
1000: Gas detection system 2000: Gas detection system test device
2001: Test gas storage 2002: Comparison gas storage
2003: Comparison gas supply unit 2004: Test mixed gas generation unit
2005: Setting unit 2100: First test gas storage tank
2110: first supply line 2112: first supply valve
2113: first flow meter 2114: second supply valve
2200: second test gas storage tank 2210: second supply line
2111, 2211, 2411, 2311: Pressure gauge
2212: Third supply valve 2213: Second flow meter
2214: fourth supply valve 2300: third test gas storage tank
2310: Third supply line 2312: Fifth supply valve
2313: Third traveling system 2314: Sixth supply valve
2400: comparative gas storage tank 2410: fourth supply line
2412: first comparison gas supply valve 2413: pressure regulator
2414: Second comparison gas supply valve 2420: Fourth branch line
2421: 5th wandering system 2430a: 1st mixing line
2431a: first mixing valve 2430b: first mixing line
2431b: second mixing valve 2430c: third mixing line
2431c: third mixing valve 2433a: first vent valve
2432a: first pressure gauge 2433b: second vent valve
2432b: second pressure gauge 2433c: third vent valve
2432c: third pressure gauge 2500: connection line
2510: 4th wandering system 2610a: 1st branch line
2610b: second branch line 2610c: third branch line
2611a: first branch valve 2611b: second branch valve
2611c: Third branch valve

Claims (13)

In a device for testing a gas detection system that detects gas as a two-dimensional image,
A test gas storage unit where test gas is stored;
A comparison gas storage unit connected to the test gas storage unit and storing a comparison gas that can be mixed with the test gas;
a comparison gas supply unit connected to the comparison gas storage unit and the gas detection system and supplying the comparison gas to the gas detection system;
It is connected to the test gas storage unit, the comparison gas storage unit, and the gas detection system, and mixes at least a portion of the comparison gas with the test gas to generate a plurality of test mixed gases having different gas concentrations, and a plurality of test gas mixtures. a test mixed gas generator that supplies the test mixed gas to the gas detection system; and
A setting unit that compares and analyzes the detection values of the plurality of test mixed gases supplied to the gas detection system and the detection values of the comparison gas to preset a two-dimensional image according to the gas concentration,
The gas detection system is,
A plurality of the test mixed gases are sequentially injected, or a plurality of test mixed gases sequentially injected into the gas inlet and the gas inlet provided in plural for the comparison gas to be injected flow, or the test mixed gas injected into the gas inlet flows. a gas injection module including a gas channel communicating with the gas inlet to allow comparison gas to flow;
a gas detection chip having a ligand compound layer that is in regular, continuous, or irregular, repeated contact with a plurality of test mixed gases or comparison gases flowing through the gas channel;
a light source unit that radiates two-dimensional parallel light to the gas detection chip; and
A light receiving unit that acquires two-dimensional images of the plurality of mixed gases using light reflected from the gas detection chip,
The test mixed gas generator,
A plurality of supply lines connected to the test gas storage unit and through which the test gas can flow;
a plurality of branch lines connected to the gas inlet and through which the mixed gas for testing can flow; and
It includes a connection line connecting the plurality of supply lines and the plurality of branch lines,
One of the plurality of gas inlets is connected to a supply line connected to the comparison gas storage unit to receive the comparison gas,
The remaining of the plurality of gas inlet ports are respectively connected to a supply line connected to the test gas storage unit through the branch line and the connection line to sequentially receive a plurality of mixed gases for testing,
Gas detection system test device. According to claim 1,
The test gas storage unit,
A first test gas storage tank in which the first test gas is stored;
a second test gas storage tank in which the second test gas is stored; and
Including a third test gas storage tank in which the third test gas is stored,
Gas detection system test device. delete delete delete According to clause 2,
The comparative gas supply unit,
a first comparison gas supply valve connected to a fourth supply line connected between the comparison gas storage unit and the gas detection system at a rear end of the comparison gas storage unit;
a pressure regulator provided in front of the first comparison gas supply valve; and
Including a second comparison gas supply valve provided at the rear of the pressure regulator,
Gas detection system test device. According to clause 6,
The test mixed gas generator,
a fourth branch line branching from the fourth supply line;
A first mixing line connected in parallel with the fourth branch line and in communication with a first supply line connected to the first test gas storage tank;
a second mixing line connected in parallel with the fourth branch line and in communication with a second supply line connected to the second test gas storage tank; and
Further comprising a third mixing line connected in parallel with the fourth branch line and communicating with a third supply line connected to the third test gas storage tank,
Gas detection system test device. According to clause 7,
The test mixed gas generator,
A first flow meter provided in the first supply line;
a second flow meter provided in the second supply line;
A third flow meter provided in the third supply line;
a fourth flow meter provided on the connection line; and
Further comprising a fifth flow meter provided in the fourth branch line,
Gas detection system test device. According to clause 7,
A first vent portion for selectively discharging the first test mixed gas is provided at the end of the first mixing line,
The first vent part,
a first vent valve installed to be openable and closed in the first mixing line; and
Comprising a first pressure gauge installed at the front of the first vent valve to measure the pressure of the first mixing line,
Gas detection system test device. According to clause 7,
A second vent is provided at the end of the second mixing line to selectively discharge the second test mixed gas,
The second vent part,
a second vent valve installed to be openable and closed in the second mixing line; and
Comprising a second pressure gauge installed at the front of the second vent valve to measure the pressure of the second mixing line,
Gas detection system test device. According to clause 7,
A third vent is provided at the end of the third mixing line to selectively discharge the third test mixed gas,
The third vent part,
a third vent valve installed to be openable and closed in the third mixing line; and
Comprising a third pressure gauge installed at the front of the third vent valve to measure the pressure of the third mixing line,
Gas detection system test device. In a method of testing a gas detection system that detects gas as a two-dimensional image using the gas detection system test device according to claim 1,
Mixing at least a portion of the comparison gas with the test gas to create a plurality of test gas mixtures with different gas concentrations;
Supplying the plurality of generated test mixed gases to the gas detection system to detect the plurality of test mixed gases as two-dimensional images;
supplying a comparison gas to the gas detection system and detecting the comparison gas as a two-dimensional image; and
Comprising the step of comparing and analyzing the detection values of the plurality of test mixed gases supplied to the gas detection system and the detection values of the comparison gas to preset a two-dimensional image according to the gas concentration,
Gas Detection System Test Method. According to claim 12,
The plurality of mixed gases for testing are,
A first test gas mixture produced by mixing the first test gas and the comparison gas, a second test gas mixture produced by mixing the second test gas and the comparison gas, and a third test gas produced by mixing the comparison gas. Contains a third test mixed gas,
The first test mixed gas, the second test mixed gas, and the third test mixed gas are sequentially supplied to the gas detection system,
Gas Detection System Test Method.

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