KR20160038314A - System for detecting noxious gas with uncooled type using ip - Google Patents
System for detecting noxious gas with uncooled type using ip Download PDFInfo
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- KR20160038314A KR20160038314A KR1020140130951A KR20140130951A KR20160038314A KR 20160038314 A KR20160038314 A KR 20160038314A KR 1020140130951 A KR1020140130951 A KR 1020140130951A KR 20140130951 A KR20140130951 A KR 20140130951A KR 20160038314 A KR20160038314 A KR 20160038314A
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- South Korea
- Prior art keywords
- infrared
- long wave
- noxious gas
- filter
- gas detection
- Prior art date
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- 239000002341 toxic gas Substances 0.000 title claims abstract description 51
- 239000007789 gas Substances 0.000 claims abstract description 56
- 238000001514 detection method Methods 0.000 claims description 35
- 238000001816 cooling Methods 0.000 claims description 29
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 claims description 12
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 5
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 claims description 4
- OTMSDBZUPAUEDD-UHFFFAOYSA-N Ethane Chemical compound CC OTMSDBZUPAUEDD-UHFFFAOYSA-N 0.000 claims description 4
- 231100001261 hazardous Toxicity 0.000 claims description 4
- 229910000037 hydrogen sulfide Inorganic materials 0.000 claims description 3
- 238000002834 transmittance Methods 0.000 claims description 3
- 230000001473 noxious effect Effects 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 10
- 238000012800 visualization Methods 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 238000002329 infrared spectrum Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000001151 other effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 210000000697 sensory organ Anatomy 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000001931 thermography Methods 0.000 description 1
- 239000012855 volatile organic compound Substances 0.000 description 1
Images
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/48—Thermography; Techniques using wholly visual means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
- G01N21/3504—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for analysing gases, e.g. multi-gas analysis
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N2021/1765—Method using an image detector and processing of image signal
Abstract
The present invention relates to a system for separating and detecting noxious gases.
An uncooled noxious gas classification system using IP according to an embodiment of the present invention includes an infrared filter bank including a plurality of long wave pass filters and a plurality of long wave pass filters, An uncooled infrared camera that acquires information and stores the information in a web server, a step motor that rotates the long wave pass filter, and a camera that acquires a real image of a photographing area of the uncooled infrared camera.
Description
The present invention relates to a system for separating and detecting noxious gases.
There are many kinds of harmful gas in the environment of human surroundings. Due to these harmful gases, explosion, pollution, and pollution occur at home, business, and industrial sites.
Since human sensory organs are very difficult to quantitatively measure the concentration of harmful gas or to identify the kind of harmful gas, harmful gas detection technology using the physical and chemical characteristics of the material has been proposed, Measurement records, alarms and so on.
The conventional method using the gas sensor can detect only whether or not the harmful gas is leaked from the industrial site and if the harmful gas of different kind is to be detected, the accuracy of the detection is significantly lowered.
Conventionally proposed gas detector devices using infrared cameras to detect harmful gas are usually sold at over one hundred million won at a very high price and one infrared gas detector is used to measure the characteristics of one specific infrared wavelength band There is a problem that only the detection of the like gas that is visible is possible.
There is a problem in that an expensive infrared gas detection camera suited to each characteristic must be additionally purchased in order to detect heterogeneous noxious gas showing different infrared wavelength band characteristics by using a gas detector device using a conventional infrared camera.
There is a problem in that the infrared gas detection camera can be used only when the gas detector device using the conventional infrared camera has prior information on the noxious gas at the point where the leakage of the actual noxious gas occurs.
As a representative example of image-based hazardous gas leak visualization inspection equipment for harmful gas leaks, FLIR, a world-leading representative, combines 3.3um and 10.5um hardware bandpass filters to detect VOCs, hydrocarbons and SF6 We have developed and provided a gas visualization system based on cooling type (Cooled Type).
However, the image-based hazardous gas leak visualization inspection equipment is very expensive, such as the purchase price is several hundreds of millions of won, so the adoption in the industrial field is very limited, and the gas visualization equipment based on the cooling type (cooling type) There is a problem in that input costs are incurred to additionally provide the same equipments in order to prepare for the vacancy of the surveillance equipment during the replacement period.
SUMMARY OF THE INVENTION The present invention has been made in order to solve the above problems, and an object of the present invention is to provide a lens and a filter for discriminating noxious gas by using absorption characteristics of noxious gases by infrared wavelength band, We propose a non-cooling type harmful gas detection system that can replace the existing expensive system by visualizing the harmful gas distribution information in the industrial field through precise control of a large number of rotary modules. It is an object of the present invention to provide a system capable of disseminating a possible noxious gas detection solution and confirming noxious gas classification detection information in real time through an external device using IP.
A non-cooling type harmful gas detecting apparatus according to an embodiment of the present invention includes a filter unit including a plurality of long wave pass filters having a passing threshold value based on a transmittance of infrared rays of a harmful gas, And a noxious gas detection unit for detecting a noxious gas based on the infrared thermal image acquired by the infrared thermal image acquisition unit.
According to another aspect of the present invention, there is provided an uncooled noxious gas classification system using IP, comprising: an infrared filter bank including a plurality of long wave pass filters; and a control unit for photographing a thermal image passing through the plurality of long wave pass filters, A step motor for rotating the long wave pass filter, and a camera for acquiring a real image of a photographing area of an uncooled infrared camera, do.
According to the present invention, since the distribution of the noxious gas can be displayed in the actual image, the distribution of the noxious gas can be easily visually confirmed in the industrial site, the safety of the workers in the workplace can be secured There is an effect that can be.
In addition, the present invention replaces the prior art single expensive noxious gas infrared camera and the noxious gas detection system for cooling, which are up to several hundreds of millions of won, and can be easily applied to industrial fields, Is improved.
Further, the present invention can prevent the attenuation of the infra-red light source by mounting the lens and the filter on a single barrel, and can design a barrel of small diameter, .
The effects of the present invention are not limited to those mentioned above, and other effects not mentioned can be clearly understood by those skilled in the art from the following description.
1 is a conceptual diagram showing the reaction of molecules according to an energy source.
Fig. 2 is an infrared spectrum of four kinds of harmful gases (methane, ethane, hydrogen sulfide, benzene).
FIG. 3 is a conceptual view illustrating a noxious gas classification detecting operation according to an embodiment of the present invention.
4 is a view illustrating an example of a noxious gas classification detection system using a bandpass filter according to the related art.
5 is a diagram illustrating a configuration of a non-cooling type noxious gas classification device according to an embodiment of the present invention.
FIG. 6 is a front view of a non-cooling type noxious gas type detecting apparatus according to an embodiment of the present invention.
FIG. 7 is a block diagram illustrating an operation of the non-cooling type harmful gas sensing apparatus according to the embodiment of the present invention.
8 is a block diagram illustrating an operation of the non-cooling type noxious gas classification device using IP according to the embodiment of the present invention.
FIG. 9 and FIG. 10 are perspective views schematically showing an internal structure of a non-cooling type noxious gas classification device according to an embodiment of the present invention.
FIG. 11 is an exemplary view showing the detection of harmful gas using the long wave pass filter applied to the non-cooling type harmful gas detection apparatus according to the embodiment of the present invention.
12 is an exemplary view illustrating intensity of an infrared light source that is drawn in accordance with rotation of a filter of a non-cooling type harmful gas detection device according to an embodiment of the present invention.
FIG. 13 is a diagram illustrating an example of calculating a step motor value of a non-cooling type noxious gas type detection apparatus according to an embodiment of the present invention and a fine control process of a filter unit using the step motor value.
BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention and the manner of achieving them will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the invention to those skilled in the art. And the present invention is defined by the description of the claims. It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. In the present specification, the singular form includes plural forms unless otherwise specified in the specification. It is noted that " comprises, " or "comprising," as used herein, means the presence or absence of one or more other components, steps, operations, and / Do not exclude the addition.
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.
1 is a conceptual diagram showing the reaction of molecules according to an energy source. As shown in FIG. 1, when energy sources such as visible light, infrared light, ultraviolet light, and microwave are scanned on molecules, reaction characteristics of molecules such as separation of molecules, vibration of molecules, and rotation of molecules can be observed.
When infrared rays are applied to molecules, the molecules have differentiated characteristics in a specific infrared wavelength band by absorbing light of a frequency necessary for causing vibration of molecules.
FIG. 2 is a graph showing the results of measurement of four types of noxious gases measured for methane (CH 4 ), ethane (C 2 H 6 ), hydrogen sulfide (H 2 S), and benzene (C 6 H 6 ) FIG. 3 is a conceptual diagram illustrating a harmful gas detection process according to an embodiment of the present invention. As shown in FIG. 3, each harmful gas absorbs infrared energy of a specific wavelength with respect to an infrared wavelength scanned through the background radiation, so that a unique wavelength band in which infrared transmission does not occur exists, The infrared spectral characteristics of each gas can be grasped.
That is, since the harmful gas absorbs a specific wavelength, the infrared-related signal of a specific wavelength is not detected through the thermal imaging camera, so that the harmful gas absorbing a specific wavelength band among the infrared rays radiated from the background has characteristics .
Using the principle of this filter, infrared rays are not detected due to the existence of harmful gas. Therefore, the part where the harmful gas is present is observed as a dark image, and it is possible to visualize the detection of harmful gas Do.
FIG. 5 is a view showing a configuration of a non-cooling type noxious gas classification detecting apparatus according to an embodiment of the present invention, FIG. 6 is a front view of a non-cooling type noxious gas classification detecting apparatus according to an embodiment of the present invention, Is a block diagram showing the operation of the non-cooling type noxious gas classification device according to the embodiment of the present invention.
The apparatus for detecting a noxious gas according to an embodiment of the present invention includes a plurality of long wave pass filters, each of the long wave pass filters includes a filter unit having a passing threshold value based on the infrared ray wavelength band transmittance of the noxious gas, An infrared thermal image acquisition unit for acquiring an infrared thermal image inputted through the filter unit, and a noxious gas detection unit for detecting noxious gas based on the infrared thermal image acquired by the infrared thermal image acquisition unit.
6, a lens barrel including a
FIG. 4 shows an example of a harmful gas detection method using a band pass filter according to the related art. According to the conventional technology, it is expected that only a narrow band of the harmful gas can be detected by using a narrow band pass filter, As a result of the actual test, the narrowband filter has a problem that the intensity of the infrared light source drawn in from the periphery is weakened and the performance is degraded.
In order to solve this problem, according to an embodiment of the present invention, as shown in FIG. 11, a plurality of long wave pass filters are included, and threshold values are set to 7.044um, 8.996um, 8.002um, and 13.570um , It is possible to detect noxious gas of at least one of methane, ethane, hydrogen sulfide, and benzene.
According to the embodiment of the present invention, compared with the case of using a band pass filter, the intensity of the infrared light source to be introduced is relatively large, and thus the imaging performance of the noxious gas is increased.
The filter rotation unit according to the embodiment of the present invention includes a
Accurately positioning the lens barrel (lens and filter) employed for each of the noxious gases at the center of the
12 is an exemplary view illustrating intensity of an infrared light source that is drawn in accordance with rotation of a filter of a non-cooling type harmful gas detection device according to an embodiment of the present invention.
As shown in FIG. 12, there is a difference in the brightness of the infrared light source that is led into the infrared detector according to the position of the barrel arranged to be rotated. That is, in the non-cooling type noxious gas type detecting apparatus according to the embodiment of the present invention, the stepping motor is used to finely rotate the rotary plate to record the step motor value when the intensity of the infrared light source drawn through the barrel is greatest. And stores it. In the case of FIG. 12, the x-axis value (x1) when the intensity of the incoming infrared light source is the y-axis value is recorded and stored as the step motor value.
FIG. 13 is a diagram illustrating an example of calculating a step motor value of a non-cooling type noxious gas type detection apparatus according to an embodiment of the present invention and a fine control process of a filter unit using the step motor value.
In the case of the non-cooling type noxious gas type detecting apparatus according to the embodiment of the present invention in which five barrels are disposed, the intensity value of the infrared light source led into the detector is measured, and at five step points having the maximum value (peak value) It is possible to acquire the step motor value for setting the arrangement of the mirror barrel precisely.
That is, as shown in FIG. 13, when the step points having a peak value of 1000, 2000, 3000, 5000, and 6000 have a total of 7000 steps and the infrared light source to be input has a peak value, Thereby precisely moving and arranging the lens barrel having the long wave path filter and the lens in the infrared ray inlet.
According to the embodiment of the present invention, it is possible to precisely set the position as compared with the case where the user sets manually, and by storing and managing the step position, which is simply calculated mechanically using the infrared light intensity information, It is possible to dispose the lens barrel at the position. This has the effect of enhancing the visualization performance of the infrared-based noxious gas leak image.
8 is a block diagram illustrating an operation of the non-cooling type noxious gas classification device using IP according to the embodiment of the present invention.
The non-cooling type harmful gas detecting apparatus using IP according to the embodiment of the present invention includes an infrared filter bank including a
The
The non-cooled
Accordingly, it is possible to check the unique ID information and the noxious gas detection information in real time through the
The
As described above with reference to FIGS. 12 and 13, the predetermined step motor value is a value for disposing the lens barrel at the step position when the intensity value of the infrared light source drawn in accordance with the position of the barrel is the largest, It is possible to reset by using the intensity information of the infrared light source as feedback information prior to gas detection.
The embodiments of the present invention have been described above. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. Therefore, the disclosed embodiments should be considered in an illustrative rather than a restrictive sense. The scope of the present invention is defined by the appended claims rather than by the foregoing description, and all differences within the scope of equivalents thereof should be construed as being included in the present invention.
10: terminal 100: CCD camera
110: CCD entrance 200: Infrared camera
210: infrared ray inlet 220: infrared camera board
230: Detector 240: Lens
250: filter 300: spindle
410: step motor 420: motor controller
430: Motor power unit 500: Pan / Tilt
610, 620: Ethernet converter 700: IP router
800: Monitoring section
Claims (6)
A filter rotation unit for rotating the long wave path filter;
An infrared thermal image acquisition unit for acquiring infrared thermal image input through the filter unit; And
And a noxious gas detection unit for detecting the noxious gas based on the infrared thermal image acquired by the infrared thermal image acquisition unit
And a non-cooling type harmful gas detection device.
Wherein the filter rotation unit includes a step motor and sets a step motor value by using intensity information of an infrared light source that is inputted to the long wave pass filter by the step motor in accordance with the rotation, Rotating a long wave pass filter
Free type of noxious gas classification detector.
To detect harmful gas of at least one of methane, ethane, hydrogen sulfide and benzene
Free type of noxious gas classification detector.
An uncooled infrared camera capturing a thermal image passing through the plurality of long wave pass filters to acquire noxious gas detection information and storing the noxious gas detection information in a web server;
A step motor for rotationally driving the long wave pass filter; And
A camera for acquiring a real image of a photographing region of the non-cooled infrared camera
And a non-cooling type harmful gas detection system using IP.
The non-cooled infrared camera includes the web server, stores unique ID information and noxious gas detection information in the server, and transmits the unique ID information and the noxious gas detection information to an external device
Uncooled Hazardous Gas Detection System using.
Wherein at least one of the plurality of long wave-path filters is disposed on a front surface of the uncooled infrared camera, wherein the non-cooled infrared camera is rotated by driving the infrared filter bank, And arranging at least one of the plurality of long wave-path filters on the front surface of the uncooled infrared camera using one step motor value
Uncooled Hazardous Gas Detection System using.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020140130951A KR101628811B1 (en) | 2014-09-30 | 2014-09-30 | System for detecting noxious gas with uncooled type using ip |
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| KR1020140130951A KR101628811B1 (en) | 2014-09-30 | 2014-09-30 | System for detecting noxious gas with uncooled type using ip |
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| KR20160038314A true KR20160038314A (en) | 2016-04-07 |
| KR101628811B1 KR101628811B1 (en) | 2016-06-09 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108198171A (en) * | 2017-12-27 | 2018-06-22 | 大连理工大学 | A kind of method of the operating status diagnosis based on server surface Warm status |
| KR20190138250A (en) * | 2018-06-09 | 2019-12-12 | 채령 | The Quantum code block chain of the matrix hash function (the smart greed panel, TTS broadcast system, video-audio broadcasting system in premises, CCTV retaining coded image, generating devices of solar ray, LED streetlamp controlling dimming, solar panel, LED board, controlling apparatus of parking) anti-disaster CCTV and its controlling system |
| KR20190138120A (en) * | 2018-06-04 | 2019-12-12 | 채령 | The Quantum code block chain of the matrix hash function (the smart greed panel, TTS broadcast system, video-audio broadcasting system in premises, CCTV retaining coded image, generating devices of solar ray, LED streetlamp controlling dimming, solar panel, LED board, controlling apparatus of parking) anti-disaster CCTV and its controlling system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108198171A (en) * | 2017-12-27 | 2018-06-22 | 大连理工大学 | A kind of method of the operating status diagnosis based on server surface Warm status |
| KR20190138120A (en) * | 2018-06-04 | 2019-12-12 | 채령 | The Quantum code block chain of the matrix hash function (the smart greed panel, TTS broadcast system, video-audio broadcasting system in premises, CCTV retaining coded image, generating devices of solar ray, LED streetlamp controlling dimming, solar panel, LED board, controlling apparatus of parking) anti-disaster CCTV and its controlling system |
| KR20190138250A (en) * | 2018-06-09 | 2019-12-12 | 채령 | The Quantum code block chain of the matrix hash function (the smart greed panel, TTS broadcast system, video-audio broadcasting system in premises, CCTV retaining coded image, generating devices of solar ray, LED streetlamp controlling dimming, solar panel, LED board, controlling apparatus of parking) anti-disaster CCTV and its controlling system |
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| Publication number | Publication date |
|---|---|
| KR101628811B1 (en) | 2016-06-09 |
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