WO2016163630A1 - Gas concentration sensor for detecting oxygen and carbon dioxide in real time, manufacturing method therefor, and method for detecting composition of gas in packaging container by using same - Google Patents

Gas concentration sensor for detecting oxygen and carbon dioxide in real time, manufacturing method therefor, and method for detecting composition of gas in packaging container by using same Download PDF

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Publication number
WO2016163630A1
WO2016163630A1 PCT/KR2016/000265 KR2016000265W WO2016163630A1 WO 2016163630 A1 WO2016163630 A1 WO 2016163630A1 KR 2016000265 W KR2016000265 W KR 2016000265W WO 2016163630 A1 WO2016163630 A1 WO 2016163630A1
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gas
carbon dioxide
detecting
oxygen
packaging container
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PCT/KR2016/000265
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French (fr)
Korean (ko)
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남성원
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남성원
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D85/00—Containers, packaging elements or packages, specially adapted for particular articles or materials
    • 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
    • G01N27/403—Cells and electrode assemblies
    • G01N27/406—Cells and probes with solid electrolytes
    • G01N27/407—Cells and probes with solid electrolytes for investigating or analysing gases

Definitions

  • the present invention relates to a method for preserving food by detecting a gas composition in a food packaging container through real-time detection of oxygen and carbon dioxide to form an air environment around the food product for storage, and a detection sensor for detecting oxygen and carbon dioxide. It is about.
  • Food damage is caused by the extent of physical damage, pathogen infection (fungus, bacteria), temperature, humidity, atmospheric composition (O2, CO2, N2) and ethylene (Ethylene). The rate is known to be lower than in developing countries.
  • Controlled Atmosphere Packaging CAP, Modified Atmosphere Packaging (MAP)
  • CAP Controlled Atmosphere Packaging
  • MAP Modified Atmosphere Packaging
  • Korean Patent Application No. 10-2004-0044540 discloses an indicator for freshness detection of fresh foods and a method of manufacturing the same, and a solidifying agent is added to an oxidizing agent having a color development or photosensitive ability, and mixed with a porous adsorbent at a predetermined ratio. It is then applied to a common synthetic resin film, woven fabric, nonwoven fabric or paper and dried, and then attached or laminated with a synthetic resin film having micropores formed thereon.
  • the present invention by forming a conductive thin film and oxygen and carbon dioxide gas detection film on the substrate, to provide a thin film-type gas sensor that can simplify the manufacturing process, increase the sensitivity of the sensor and improve the response speed, thereby packing food It is intended to provide a method for quickly detecting changes in gas composition in a vessel.
  • the present invention aims to miniaturize the gas sensor for detecting oxygen and carbon dioxide, and to provide a more sensitive gas detection sensor and a method of detecting gas composition in the container.
  • the electrode pair for applying power to the gas sensing film formed on the substrate A conductive thin film formed on the electrode pair; And a gas sensing film surrounding the conductive thin film, wherein the conductive thin film catalyzes a sensing reaction of the gas sensing film with respect to a gas to be detected, and the gas sensing film is formed of titanium oxide (TiO 4 ), tin oxide ( It provides a gas concentration detection sensor in a packaging container, characterized in that any one selected from the group of semiconductor metal oxide including SnO 2 ) or an alloy thereof.
  • TiO 4 titanium oxide
  • tin oxide It provides a gas concentration detection sensor in a packaging container, characterized in that any one selected from the group of semiconductor metal oxide including SnO 2 ) or an alloy thereof.
  • another embodiment of the present invention in the method for manufacturing the oxygen (O 2) or carbon dioxide (CO 2) gas detection sensor, after the substrate is provided with gold (Au), platinum (Pt), silver ( Depositing a conductive paste pattern including Ag), nickel (Ni), copper (Cu), tungsten (W), aluminum (Al), or an alloy thereof to form an electrode pair for applying power to the gas sensing film; Forming a conductive film on the pair of electrodes; On the formed conductive thin film, any one selected from a group of semiconductor metal oxides including titanium oxide (TiO 4 ), tin oxide (SnO 2 ), or an alloy thereof is used as an oxygen (O 2 ) or carbon dioxide (CO 2 ) gas sensing layer. It provides a method for manufacturing a detection sensor of the gas composition in the packaging container comprising a.
  • the present invention in order to preserve the food by detecting the gas composition in the packaging container in a state suitable for food storage, the gas in the food packaging container through the gas concentration detection sensor for detecting oxygen and carbon dioxide according to claim 1
  • the present invention provides a method for detecting a gas composition in a packaging container, wherein the concentration of the gas container detects the gas composition of oxygen (O 2 ), carbon dioxide (CO 2 ), and nitrogen (N 2 ) gas in real time.
  • the gas concentration in the food packaging container through the gas concentration detection sensor for detecting oxygen and carbon dioxide according to claim 2
  • the present invention provides a method for detecting a gas composition in a packaging container by detecting a gas composition of oxygen (O 2 ), carbon dioxide (CO 2 ) and nitrogen (N 2 ) gas in a packaging container in real time.
  • the present invention by minimizing the change in gas composition in the food packaging container through the thin-film gas sensor for detecting oxygen and carbon dioxide to minimize the food waste problems caused by suggesting an efficient food storage method, food poisoning occurs such as food poisoning It is possible to prevent accidents of human life and to present a standard model of food safety management system.
  • FIG. 1 is a perspective view showing a gas concentration detection sensor for detecting oxygen and carbon dioxide in real time according to the present invention
  • FIG. 2 is a cross-sectional view showing a gas concentration detection sensor for detecting oxygen and carbon dioxide in real time according to the present invention
  • FIG. 3 is a manufacturing process diagram of a gas concentration detection sensor for detecting oxygen and carbon dioxide in real time according to the present invention
  • FIG. 4 is a graph showing response characteristics with time after exposure to oxygen (O 2 ) gas as an example of an oxygen (O 2 ) gas sensor;
  • FIG 5 is a graph showing response characteristics with time after exposure to carbon dioxide (CO 2 ) gas as an example of a carbon dioxide (CO 2 ) gas sensor.
  • the electrode pair for applying power to the gas sensing film formed on the substrate A conductive thin film formed on the electrode pair; And a gas sensing film surrounding the conductive thin film, wherein the conductive thin film catalyzes a sensing reaction of the gas sensing film with respect to a gas to be detected, and the gas sensing film is formed of titanium oxide (TiO 4 ), tin oxide ( It provides a gas concentration detection sensor in a packaging container, characterized in that any one selected from the group of semiconductor metal oxide including SnO 2 ) or an alloy thereof.
  • TiO 4 titanium oxide
  • tin oxide It provides a gas concentration detection sensor in a packaging container, characterized in that any one selected from the group of semiconductor metal oxide including SnO 2 ) or an alloy thereof.
  • FIG. 1 is a perspective view showing a gas concentration detection sensor for detecting oxygen and carbon dioxide real time according to the present invention
  • Figure 2 is a cross-sectional view showing a gas concentration detection sensor for detecting oxygen and carbon dioxide real time according to the present invention
  • Figure 3 is an oxygen according to the present invention and carbon dioxide is also a manufacturing process of real-time detection gas concentration detecting sensor
  • Figure 4 is oxygen (O 2) and then exposed to oxygen (O 2) gas as an embodiment of the gas sensor, and a graph showing the response over time
  • Figure 5 is As an example of the carbon dioxide (CO 2 ) gas sensor, a graph showing a response characteristic with time after exposure to carbon dioxide (CO 2 ) gas.
  • CO 2 carbon dioxide
  • the gas concentration detection sensor in the packaging container through real-time detection of oxygen and carbon dioxide according to the present invention, the substrate (2); An electrode pair 3 for applying power to the gas sensing film formed on the substrate 2; A conductive thin film 4 formed on the electrode pair 3; And a gas sensing film 5 surrounding the conductive thin film 4.
  • the substrate 2 is an insulating substrate such as synthetic resin film, glass, ceramic, silicon substrate, or the like.
  • the electrode pair 3 is disposed on the insulating substrate so as to apply power to the gas sensing film 5 of the substrate 2.
  • the power supply unit for supplying external power to the electrode pair 3 and the measuring device 32 for measuring the electrical characteristics of the gas detection film (5) can be connected.
  • the conductive electrode pair 3 includes, for example, gold (Au), platinum (Pt), silver (Ag), nickel (Ni), copper (Cu), tungsten (W), aluminum (Al) or alloys thereof. It is formed of one or more selected metals from the group. Accordingly, the electrode pair 3 may apply power to the gas sensing film 5 to generate a potential difference in the gas sensing film 5.
  • the electrode pair 3 When a DC voltage is supplied to the electrode pair 3, the electrode pair 3 is an electrode having a relatively positive polarity and a positive polarity.
  • an alternating voltage may be supplied to the electrode pair 3, wherein the electrode pair 3 may be an electrode having a predetermined potential and an electrode holding a ground potential, respectively, and the electrode pair 3 may be provided with a voltage from a power supply. Can be supplied.
  • the measuring instrument 32 may monitor the difference in electrical conductivity of the gas sensing layer 5 to measure electrical characteristics of the gas sensing layer 5.
  • the conductive thin film 4 formed on the electrode pair 3 may increase the response speed and sensitivity of the gas sensor by promoting the decomposition reaction and the coupling reaction of a predetermined gas to be detected.
  • the conductive thin film 4 serves as a catalyst for promoting the detection reaction of the gas detection film with respect to the gas to be detected.
  • the gas sensing film 5 is characterized in that at least one selected from the group of semiconductor metal oxides including titanium oxide (TiO 4 ), tin oxide (SnO 2 ), or an alloy thereof.
  • an embodiment of the present invention provides a method of manufacturing an oxygen or carbon dioxide gas detection sensor, comprising: a step S1 having a substrate 2; A step (S2) of depositing a conductive paste pattern on the substrate (2) to form a pair of electrodes for applying power to a gas sensing film (S2); A third step (S3) of forming a conductive thin film (4) on the electrode pair (3) formed in the second step (S2); At least one selected from the group of semiconductor metal oxides including titanium oxide (TiO 4 ), tin oxide (SnO 2 ), or an alloy thereof is formed on the conductive thin film 4 formed in step S3. It comprises a four step (S4) to form (5).
  • the substrate 2 is prepared with an insulating substrate such as a synthetic film, glass, ceramic, silicon substrate.
  • the conductive paste includes gold (Au), platinum (Pt), silver (Ag), nickel (Ni), copper (Cu), tungsten (W), aluminum (Al) or alloys thereof. One or more metals selected from the group may be applied.
  • the electrode pairs 3 are formed in the form of a plurality of straps parallel to each other, and a conduction path 36 is formed therebetween.
  • the conductive film 4 is formed on the upper surface of the substrate 2 and the upper surface of the electrode pair 3.
  • the conductive film 4 may serve as a catalyst for promoting a sensing reaction of the gas detecting film 5 with respect to a predetermined gas to be detected.
  • the conductive film 4 is arranged so that when the electrons conduct along the conduction path 36 between the electrode pairs 3, the electrons alternately conduct in the gas sensing film 5 and the conductive film 4.
  • the gas sensing film 5 is formed to have a predetermined thickness so that the gas to be detected introduced from the outside is diffused through the gas sensing film 5 to reach the conductive film 4 sufficiently.
  • the gas detection film 5 is characterized in that at least one selected from the group of semiconductor metal oxides including titanium oxide (TiO 4 ), tin oxide (SnO 2 ) or alloys thereof.
  • the gas concentration detection sensor according to another embodiment of the present invention, the detection sensor of the gas composition in the packaging container for detecting oxygen and carbon dioxide gas, the substrate (2); A first adhesive layer of an electrode pair 3 for applying power to the gas sensing film 5 formed on the upper surface of the substrate 2; A second adhesive layer of the conductive thin film 4 formed to completely cover the first adhesive layer; And a gas sensing film 5 for sensing oxygen or carbon dioxide formed on the upper surface of the second adhesive layer.
  • the gas sensing layer 5 is selected from at least one of a semiconductor metal oxide group including titanium oxide (TiO 4 ), tin oxide (SnO 2 ), or an alloy thereof.
  • the conductive thin film 4 formed on the electrode pair 3 may serve as a catalyst for promoting a sensing reaction of the gas sensing film 5 with respect to a predetermined gas to be detected.
  • the conductive thin film 4 is applied with a material capable of catalyzing a predetermined gas sensing film 5.
  • the electrode pair 3 may have a plurality of straps in parallel with each other, and the conductive film 4 may have a gas sensing film (a) when electrons conduct along the conduction path 36 between the pair of electrodes. 5) and conductive film 4 are disposed so as to be alternately conductive.
  • the gas sensing film 5 is formed on the conductive thin film 4.
  • FIG 4 is a graph illustrating an embodiment of an oxygen (O 2 ) gas sensor manufactured by the above-described method.
  • the gas concentration detection sensor in the packaging container according to the present invention is exposed to oxygen gas.
  • Vo described in the response characteristic of the graph is a sensor measurement voltage in air
  • Vg is a sensor measurement voltage when exposed to oxygen
  • reaction sensitivity is measured after exposure to oxygen continuously after the measurement voltage is stabilized in order to measure the possibility of repeated measurement.
  • the oxygen gas sensor according to the present invention is operated at room temperature and exhibits the same level of response even after three repeated exposures of oxygen.
  • FIG 5 is a graph showing an embodiment of a carbon dioxide (CO 2 ) gas sensor manufactured by the above-described method.
  • the gas concentration detection sensor in the packaging container according to the present invention is exposed to carbon dioxide gas.
  • Vo described in the response characteristic of the graph is a sensor measurement voltage in air
  • Vg is a sensor measurement voltage when exposed to carbon dioxide.
  • reaction sensitivity is measured after exposure to carbon dioxide (CO2) continuously after the measurement voltage is stabilized in order to measure the possibility of repeated measurement.
  • the carbon dioxide gas sensor according to the present invention is operated at room temperature and exhibits the same level of response even after three repeated exposures of carbon dioxide.
  • the oxygen concentration in the packaging container by detecting the gas concentration in the food packaging container through a gas concentration detection sensor for detecting oxygen and carbon dioxide in real time. 2 ), it provides a gas composition detection method in the packaging container, characterized in that for detecting the gas composition of carbon dioxide (CO 2 ) and nitrogen (N 2 ) in real time.
  • the gas concentration in the food packaging container through the gas concentration detection sensor for detecting oxygen and carbon dioxide according to claim 2
  • the present invention provides a method for detecting a gas composition in a packaging container by detecting a gas composition of oxygen (O 2 ), carbon dioxide (CO 2 ) and nitrogen (N 2 ) gas in a packaging container in real time.
  • Oxygen and carbon dioxide real-time gas concentration detection sensor for detecting the gas composition in the packaging container is a substrate (2); An electrode pair 3 for applying power to the gas sensing film formed on the substrate 2; A conductive thin film 4 formed on the electrode pair 3; A gas sensing film 5 surrounding the conductive thin film 4 and receiving power from the electrode pair, the gas sensing film including titanium oxide (TiO 4 ), tin oxide (SnO 2 ), or an alloy thereof. It is characterized in that at least one selected from the group of semiconductor metal oxides.
  • the gas concentration detection sensor for real-time detection of oxygen and carbon dioxide for detecting the gas composition in the packaging container is a substrate (2); A first adhesive layer including an electrode pair 3 for applying power to a gas sensing film formed on an upper surface of the substrate 2; A second adhesive layer formed to completely cover the first adhesive layer and including a conductive thin film; A gas sensing film 5 reacting with oxygen or carbon dioxide formed on an upper surface of the second adhesive layer and receiving power by the electrode pair; It is made, including.
  • the present invention relates to a detection sensor that detects oxygen and carbon dioxide, and can be used for food storage.

Abstract

The present invention relates to: a sensor for detecting gas concentration in a packaging container through the real time detection of oxygen and carbon dioxide; a manufacturing method therefor; and a method for detecting the composition of a gas by using the same. A change in the composition of a gas in a foodstuff packaging container is detected in advance through a thin film type gas sensor for detecting oxygen and carbon dioxide, and thus there are effects of minimizing an occurring foodstuff disposal problem by presenting an efficient foodstuff storage method, preventing life-threatening safety accidents, such as food poisoning, to be generated during the preservation of foodstuff, and presenting a standard model of a foodstuff safety management system.

Description

산소와 이산화탄소 실시간 검출용 가스농도 검지센서 및 이의 제조 방법, 그리고 이를 이용한 포장용기 내 가스 조성 검지방법Gas concentration detection sensor for real-time detection of oxygen and carbon dioxide and its manufacturing method, and gas composition detection method in the packaging container using the same
본 발명은 산소와 이산화탄소의 실시간 검출을 통해 식료품 포장 용기 내 가스 조성을 검지하여 식료품 주변의 대기 환경을 보관에 적합한 상태로 조성함으로써 식료품을 보존하는 방법에 관한 것으로, 산소와 이산화탄소를 검출하는 검지 센서에 관한 것이다. The present invention relates to a method for preserving food by detecting a gas composition in a food packaging container through real-time detection of oxygen and carbon dioxide to form an air environment around the food product for storage, and a detection sensor for detecting oxygen and carbon dioxide. It is about.
부패 된 식료품 섭취에 따른 식중독 발생문제와 식료품 유통과정에서 발생하는 식료품의 변질로 인한 식품 폐기물 문제는 여전히 해결해야 할 문제이다.The problem of food poisoning due to corrupt food intake and the food waste problem caused by the deterioration of food products in the food distribution process are still a problem to be solved.
또한, 음식물 쓰레기는 부피가 크고 수분 함량이 많고, 높은 호흡률로 인해 수일의 짧은 기간만 저장 가능하다.In addition, food waste is bulky, high in water content, and can only be stored for a short period of days due to its high respiration rate.
식료품 손상은 물리적 손상 정도, 병원균 감염 (곰팡이, 세균), 온도, 습도, 대기 조성(O2, CO2, N2) 에틸렌 (Ethylene) 등에 의해 유발되며, 관리에 의해 식료품 손상은 조절 가능하여 선진국의 식료품 손상률은 개발도상국에 비해 낮다고 알려져 있다.Food damage is caused by the extent of physical damage, pathogen infection (fungus, bacteria), temperature, humidity, atmospheric composition (O2, CO2, N2) and ethylene (Ethylene). The rate is known to be lower than in developing countries.
식료품의 효율적인 유통 및 저장을 위해서 적절한 가스 농도와 조합을 제공하여 식료품 주변의 대기 환경을 보관에 적합한 상태로 조성함으로써 식료품을 보존하는 방법(Controlled Atmosphere Packaging; CAP, Modified Atmosphere Packaging; MAP)이 사용되고 있으나 식료품 보존 환경을 진단하는 방법은 개발되지 않았다. Controlled Atmosphere Packaging (CAP, Modified Atmosphere Packaging (MAP)) is used to provide an appropriate gas concentration and combination to ensure efficient distribution and storage of food products, thereby creating an atmosphere suitable for storage. No method of diagnosing the food preservation environment has been developed.
대한민국 특허출원 10-2004-0044540호에는 「신선 식품의 선도 감지용 지시계 및 그 제조방법」이 개시되어 있으며, 발색 또는 감광 능력이 있는 산화제에 고형화제를 첨가하고, 이를 다공성 흡착제와 일정비율로 혼합한 후 통상의 합성수지 필름, 직포, 부직포 또는 종이에 도포하여 건조한 다음, 미세기공이 형성된 합성수지 필름을 그 위에 부착 또는 합지하여 구성하는 것과 관련된다. Korean Patent Application No. 10-2004-0044540 discloses an indicator for freshness detection of fresh foods and a method of manufacturing the same, and a solidifying agent is added to an oxidizing agent having a color development or photosensitive ability, and mixed with a porous adsorbent at a predetermined ratio. It is then applied to a common synthetic resin film, woven fabric, nonwoven fabric or paper and dried, and then attached or laminated with a synthetic resin film having micropores formed thereon.
본 발명은, 기판상에 전도성 박막과 산소와 이산화탄소 가스 감지막을 형성함으로써, 제조 공정을 단순화하며 센서의 감도를 높일 수 있으며 응답속도를 빠르게 향상시킬 수 있는 박막형 가스 센서를 제공하고, 이를 통하여 식료품 포장 용기 내 가스 조성의 변화를 신속하게 감지하는 방법을 제공하고자 한다.The present invention, by forming a conductive thin film and oxygen and carbon dioxide gas detection film on the substrate, to provide a thin film-type gas sensor that can simplify the manufacturing process, increase the sensitivity of the sensor and improve the response speed, thereby packing food It is intended to provide a method for quickly detecting changes in gas composition in a vessel.
특히 산소와 이산화탄소 검지용 가스 센서를 소형화하고 보다 고감도의 가스 검지센서 및 이를 통한 용기 내 가스 조성의 검지방법을 제공하고자 한다.In particular, the present invention aims to miniaturize the gas sensor for detecting oxygen and carbon dioxide, and to provide a more sensitive gas detection sensor and a method of detecting gas composition in the container.
본 발명의 일 실시예는, 기판 상에 형성된 가스 감지막에 전원을 인가하는 전극 쌍; 상기 전극 쌍 위에 형성되는 전도성 박막; 상기 전도성 박막을 둘러싸는 가스 감지막을 포함하되, 상기 전도성 박막은 감지 대상 가스에 대한 상기 가스 감지막의 감지 반응을 촉진하는 촉매 작용을 하고, 상기 가스 감지막은 각각 티타늄산화물 (TiO4), 주석산화물 (SnO2) 또는 이들의 합금을 포함하는 반도체금속산화물 그룹에서 선택된 어느 하나인 것을 특징으로 하는 포장용기 내 가스농도 검지센서를 제공한다. One embodiment of the present invention, the electrode pair for applying power to the gas sensing film formed on the substrate; A conductive thin film formed on the electrode pair; And a gas sensing film surrounding the conductive thin film, wherein the conductive thin film catalyzes a sensing reaction of the gas sensing film with respect to a gas to be detected, and the gas sensing film is formed of titanium oxide (TiO 4 ), tin oxide ( It provides a gas concentration detection sensor in a packaging container, characterized in that any one selected from the group of semiconductor metal oxide including SnO 2 ) or an alloy thereof.
한편 상기한 본 발명의 다른 실시예는, 산소(O2) 또는 이산화탄소(CO2) 가스 검지센서를 제조하는 방법에 있어서, 기판을 구비한 후 프린팅 방식으로 금 (Au), 백금 (Pt), 은 (Ag), 니켈 (Ni), 구리 (Cu), 텅스텐(W), 알루미늄(Al) 또는 이들의 합금을 포함한 전도성 페이스트 패턴을 증착하여 가스 감지막에 전원을 인가하는 전극 쌍의 형성하는 단계; 상기 형성된 전극 쌍 위에 전도성 막을 형성하는 단계; 상기 형성된 전도성 박막 위에 티타늄산화물 (TiO4), 주석산화물 (SnO2) 또는 이들의 합금을 포함하는 반도체금속산화물 그룹에서 선택된 어느 하나를 산소(O2) 또는 이산화탄소(CO2) 가스 감지막으로 사용하는 단계;를 포함하는 것을 특징으로 하는 포장 용기 내 가스 조성의 검지센서 제조방법을 제공한다.On the other hand, another embodiment of the present invention, in the method for manufacturing the oxygen (O 2) or carbon dioxide (CO 2) gas detection sensor, after the substrate is provided with gold (Au), platinum (Pt), silver ( Depositing a conductive paste pattern including Ag), nickel (Ni), copper (Cu), tungsten (W), aluminum (Al), or an alloy thereof to form an electrode pair for applying power to the gas sensing film; Forming a conductive film on the pair of electrodes; On the formed conductive thin film, any one selected from a group of semiconductor metal oxides including titanium oxide (TiO 4 ), tin oxide (SnO 2 ), or an alloy thereof is used as an oxygen (O 2 ) or carbon dioxide (CO 2 ) gas sensing layer. It provides a method for manufacturing a detection sensor of the gas composition in the packaging container comprising a.
본 발명의 또다른 실시예는, 식료품 보관에 적합한 상태로 포장용기 내 가스 조성을 검지하여 식료품을 보존하기 위하여, 제 1항에 따른 산소와 이산화탄소 실시간 검출용 가스농도 검지센서를 통해 식료품 포장 용기 내 가스 농도를 검지하여 포장용기 내 산소(O2), 이산화탄소(CO2) 및 질소(N2)가스의 가스 조성을 실시간으로 감지하는 것을 특징으로 하는 포장용기 내 가스 조성 검지방법을 제공한다.Another embodiment of the present invention, in order to preserve the food by detecting the gas composition in the packaging container in a state suitable for food storage, the gas in the food packaging container through the gas concentration detection sensor for detecting oxygen and carbon dioxide according to claim 1 The present invention provides a method for detecting a gas composition in a packaging container, wherein the concentration of the gas container detects the gas composition of oxygen (O 2 ), carbon dioxide (CO 2 ), and nitrogen (N 2 ) gas in real time.
본 발명은 다른 실시예는, 식료품 보관에 적합한 상태로 포장용기 내 가스 조성을 검지하여 식료품을 보존하기 위하여, 제 2항에 따른 산소와 이산화탄소 실시간 검출용 가스농도 검지센서를 통해 식료품 포장 용기 내 가스 농도를 검지하여 포장용기 내 산소(O2), 이산화탄소(CO2) 및 질소(N2)가스의 가스 조성을 실시간으로 감지하는 것을 특징으로 하는 포장용기 내 가스 조성 검지방법을 제공한다.Another embodiment of the present invention, in order to preserve the food by detecting the gas composition in the packaging container in a state suitable for food storage, the gas concentration in the food packaging container through the gas concentration detection sensor for detecting oxygen and carbon dioxide according to claim 2 The present invention provides a method for detecting a gas composition in a packaging container by detecting a gas composition of oxygen (O 2 ), carbon dioxide (CO 2 ) and nitrogen (N 2 ) gas in a packaging container in real time.
본 발명에 따르면, 산소와 이산화탄소 검지용 박막형 가스 센서를 통하여 식료품 포장 용기 내 가스 조성의 변화를 사전에 감지함으로써 효율적인 식료품 저장 방법을 제시하여 발생되는 식료품 폐기 문제를 최소화하고, 식중독 등 식료품 보존상 발생되는 인명 안전사고를 예방할 수 있고, 먹거리 안전 관리 시스템의 표준 모델을 제시할 수 있는 효과가 있다.According to the present invention, by minimizing the change in gas composition in the food packaging container through the thin-film gas sensor for detecting oxygen and carbon dioxide to minimize the food waste problems caused by suggesting an efficient food storage method, food poisoning occurs such as food poisoning It is possible to prevent accidents of human life and to present a standard model of food safety management system.
도 1은 본 발명에 따르는 산소와 이산화탄소 실시간 검출용 가스농도 검지센서를 나타낸 사시도,1 is a perspective view showing a gas concentration detection sensor for detecting oxygen and carbon dioxide in real time according to the present invention,
도 2는 본 발명에 따르는 산소와 이산화탄소 실시간 검출용 가스농도 검지센서를 나타낸 단면도,2 is a cross-sectional view showing a gas concentration detection sensor for detecting oxygen and carbon dioxide in real time according to the present invention;
도 3은 본 발명에 따르는 산소와 이산화탄소 실시간 검출용 가스농도 검지센서의 제조 공정도,3 is a manufacturing process diagram of a gas concentration detection sensor for detecting oxygen and carbon dioxide in real time according to the present invention,
도 4는 산소(O2) 가스 센서의 실시 예로서 산소(O2) 가스에 노출 후, 시간에 따른 응답 특성을 나타낸 그래프,4 is a graph showing response characteristics with time after exposure to oxygen (O 2 ) gas as an example of an oxygen (O 2 ) gas sensor;
도 5는 이산화탄소(CO2) 가스 센서의 실시 예로서 이산화탄소(CO2) 가스에 노출 후, 시간에 따른 응답 특성을 나타낸 그래프.5 is a graph showing response characteristics with time after exposure to carbon dioxide (CO 2 ) gas as an example of a carbon dioxide (CO 2 ) gas sensor.
본 발명의 일 실시예는, 기판 상에 형성된 가스 감지막에 전원을 인가하는 전극 쌍; 상기 전극 쌍 위에 형성되는 전도성 박막; 상기 전도성 박막을 둘러싸는 가스 감지막을 포함하되, 상기 전도성 박막은 감지 대상 가스에 대한 상기 가스 감지막의 감지 반응을 촉진하는 촉매 작용을 하고, 상기 가스 감지막은 각각 티타늄산화물 (TiO4), 주석산화물 (SnO2) 또는 이들의 합금을 포함하는 반도체금속산화물 그룹에서 선택된 어느 하나인 것을 특징으로 하는 포장용기 내 가스농도 검지센서를 제공한다. One embodiment of the present invention, the electrode pair for applying power to the gas sensing film formed on the substrate; A conductive thin film formed on the electrode pair; And a gas sensing film surrounding the conductive thin film, wherein the conductive thin film catalyzes a sensing reaction of the gas sensing film with respect to a gas to be detected, and the gas sensing film is formed of titanium oxide (TiO 4 ), tin oxide ( It provides a gas concentration detection sensor in a packaging container, characterized in that any one selected from the group of semiconductor metal oxide including SnO 2 ) or an alloy thereof.
이하 본 발명의 바람직한 실시예를 첨부된 도면을 토대로 상세하게 설명하면 다음과 같다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.
이에 앞서, 후술하는 용어들은 본 발명에서의 기능을 고려하여 정의된 것으로서, 이는 본 발명의 기술적 사상에 부합하는 개념과 당해 기술분야에서 통용 또는 통상적으로 인식되는 의미로 해석되어야 함을 명시한다.Prior to this, the following terms are defined in consideration of the functions in the present invention, which specifies that the concept should be construed as a concept consistent with the technical spirit of the present invention and commonly understood or commonly recognized in the art.
또한, 본 발명과 관련된 공지기능 혹은 구성에 대한 구체적인 설명이 본 발명의 요지를 흐릴 수 있다고 판단되는 경우 그 상세한 설명은 생략한다.In addition, when it is determined that the detailed description of known functions or configurations related to the present invention may obscure the gist of the present invention, the detailed description thereof will be omitted.
여기서, 첨부된 도면들은 기술의 구성 및 작용에 대한 설명과 이해의 편의 및 명확성을 위해 일부분을 과장하거나 간략화하여 도시한 것으로서, 각 구성요소가 실제의 크기와 정확하게 일치하는 것은 아니다.Here, the accompanying drawings show an exaggerated or simplified part of the description and description for the convenience and clarity of the construction and operation of the technology, and each component does not exactly match the actual size.
도 1은 본 발명에 따르는 산소와 이산화탄소 실시간 검출용 가스농도 검지센서를 나타낸 사시도, 도 2은 본 발명에 따르는 산소와 이산화탄소 실시간 검출용 가스농도 검지센서를 나타낸 단면도, 도 3은 본 발명에 따르는 산소와 이산화탄소 실시간 검출용 가스농도 검지센서의 제조 공정도, 도 4는 산소(O2) 가스 센서의 실시 예로서 산소(O2) 가스에 노출 후, 시간에 따른 응답 특성을 나타낸 그래프, 도 5는 이산화탄소(CO2) 가스 센서의 실시 예로서 이산화탄소(CO2) 가스에 노출 후, 시간에 따른 응답 특성을 나타낸 그래프이다. 1 is a perspective view showing a gas concentration detection sensor for detecting oxygen and carbon dioxide real time according to the present invention, Figure 2 is a cross-sectional view showing a gas concentration detection sensor for detecting oxygen and carbon dioxide real time according to the present invention, Figure 3 is an oxygen according to the present invention and carbon dioxide is also a manufacturing process of real-time detection gas concentration detecting sensor, Figure 4 is oxygen (O 2) and then exposed to oxygen (O 2) gas as an embodiment of the gas sensor, and a graph showing the response over time, Figure 5 is As an example of the carbon dioxide (CO 2 ) gas sensor, a graph showing a response characteristic with time after exposure to carbon dioxide (CO 2 ) gas.
도 1에 도시된 바와 같이, 본 발명에 따르는 산소와 이산화탄소 실시간 검출을 통한 포장용기 내 가스농도 검지센서는, 기판(2); 기판(2) 상에 형성된 가스 감지막에 전원을 인가하는 전극 쌍(3); 상기 전극 쌍(3) 위에 형성되는 전도성 박막(4); 상기 전도성 박막(4)을 둘러싸는 가스 감지막(5)을 포함하여 구성된다. As shown in Figure 1, the gas concentration detection sensor in the packaging container through real-time detection of oxygen and carbon dioxide according to the present invention, the substrate (2); An electrode pair 3 for applying power to the gas sensing film formed on the substrate 2; A conductive thin film 4 formed on the electrode pair 3; And a gas sensing film 5 surrounding the conductive thin film 4.
기판(2)은 합성수지 필름, 유리, 세라믹, 실리콘 기판 등과 같은 절연 기판이다. The substrate 2 is an insulating substrate such as synthetic resin film, glass, ceramic, silicon substrate, or the like.
전극 쌍(3)은 기판(2)의 가스 감지막(5)에 전원을 인가하도록 절연 기판 상에 배치된다. The electrode pair 3 is disposed on the insulating substrate so as to apply power to the gas sensing film 5 of the substrate 2.
또한 상기 전극 쌍(3)에 외부 전원을 공급하는 전원 공급부 및 가스 감지막(5)의 전기적 특성을 측정하는 계측기(32)가 연결될 수 있다. In addition, the power supply unit for supplying external power to the electrode pair 3 and the measuring device 32 for measuring the electrical characteristics of the gas detection film (5) can be connected.
전도성 전극 쌍(3)은 일례로서, 금 (Au), 백금 (Pt), 은 (Ag), 니켈 (Ni), 구리 (Cu), 텅스텐(W), 알루미늄(Al) 또는 이들의 합금을 포함한 그룹에서 일 이상 선택된 금속으로 형성된다. 따라서 전극 쌍(3)은 가스 감지막(5)에 전원을 인가하여 가스 감지막(5)에 전위차를 발생시킬 수 있다. The conductive electrode pair 3 includes, for example, gold (Au), platinum (Pt), silver (Ag), nickel (Ni), copper (Cu), tungsten (W), aluminum (Al) or alloys thereof. It is formed of one or more selected metals from the group. Accordingly, the electrode pair 3 may apply power to the gas sensing film 5 to generate a potential difference in the gas sensing film 5.
전극 쌍(3)에 직류 전압이 공급되는 경우, 전극 쌍(3)은 상대적으로 양극 및 음극의 극성을 띠는 전극이다. 또한 전극 쌍(3)에 교류 전압이 공급될 수 있으며, 이때 전극 쌍(3)은 각각 소정의 전위를 가지는 전극 및 그라운드 전위를 유지하는 전극일 수 있으며, 전극 쌍(3)은 전원 공급부로부터 전압을 공급 받을 수 있다. When a DC voltage is supplied to the electrode pair 3, the electrode pair 3 is an electrode having a relatively positive polarity and a positive polarity. In addition, an alternating voltage may be supplied to the electrode pair 3, wherein the electrode pair 3 may be an electrode having a predetermined potential and an electrode holding a ground potential, respectively, and the electrode pair 3 may be provided with a voltage from a power supply. Can be supplied.
계측기(32)는 가스 감지막(5)의 전기전도도 차이를 모니터링하여 가스 감지막(5)의 전기적 특성을 측정할 수 있다.The measuring instrument 32 may monitor the difference in electrical conductivity of the gas sensing layer 5 to measure electrical characteristics of the gas sensing layer 5.
전극 쌍(3) 위에 형성되는 전도성 박막(4)은 소정의 감지 대상 가스의 분해반응과 결합반응을 촉진시킴으로써 가스센서의 응답속도 및 감도를 증가시킬 수 있다.The conductive thin film 4 formed on the electrode pair 3 may increase the response speed and sensitivity of the gas sensor by promoting the decomposition reaction and the coupling reaction of a predetermined gas to be detected.
상기 전도성 박막(4)은 감지 대상 가스에 대한 상기 가스 감지막의 감지 반응을 촉진하는 촉매 작용을 한다. 상기 가스 감지막(5)은 각각 티타늄산화물 (TiO4), 주석산화물 (SnO2) 또는 이들의 합금을 포함하는 반도체금속산화물 그룹에서 일 이상 선택되는 것을 특징으로 한다. The conductive thin film 4 serves as a catalyst for promoting the detection reaction of the gas detection film with respect to the gas to be detected. The gas sensing film 5 is characterized in that at least one selected from the group of semiconductor metal oxides including titanium oxide (TiO 4 ), tin oxide (SnO 2 ), or an alloy thereof.
상기에서는 가스 감지막(5)으로서 일례로 들어 설명하였지만, 상술한 바와 유사한 방식으로 전기전도도가 변화하는 다른 다양한 종류의 물질들을 가스 감지막(5)으로 적용할 수도 있다. Although the above has been described as an example of the gas sensing film 5, other various kinds of materials whose electrical conductivity changes in a manner similar to the above may be applied to the gas sensing film 5.
한편 도 3에 도시된 바와 같이, 본 발명의 실시예는, 산소 또는 이산화탄소 가스 검지센서를 제조하는 방법에 있어서, 기판(2)을 구비하는 1단계(S1); 상기 기판(2)에 프린팅 방식으로 전도성 페이스트 패턴을 증착하여 가스 감지막에 전원을 인가하는 전극 쌍의 형성하는 2단계(S2); 상기 2단계(S2)에서 형성된 전극 쌍(3) 위에 전도성 박막(4)을 형성하는 3단계(S3); 상기 3단계(S3)에서 형성된 전도성 박막(4) 위에 티타늄산화물 (TiO4), 주석산화물 (SnO2) 또는 이들의 합금을 포함하는 반도체금속산화물 그룹에서 일 이상 선택되는 것으로 이를 도포하여 가스 감지막(5)을 형성하는 4단계(S4);를 포함하여 구성된다.Meanwhile, as shown in FIG. 3, an embodiment of the present invention provides a method of manufacturing an oxygen or carbon dioxide gas detection sensor, comprising: a step S1 having a substrate 2; A step (S2) of depositing a conductive paste pattern on the substrate (2) to form a pair of electrodes for applying power to a gas sensing film (S2); A third step (S3) of forming a conductive thin film (4) on the electrode pair (3) formed in the second step (S2); At least one selected from the group of semiconductor metal oxides including titanium oxide (TiO 4 ), tin oxide (SnO 2 ), or an alloy thereof is formed on the conductive thin film 4 formed in step S3. It comprises a four step (S4) to form (5).
1단계(S1)에서 기판(2)은 합성수지 필름, 유리, 세라믹, 실리콘 기판 등과 같은 절연 기판이 준비된다. In the first step (S1), the substrate 2 is prepared with an insulating substrate such as a synthetic film, glass, ceramic, silicon substrate.
상기 2단계(S2)에서 전도성 페이스트는 금 (Au), 백금 (Pt), 은 (Ag), 니켈 (Ni), 구리 (Cu), 텅스텐(W), 알루미늄(Al) 또는 이들의 합금을 포함한 그룹에서 일 이상 선택된 금속이 적용될 수 있다.In the second step (S2), the conductive paste includes gold (Au), platinum (Pt), silver (Ag), nickel (Ni), copper (Cu), tungsten (W), aluminum (Al) or alloys thereof. One or more metals selected from the group may be applied.
전극 쌍(3)은 서로 평행한 복수개의 스트랩(strap) 형태로 형성되고, 그 사이에 전도길(conduction path)(36)이 형성된다. The electrode pairs 3 are formed in the form of a plurality of straps parallel to each other, and a conduction path 36 is formed therebetween.
상기 3단계(S3)에서, 기판(2)의 상면 및 전극 쌍(3)의 상면에 전도성 막(4)이 형성된다. 전도성 막(4)은 소정의 감지 대상 가스에 대한 상기 가스 감지막(5)의 감지 반응을 촉진하는 촉매 작용을 할 수 있다.In the third step S3, the conductive film 4 is formed on the upper surface of the substrate 2 and the upper surface of the electrode pair 3. The conductive film 4 may serve as a catalyst for promoting a sensing reaction of the gas detecting film 5 with respect to a predetermined gas to be detected.
전도성 막(4)은 전극 쌍(3) 사이에서 전도길(36)을 따라 전자가 전도할 때, 전자가 가스 감지막(5)과 전도성 막(4)에서 번갈아 가며 전도할 수 있도록 배치된다.The conductive film 4 is arranged so that when the electrons conduct along the conduction path 36 between the electrode pairs 3, the electrons alternately conduct in the gas sensing film 5 and the conductive film 4.
상기 4단계에서, 가스 감지막(5)은 외부로부터 도입되는 감지 대상 가스가 가스 감지막(5)을 통과하여 확산하여 전도성 막(4)에 충분히 도달될 수 있도록 일정 두께로 형성된다. In the fourth step, the gas sensing film 5 is formed to have a predetermined thickness so that the gas to be detected introduced from the outside is diffused through the gas sensing film 5 to reach the conductive film 4 sufficiently.
가스 감지막(5)은, 티타늄산화물 (TiO4), 주석산화물 (SnO2) 또는 이들의 합금을 포함하는 반도체금속산화물 그룹에서 일 이상 선택되는 것을 특징으로 한다. The gas detection film 5 is characterized in that at least one selected from the group of semiconductor metal oxides including titanium oxide (TiO 4 ), tin oxide (SnO 2 ) or alloys thereof.
한편 본 발명의 다른 실시예에 따른 가스농도 검지센서는, 산소와 이산화탄소 가스를 검출하는 포장 용기 내 가스 조성의 검지센서에 있어서, 기판(2); 상기 기판(2)의 상면에 형성된 가스 감지막(5)에 전원을 인가하는 전극 쌍(3)의 제1접착층; 상기 제1접착층을 완전히 덮도록 형성된 전도성 박막(4)의 제2접착층; 상기 제2접착층 상면에 형성된 산소 또는 이산화탄소를 감지하는 가스 감지막(5);을 포함하여 구성된다. On the other hand, the gas concentration detection sensor according to another embodiment of the present invention, the detection sensor of the gas composition in the packaging container for detecting oxygen and carbon dioxide gas, the substrate (2); A first adhesive layer of an electrode pair 3 for applying power to the gas sensing film 5 formed on the upper surface of the substrate 2; A second adhesive layer of the conductive thin film 4 formed to completely cover the first adhesive layer; And a gas sensing film 5 for sensing oxygen or carbon dioxide formed on the upper surface of the second adhesive layer.
상기 가스 감지막(5)은 티타늄산화물 (TiO4), 주석산화물 (SnO2) 또는 이들의 합금을 포함하는 반도체금속산화물 그룹에서 일 이상 선택되어진다. The gas sensing layer 5 is selected from at least one of a semiconductor metal oxide group including titanium oxide (TiO 4 ), tin oxide (SnO 2 ), or an alloy thereof.
전극 쌍(3) 위에 형성되는 전도성 박막(4)은 소정의 감지 대상 가스에 대한 상기 가스 감지막(5)의 감지 반응을 촉진하는 촉매 작용을 할 수 있다.The conductive thin film 4 formed on the electrode pair 3 may serve as a catalyst for promoting a sensing reaction of the gas sensing film 5 with respect to a predetermined gas to be detected.
전도성 박막(4)은 소정의 가스 감지막(5)에 대해 촉매 작용을 할 수 있는 물질이 적용된다. The conductive thin film 4 is applied with a material capable of catalyzing a predetermined gas sensing film 5.
전극 쌍(3)은 서로 평행한 복수개의 스트랩(strap) 형태를 가질 수 있으며, 전도성 막(4)은 전극 쌍 사이에서 전도길(36)을 따라 전자가 전도할 때, 전자가 가스 감지막(5)과 전도성 막(4)에서 번갈아 가며 전도할 수 있도록 배치된다.The electrode pair 3 may have a plurality of straps in parallel with each other, and the conductive film 4 may have a gas sensing film (a) when electrons conduct along the conduction path 36 between the pair of electrodes. 5) and conductive film 4 are disposed so as to be alternately conductive.
전도성 박막(4) 상에서 상기 검지가스의 분해 반응과 결합 반응을 촉진시킴으로써 가스 센서의 응답속도 및 감도를 증가시킬 수 있다. By promoting the decomposition reaction and the coupling reaction of the detection gas on the conductive thin film 4 can increase the response speed and sensitivity of the gas sensor.
가스 감지막(5)은 전도성 박막(4) 상에 형성된다.The gas sensing film 5 is formed on the conductive thin film 4.
한편 도 4는 상술한 방법으로 제조된 산소(O2) 가스 센서의 실시예를 나타낸 그래프이다. 4 is a graph illustrating an embodiment of an oxygen (O 2 ) gas sensor manufactured by the above-described method.
본 발명에 따른 포장용기 내 가스농도 검지센서를 산소 가스에 노출시킨다.The gas concentration detection sensor in the packaging container according to the present invention is exposed to oxygen gas.
이후 시간에 따른 반응 감도에 대한 응답특성을 검출한다.Thereafter, the response characteristics of the response sensitivity with time are detected.
그래프의 응답 특성에 기재된 Vo 는 공기중에서의 센서측정전압이고, Vg는 산소에 노출되었을 때의 센서측정전압이다.Vo described in the response characteristic of the graph is a sensor measurement voltage in air, and Vg is a sensor measurement voltage when exposed to oxygen.
특히 산소에 노출 후, 반복적 측정 가능성을 측정하기 위하여 측정 전압이 안정화된 후에 연속적으로 산소에 노출 이후, 반응 감도를 측정한다. In particular, after exposure to oxygen, the reaction sensitivity is measured after exposure to oxygen continuously after the measurement voltage is stabilized in order to measure the possibility of repeated measurement.
본 발명에 의한 산소 가스 센서는 상온에서 동작되고 3회의 반복적인 산소의 노출에도 동일한 수준의 응답 특성을 나타낸다. The oxygen gas sensor according to the present invention is operated at room temperature and exhibits the same level of response even after three repeated exposures of oxygen.
한편 도 5는 상술한 방법으로 제조된 이산화탄소(CO2) 가스 센서의 실시예를 나타낸 그래프이다. 5 is a graph showing an embodiment of a carbon dioxide (CO 2 ) gas sensor manufactured by the above-described method.
본 발명에 따른 포장용기 내 가스농도 검지센서를 이산화탄소 가스에 노출 시킨다.The gas concentration detection sensor in the packaging container according to the present invention is exposed to carbon dioxide gas.
이후 시간에 따른 반응 감도로 표시되는 이산화탄소에 대한 응답 특성을 검출한다. Thereafter, the response characteristics of the carbon dioxide expressed by the reaction sensitivity with time are detected.
그래프의 응답 특성에 기재된 Vo 는 공기중에서의 센서측정전압이고, Vg는 이산화탄소에 노출되었을 때의 센서측정전압이다. Vo described in the response characteristic of the graph is a sensor measurement voltage in air, and Vg is a sensor measurement voltage when exposed to carbon dioxide.
특히 이산화탄소에 노출 후, 반복적 측정 가능성을 측정하기 위하여 측정 전압이 안정화된 후에 연속적으로 이산화탄소(CO2)에 노출 이후, 반응 감도를 측정한다. In particular, after exposure to carbon dioxide, the reaction sensitivity is measured after exposure to carbon dioxide (CO2) continuously after the measurement voltage is stabilized in order to measure the possibility of repeated measurement.
본 발명에 의한 이산화탄소 가스 센서는 상온에서 동작되고 3회의 반복적인 이산화탄소의 노출에도 동일한 수준의 응답 특성을 나타낸다. The carbon dioxide gas sensor according to the present invention is operated at room temperature and exhibits the same level of response even after three repeated exposures of carbon dioxide.
본 발명에 따른 식료품 보관에 적합한 상태로 포장용기 내 가스 조성을 검지하여 식료품을 보존하기 위하여, 산소와 이산화탄소 실시간 검출용 가스농도 검지센서를 통해 식료품 포장 용기 내 가스 농도를 검지하여 포장용기 내 산소(O2), 이산화탄소(CO2) 및 질소(N2)가스의 가스 조성을 실시간으로 감지하는 것을 특징으로 하는 포장용기 내 가스 조성 검지방법을 제공한다.In order to preserve the foodstuff by detecting the gas composition in the packaging container in a state suitable for food storage according to the present invention, the oxygen concentration in the packaging container by detecting the gas concentration in the food packaging container through a gas concentration detection sensor for detecting oxygen and carbon dioxide in real time. 2 ), it provides a gas composition detection method in the packaging container, characterized in that for detecting the gas composition of carbon dioxide (CO 2 ) and nitrogen (N 2 ) in real time.
본 발명은 다른 실시예는, 식료품 보관에 적합한 상태로 포장용기 내 가스 조성을 검지하여 식료품을 보존하기 위하여, 제 2항에 따른 산소와 이산화탄소 실시간 검출용 가스농도 검지센서를 통해 식료품 포장 용기 내 가스 농도를 검지하여 포장용기 내 산소(O2), 이산화탄소(CO2) 및 질소(N2)가스의 가스 조성을 실시간으로 감지하는 것을 특징으로 하는 포장용기 내 가스 조성 검지방법을 제공한다.Another embodiment of the present invention, in order to preserve the food by detecting the gas composition in the packaging container in a state suitable for food storage, the gas concentration in the food packaging container through the gas concentration detection sensor for detecting oxygen and carbon dioxide according to claim 2 The present invention provides a method for detecting a gas composition in a packaging container by detecting a gas composition of oxygen (O 2 ), carbon dioxide (CO 2 ) and nitrogen (N 2 ) gas in a packaging container in real time.
상기 포장용기 내 가스 조성을 검지하기 위한 산소와 이산화탄소 실시간 검출용 가스농도 검지센서는 기판(2); 기판(2) 상에 형성된 가스 감지막에 전원을 인가하는 전극 쌍(3); 상기 전극 쌍(3) 위에 형성되는 전도성 박막(4); 상기 전도성 박막(4)을 둘러싸며 상기 전극 쌍으로부터 전원을 인가 받는 가스 감지막(5)을 포함하고, 상기 가스 감지막은 티타늄산화물 (TiO4), 주석산화물 (SnO2) 또는 이들의 합금을 포함하는 반도체금속산화물 그룹에서 일 이상 선택되는 것을 특징으로 한다. Oxygen and carbon dioxide real-time gas concentration detection sensor for detecting the gas composition in the packaging container is a substrate (2); An electrode pair 3 for applying power to the gas sensing film formed on the substrate 2; A conductive thin film 4 formed on the electrode pair 3; A gas sensing film 5 surrounding the conductive thin film 4 and receiving power from the electrode pair, the gas sensing film including titanium oxide (TiO 4 ), tin oxide (SnO 2 ), or an alloy thereof. It is characterized in that at least one selected from the group of semiconductor metal oxides.
또한, 상기 포장용기 내 가스 조성을 검지하기 위한 산소와 이산화탄소 실시간 검출용 가스농도 검지센서는 기판(2); 상기 기판(2)의 상면에 형성된 가스 감지막에 전원을 인가하는 전극 쌍(3)을 포함하는 제1접착층; 상기 제1접착층을 완전히 덮도록 형성되며 전도성 박막을 포함하는 제2접착층; 상기 제2접착층 상면에 형성된 산소 또는 이산화탄소에 반응하며 상기 전극 쌍에 의해 전원이 인가되는 가스 감지막(5); 을 포함하여 이루어진다. In addition, the gas concentration detection sensor for real-time detection of oxygen and carbon dioxide for detecting the gas composition in the packaging container is a substrate (2); A first adhesive layer including an electrode pair 3 for applying power to a gas sensing film formed on an upper surface of the substrate 2; A second adhesive layer formed to completely cover the first adhesive layer and including a conductive thin film; A gas sensing film 5 reacting with oxygen or carbon dioxide formed on an upper surface of the second adhesive layer and receiving power by the electrode pair; It is made, including.
한편, 본 발명은 상술한 실시 예 및 첨부된 도면에 의해 한정되는 것이 아니고, 본 발명의 기술적 사상을 벗어나지 않는 범위 안에서 예시되지 않은 여러 가지 변형과 응용이 가능함은 물론 구성요소의 치환 및 균등한 타실시 예로 변경할 수 있으므로 본 발명의 특징에 대한 변형과 응용에 관계된 내용은 본 발명의 범위 내에 포함되는 것으로 해석되어야 할 것이다.On the other hand, the present invention is not limited to the above-described embodiment and the accompanying drawings, various modifications and applications that are not illustrated within the scope not departing from the technical spirit of the present invention, as well as the substitution of components and equivalent threading As the examples may be changed, the contents related to the modification and application of the features of the present invention should be interpreted as being included in the scope of the present invention.
본 발명은 산소와 이산화탄소를 검출하는 검지 센서에 관한 것으로 식료품의 보존에 이용가능하다.The present invention relates to a detection sensor that detects oxygen and carbon dioxide, and can be used for food storage.

Claims (7)

  1. 기판;Board;
    기판 상에 형성된 가스 감지막에 전원을 인가하는 전극 쌍; An electrode pair for applying power to the gas sensing film formed on the substrate;
    상기 전극 쌍 위에 형성되며, 감지 대상 가스에 대한 상기 가스 감지막의 감지 반응을 촉진하는 촉매 작용을 하는 전도성 박막; A conductive thin film formed on the electrode pair and catalyzing a sensing reaction of the gas sensing film with respect to a gas to be detected;
    상기 전도성 박막을 둘러싸며 상기 전극 쌍으로부터 전원을 인가 받는 가스 감지막을 포함하고, A gas sensing film surrounding the conductive thin film and receiving power from the electrode pair;
    상기 가스 감지막은 티타늄산화물 (TiO4), 주석산화물 (SnO2) 또는 이들의 합금을 포함하는 반도체금속산화물 그룹에서 일 이상 선택되는 것을 특징으로 하는 산소와 이산화탄소 실시간 검출용 가스농도 검지센서. The gas detecting film is a gas concentration detection sensor for real-time detection of oxygen and carbon dioxide, characterized in that at least one selected from the group of semiconductor metal oxides including titanium oxide (TiO 4 ), tin oxide (SnO 2 ) or their alloys.
  2. 기판; Board;
    상기 기판의 상면에 형성된 가스 감지막에 전원을 인가하는 전극 쌍을 포함하는 제1접착층; A first adhesive layer including an electrode pair for applying power to a gas sensing film formed on an upper surface of the substrate;
    상기 제1접착층을 완전히 덮도록 형성되며 전도성 박막을 포함하는 제2접착층; A second adhesive layer formed to completely cover the first adhesive layer and including a conductive thin film;
    상기 제2접착층 상면에 형성된 산소 또는 이산화탄소에 반응하며 상기 전극 쌍에 의해 전원이 인가되는 가스 감지막;A gas sensing film reacting with oxygen or carbon dioxide formed on an upper surface of the second adhesive layer and supplied with power by the electrode pair;
    을 포함하는 것을 특징으로 하는 산소와 이산화탄소 실시간 검출용 가스농도 검지센서. Gas concentration detection sensor for real-time detection of oxygen and carbon dioxide comprising a.
  3. 제 1항 또는 제 2항에 있어서,The method according to claim 1 or 2,
    상기 전도성 전극 쌍은, 금(Au), 백금(Pt), 은(Ag), 니켈(Ni), 구리(Cu), 텅스텐(W), 알루미늄(Al) 또는 이들의 합금을 포함한 그룹에서 일 이상 선택된 금속으로 된 전도성 페이스트로 형성되는 것으로, 일측에 계측기가 연결되는 것을 특징으로 하는 산소와 이산화탄소 실시간 검출용 가스농도 검지센서.The pair of conductive electrodes is one or more in the group including gold (Au), platinum (Pt), silver (Ag), nickel (Ni), copper (Cu), tungsten (W), aluminum (Al) or alloys thereof. The gas concentration detection sensor for detecting oxygen and carbon dioxide in real time, characterized in that formed of a conductive paste of the selected metal, the measuring instrument is connected to one side.
  4. 제 2항에 있어서,The method of claim 2,
    상기 가스 감지막은 티타늄산화물(TiO4), 주석산화물(SnO2) 또는 이들의 합금을 포함하는 반도체금속산화물 그룹에서 일 이상 선택되는 것을 특징으로 하는 산소와 이산화탄소 실시간 검출용 가스농도 검지센서. The gas detection film is a gas concentration detection sensor for real-time detection of oxygen and carbon dioxide, characterized in that at least one selected from the group of semiconductor metal oxides including titanium oxide (TiO 4 ), tin oxide (SnO 2 ) or their alloys.
  5. 기판을 구비하는 1단계; Step 1 having a substrate;
    상기 기판에 프린팅 방식으로 전도성 페이스트 패턴을 증착하여 가스 감지막에 전원을 인가하는 전극 쌍의 형성하는 2단계; Forming a pair of electrodes for applying power to a gas sensing film by depositing a conductive paste pattern on the substrate by a printing method;
    상기 2단계에서 형성된 전극 쌍 위에 전도성 박막을 형성하는 3단계; Forming a conductive thin film on the electrode pair formed in the second step;
    상기 3단계에서 형성된 전도성 박막 위에 티타늄산화물, 주석산화물 또는 이들의 합금을 포함하는 반도체금속산화물 그룹에서 일 이상 선택되는 것으로 이를 도포하여 가스 감지막을 형성하는 4단계;Step 4 to form a gas-sensing film by applying at least one selected from the group of semiconductor metal oxides including titanium oxide, tin oxide or alloys thereof on the conductive thin film formed in the third step;
    를 포함하는 것을 특징으로 하는 산소와 이산화탄소 실시간 검출용 가스농도 검지센서의 제조방법.Method of manufacturing a gas concentration detection sensor for detecting oxygen and carbon dioxide in real time comprising a.
  6. 식료품 보관에 적합한 상태로 포장용기 내 가스 조성을 검지하여 식료품을 보존하기 위하여, 제 1항에 따른 산소와 이산화탄소 실시간 검출용 가스농도 검지센서를 통해 식료품 포장 용기 내 가스 농도를 검지하여 포장용기 내 산소(O2), 이산화탄소(CO2) 및 질소(N2)가스의 가스 조성을 실시간으로 감지하는 것을 특징으로 하는 포장용기 내 가스 조성 검지방법.In order to preserve the food by detecting the gas composition in the packaging container in a state suitable for food storage, the gas concentration in the food packaging container is detected by the gas concentration detection sensor for detecting oxygen and carbon dioxide in real time according to claim 1 O 2 ), the gas composition detection method in a packaging container, characterized in that for detecting the gas composition of carbon dioxide (CO 2 ) and nitrogen (N 2 ) in real time.
  7. 식료품 보관에 적합한 상태로 포장용기 내 가스 조성을 검지하여 식료품을 보존하기 위하여, 제 2항에 따른 산소와 이산화탄소 실시간 검출용 가스농도 검지센서를 통해 식료품 포장 용기 내 가스 농도를 검지하여 포장용기 내 산소(O2), 이산화탄소(CO2) 및 질소(N2)가스의 가스 조성을 실시간으로 감지하는 것을 특징으로 하는 포장용기 내 가스 조성 검지방법.In order to preserve the food by detecting the gas composition in the packaging container in a state suitable for food storage, the gas concentration in the food packaging container is detected by the gas concentration detection sensor for detecting oxygen and carbon dioxide in real time according to claim 2 O 2 ), the gas composition detection method in a packaging container, characterized in that for detecting the gas composition of carbon dioxide (CO 2 ) and nitrogen (N 2 ) in real time.
PCT/KR2016/000265 2015-04-08 2016-01-12 Gas concentration sensor for detecting oxygen and carbon dioxide in real time, manufacturing method therefor, and method for detecting composition of gas in packaging container by using same WO2016163630A1 (en)

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