WO2005015183A1 - 水素ガス及び水素火炎監視方法及び装置 - Google Patents
水素ガス及び水素火炎監視方法及び装置 Download PDFInfo
- Publication number
- WO2005015183A1 WO2005015183A1 PCT/JP2004/008038 JP2004008038W WO2005015183A1 WO 2005015183 A1 WO2005015183 A1 WO 2005015183A1 JP 2004008038 W JP2004008038 W JP 2004008038W WO 2005015183 A1 WO2005015183 A1 WO 2005015183A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- hydrogen
- laser
- hydrogen gas
- image
- laser light
- Prior art date
Links
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 157
- 239000001257 hydrogen Substances 0.000 title claims abstract description 69
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 69
- 238000012544 monitoring process Methods 0.000 title claims abstract description 46
- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000003384 imaging method Methods 0.000 claims abstract description 33
- 230000003287 optical effect Effects 0.000 claims abstract description 24
- 239000007789 gas Substances 0.000 claims description 30
- 238000001069 Raman spectroscopy Methods 0.000 claims description 27
- 238000012806 monitoring device Methods 0.000 claims description 16
- 230000010355 oscillation Effects 0.000 claims description 8
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 5
- 229910052719 titanium Inorganic materials 0.000 claims description 5
- 239000010936 titanium Substances 0.000 claims description 5
- 238000001514 detection method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 238000012545 processing Methods 0.000 description 5
- 230000001678 irradiating effect Effects 0.000 description 4
- 238000001228 spectrum Methods 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000000295 emission spectrum Methods 0.000 description 3
- 230000003595 spectral effect Effects 0.000 description 3
- 230000001360 synchronised effect Effects 0.000 description 3
- 238000012800 visualization Methods 0.000 description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 2
- 230000001939 inductive effect Effects 0.000 description 2
- 230000001443 photoexcitation Effects 0.000 description 2
- RYHBNJHYFVUHQT-UHFFFAOYSA-N 1,4-Dioxane Chemical compound C1COCCO1 RYHBNJHYFVUHQT-UHFFFAOYSA-N 0.000 description 1
- QKLPIYTUUFFRLV-YTEMWHBBSA-N 1,4-bis[(e)-2-(2-methylphenyl)ethenyl]benzene Chemical compound CC1=CC=CC=C1\C=C\C(C=C1)=CC=C1\C=C\C1=CC=CC=C1C QKLPIYTUUFFRLV-YTEMWHBBSA-N 0.000 description 1
- 238000001237 Raman spectrum Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000009965 odorless effect Effects 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
- G01N21/65—Raman scattering
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N5/00—Systems for controlling combustion
- F23N5/24—Preventing development of abnormal or undesired conditions, i.e. safety arrangements
-
- 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
- G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
- G01J3/28—Investigating the spectrum
- G01J3/44—Raman spectrometry; Scattering spectrometry ; Fluorescence spectrometry
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/38—Investigating fluid-tightness of structures by using light
-
- 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
- G01N21/33—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using ultraviolet light
-
- 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
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
- G01N21/65—Raman scattering
- G01N2021/653—Coherent methods [CARS]
Definitions
- the present invention relates to a technology for safely and accurately detecting hydrogen gas leakage and occurrence of a hydrogen flame from a distant place by visualizing hydrogen gas and a hydrogen flame that are invisible to the naked eye, and in more detail.
- TECHNICAL FIELD The present invention relates to a method and an apparatus for monitoring hydrogen gas and hydrogen flame which can be continuously monitored with less erroneous detection for operation of hydrogen gas utilization equipment such as a hydrogen supply station and a fuel cell.
- This gas visualization device uses a laser light source that irradiates an infrared laser with the absorption wavelength of the gas to be measured, uses an image sensor to image the absorption of infrared light reflected from the background by the leaked gas, and creates a two-dimensional visible image. It is to be displayed.
- Patent Document 1 JP-A-6-307967
- Patent Document 2 JP-A-6-288858 Disclosure of the invention
- Hydrogen gas is colorless, 'transparent' and odorless, and in environments where hydrogen gas is used and stored, a stationary flammable gas detector is installed at the location where the gas stays to monitor gas leakage. However, the location of the leak was left to a patrol inspection by a staff member carrying a portable gas detector. For this reason, continuous monitoring technology for detecting gas leaks and specifying leak locations has been required.
- the present invention provides a hydrogen gas and a hydrogen flame that are invisible to the naked eye, and a highly accurate hydrogen gas and hydrogen flame by incorporating a mechanism for eliminating disturbance light. It is an object to provide a method and apparatus for monitoring a hydrogen flame. Means for solving the problem
- the present invention has been made in order to respond to such a strong demand, and a laser light
- This method detects the leakage of hydrogen gas by imaging the spatial intensity distribution of the Raman scattered light, using the Raman scattering phenomenon in which the wavelength of the laser light shifts by the energy corresponding to the absorption energy of the molecule when irradiated. .
- the wavelength of Raman scattering light of hydrogen gas can be changed by changing the wavelength of the irradiation laser light s, and the laser device that can be selected for practical use is limited.
- the wavelength of the laser light source is selected so that the monitoring wavelength of the hydrogen gas is the same as the wavelength of the ultraviolet light emission from the hydrogen flame.
- the time gate for image capture is shortened.
- the influence of sunlight, which is weak in a short time is reduced. Can be minimized.
- the reflected light is handled by narrowing the transmission wavelength of the optical bandpass filter. That is, since the wavelength range of the ultraviolet light to be detected is narrow, it is possible to detect only the hydrogen gas or the ultraviolet light emitted by the flame.
- Fluorescence is handled by using the wavelength corresponding to the anti-Stath Raman scattering wavelength as the monitoring wavelength. That is, since fluorescence always appears at a longer wavelength than the irradiation laser light, the influence of the fluorescence can be minimized by monitoring anti-Stokes light having a shorter wavelength than the laser light. However, the anti-Stokes light is rather weak and is usually difficult to measure. Therefore, a mechanism was created to mix the laser light and the laser light that matches the Raman spectrum wavelength of hydrogen to generate strong, anti-stray Raman scattered light.
- the present invention is the following (1)-(7) hydrogen gas and hydrogen flame monitoring method.
- Detected light with a wavelength of approximately 309 nm caused by two or more different laser beams irradiated onto the monitored space is collected, converted to an electronic image, amplified, and converted back to an optical image to obtain a specific wavelength.
- a method for monitoring hydrogen gas and hydrogen flame characterized by imaging a spatial intensity distribution of a gas.
- the laser light includes a laser light source having one or more wavelengths of about 355 nm, The method for monitoring hydrogen gas and hydrogen flame according to the above (1), which is a laser light source having a wavelength of approximately 416 nm.
- a dye laser, a titanium sapphire laser, an optical parametric oscillation laser, or a hydrogen Raman cell is used as the laser light source having a wavelength of approximately 416 nm. Hydrogen gas and hydrogen flame monitoring method.
- the present invention is a hydrogen gas and hydrogen flame monitoring device of the following (8) to (14).
- An apparatus for monitoring hydrogen gas and hydrogen flame comprising: an imaging means for converting; and an imaging means for spatial intensity distribution of a specific wavelength.
- the hydrogen gas and hydrogen flame monitoring device according to (8), wherein the two or more laser light sources are a laser light source having one or more wavelengths of approximately 355 nm and a laser light source having one or more wavelengths of approximately 416 nm.
- the laser light irradiating means has an image intensifier which irradiates the laser light in a pulse form and further opens and closes the light reception in synchronization with the irradiation light of one laser light.
- the hydrogen gas and hydrogen flame monitoring apparatus according to the above (8) or (9), wherein the condensing is performed only during a time period in which the detected light is emitted.
- the laser light source having a wavelength of about 416 nm is a dye laser, a titanium sapphire laser, an optical parametric oscillation laser, or a hydrogen Raman cell. Hydrogen gas and hydrogen flame monitoring equipment.
- the image forming apparatus further comprising: means for capturing a background image, and means for superimposing the image obtained by the image capturing means and the image of the spatial intensity distribution of the specific wavelength. ) Any of the hydrogen gas and hydrogen flame monitoring devices.
- the hydrogen gas is monitored when the laser beam is irradiated, and the hydrogen flame is monitored when the laser beam is not irradiated. Hydrogen flame monitoring device.
- the present invention since only the ultraviolet light image of the emission of the hydrogen flame and the Raman scattered light of the hydrogen gas are selected and imaged, the colorless and transparent hydrogen flame and hydrogen gas that cannot be seen with the naked eye are recognized. It becomes possible.
- the apparatus of the present invention does not need to switch the observation wavelength, it is possible to make the apparatus configuration compact without having to prepare a plurality of light receiving apparatuses.
- the influence of noise due to disturbance light such as sunlight, reflected light, and fluorescence can be minimized, and high-precision monitoring with less erroneous detection can be performed.
- a laser beam of approximately 355 nm which is the third harmonic of a commonly used Q-switch laser, and a portion of the laser beam of 355 nm are photo-excited and correspond to the Raman shift of hydrogen.
- the wavelength power S of Raman scattered light when the laser light oscillated at a wavelength of approximately 416 nm is simultaneously irradiated on hydrogen gas is completely the same as the peak wavelength 309 nm of the emission spectrum of the OH group in the flame. Focusing on this, the spatial intensity distribution of 309 nm light is imaged to detect hydrogen gas leakage and hydrogen flame.
- FIG. 1 shows an apparatus configuration of the present invention.
- reference numeral 10 denotes a first imaging unit according to the embodiment of the present invention
- reference numeral 20 denotes a laser beam irradiation unit
- reference numeral 30 denotes a second imaging unit
- reference numeral 40 denotes a time synchronization control unit
- Reference numeral 50 indicates image processing means.
- a visible image of the monitored area is photographed using the second imaging means 30, an image of the hydrogen flame or hydrogen gas is photographed by the first imaging means 10, and the image processing means 50 Display two images on top of each other.
- the laser light irradiation means 20 and the first imaging means 10 are operated by the time synchronization control means 40, and the image is imaged by the first imaging means 10 in synchronization with the laser irradiation.
- the hydrogen gas leak monitoring device includes an imaging device 10 as imaging means for gas and flame.
- reference numeral 11 denotes an objective lens as a condensing optical system
- reference numeral 12 denotes an optical bandpass filter as transmission light selection means
- reference numeral 13 denotes an image intensifier as ultraviolet light imaging means
- reference numeral 14 denotes an image sensor.
- the objective lens 11 includes a lens and a lens barrel, and can form an image of an observation target on a photoelectric surface of the image intensifier 13.
- a thin-film photocathode having an external photoelectric effect is provided on the side of the optical bandpass filter 12 of the casing of the image intensifier 13 and the ultraviolet light from the optical bandpass filter 12 emits electrons by the photocathode. Converted to an image. This electron image is converged by an electron lens, multiplied by secondary electrons by a microchannel plate, and returned to an optical image again on the phosphor screen, so that weak stimulated Raman scattering light from hydrogen gas or ultraviolet light from a flame is visible. Converted to an image.
- the visible image of the phosphor screen of the Image Intensifier 13 can be used to electrically capture gas and flame images by using an eyepiece system and an electronic image sensor, and colorless and transparent gas and flame can be monitored. It becomes.
- the hydrogen gas leakage monitoring device includes a laser irradiation unit 20 for inducing Raman scattered light from hydrogen gas.
- Reference numeral 21 denotes the third harmonic (wavelength: approximately 355 nm) laser oscillator of the Q switch YAG
- reference numeral 22 denotes a laser (wavelength: approximately 416 nm) oscillator that oscillates by light excitation at a wavelength of 355 nm
- reference numeral 23 denotes a laser light distributor
- 25 is a mirror for laser-light superposition
- 26 is a lens for expanding the laser beam.
- the 355 nm laser beam emitted from the YAG laser oscillator 21 is a laser beam component.
- the laser light is distributed by the distributor 23, and a part of the laser light is irradiated to the photo-excitation laser oscillation device 22 to oscillate a 416 nm laser.
- the laser light transmitted through the laser distributor 23 is reflected by the mirror 24 and reflected by the mirror 25 for superimposing the laser light, and the laser light of 355 nm and 416 nm is irradiated to the monitored space through the lens 26 for expanding the laser beam. .
- a dye laser As the photoexcitation laser device 22, a dye laser, a titanium sapphire laser, an optical parametric oscillation using a nonlinear optical effect, or a hydrogen Raman cell can be used.
- the wavelengths of the irradiation laser light are 355 nm and 416 nm, and the observation wavelength in this example is 309 ⁇ m, which is shorter than the wavelength of the laser light. Since it appears at a longer wavelength than that, it is possible to prevent the influence of ambient fluorescence on hydrogen gas observation.
- the hydrogen gas leakage monitoring device includes a second imaging device 30 that captures a monitoring target area as a background image.
- Reference numeral 31 denotes an electronic imaging device
- reference numeral 32 denotes an objective lens
- reference numeral 33 denotes a short-wavelength cutoff optical filter.
- the wavelength region to be photographed is set to about 420 nm or more by the short-wavelength cutoff optical filter 33.
- the wavelength selection conditions in the imaging device 30 are at least such that the OH group of the flame, the emission wavelength of 309 nm, which is the Raman scattering wavelength from hydrogen gas, and the wavelength of the irradiation laser light, 355 nm and 416 nm, are not transmitted or insensitive. I have.
- the laser is synchronized with the laser irradiation signal. It is good to take an image during the time when the camera is not illuminated.
- the hydrogen gas leakage monitoring device is a time synchronization device that synchronizes the time between a laser irradiation device 20 for inducing Raman scattered light from hydrogen gas and an imaging device 10 as an imaging means for Raman scattered light of hydrogen gas.
- the control device 40 is provided.
- the time synchronization control device 40 is formed by connecting the above-described imaging device 10 for ultraviolet light with an image intensifier and the laser irradiation device 20 via a cable.
- the voltage applied to the electron lens of the image intensifier 13 is controlled in synchronization with the irradiation of laser light to turn on / off the arrival of electrons to the microchannel plate. By doing so, only the light in the time zone in which the induced Raman scattered light of hydrogen gas caused by the laser is observed is multiplied by the microchannel plate. This ONZOFF gate operation can minimize the influence of disturbance from sunlight, illumination light, or flame.
- the hydrogen gas leakage monitoring device includes an image processing device 50.
- Reference numeral 51 denotes a personal computer having an image processing program
- reference numeral 52 denotes a display monitor.
- the personal computer 51 is connected to the above-mentioned image pickup device 10 for ultraviolet light with an image intensifier, the image pickup device 30 as a background image pickup device, and the time synchronization control device 40 via a cable. .
- the personal computer 51 includes a monitoring control program for performing monitoring control and an image processing program, and is configured by input means such as a keyboard or a mouse.
- the monitoring control program has a function of generating a warning by text and sound when hydrogen gas or flame is detected, or notifying a monitoring office or the like. Further, it may be set so that the supply of the target gas is stopped or the fire prevention processing is performed.
- the image processing program has a function of simultaneously displaying, on one monitor screen 52, an image of the imaging device 10 for ultraviolet light with an image intensifier and an image of the imaging device 30 as background image imaging means.
- the hydrogen flame and hydrogen gas images can be easily recognized, and they can be colored and superimposed and displayed.
- FIG. 2 and FIG. 3 show experimental data supporting the present invention.
- FIG. 2 shows the emission spectrum distribution in the ultraviolet region when hydrogen gas is burned. This In the experiment, the laser irradiation device 20 stops laser oscillation. The light was received during a time period of 1000 microseconds.
- the emission of the hydrogen flame has a peak at 309 nm and is observed with a spectral width of 5 nm.
- the observation time (light reception time) of the emission of the hydrogen flame was shortened, the received signal was weakened, and it was difficult to image in the observation time period of less than 1 microsecond.
- FIG. 3 shows a spectrum when hydrogen gas is observed by irradiating a laser from the laser irradiation device 20.
- a dye laser was used for the optical pumping laser device 22, and the oscillation pulse width of the YAG laser and the dye laser was about 10 nanoseconds.
- BIS-MSB p-bis (o-methylstyryl) benzene
- the light was received in a time zone of 100 nanoseconds after the laser irradiation.
- emission of 309nm is observed when 355nm and 416nm light are irradiated simultaneously (Fig. 3 (a)), and 309nm light is not observed when either laser beam is cut off. (Fig. 3 (b) and (c)).
- the peak wavelength of the Raman scattered light of hydrogen gas and the peak wavelength of the ultraviolet emission of the hydrogen flame are both 309 nm, which are completely the same, the leakage of the hydrogen gas and the generation of the hydrogen flame have an ultraviolet wavelength of 309 nm. It became possible to monitor by light.
- the gas can be monitored by operating the YAG laser 21 of the laser irradiation device 20, and the flame can be monitored by stopping the YAG laser 21. In this way, the gas and flame monitoring modes can be switched simply by oscillating / stopping the YAG laser 21.
- FIG. 1 is a schematic diagram showing a configuration of a leaked gas imaging device 1 according to an embodiment of the present application.
- FIG. 2 is a diagram showing an emission spectrum distribution of a hydrogen flame in an ultraviolet region.
- FIG. 3a Diagram showing the spectrum of Raman scattered light emitted from hydrogen gas (when 355nm and 416nm lasers are irradiated)
- Figure 3b Diagram showing the spectral spectrum of Raman scattered light emitted from hydrogen gas (when only 355 nm laser is irradiated)
- Imaging device that captures the area to be monitored
- continuous monitoring with less erroneous detection can be performed in a hydrogen gas utilization facility such as a hydrogen supply station or a fuel cell. It becomes possible.
Abstract
Description
Claims
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005512901A JP3830050B2 (ja) | 2003-08-08 | 2004-06-09 | 水素ガス及び水素火炎監視方法及び装置 |
EP04745713A EP1653221B1 (en) | 2003-08-08 | 2004-06-09 | Method and device for monitoring hydrogen gas and a hydrogen flame |
AT04745713T ATE507472T1 (de) | 2003-08-08 | 2004-06-09 | Verfahren und vorrichtung zur überwachung von wasserstoffgas und einer wasserstoffflamme |
US10/567,346 US7505126B2 (en) | 2003-08-08 | 2004-06-09 | Method and device for monitoring hydrogen gas and hydrogen flame |
CA2534527A CA2534527C (en) | 2003-08-08 | 2004-06-09 | Method and device for monitoring hydrogen gas and hydrogen flame |
DE602004032443T DE602004032443D1 (de) | 2003-08-08 | 2004-06-09 | Verfahren und vorrichtung zur überwachung von wasserstoffgas und einer wasserstoffflamme |
KR1020067001569A KR101126951B1 (ko) | 2003-08-08 | 2004-06-09 | 수소가스 및 수소화염감시방법 및 장치 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003-290329 | 2003-08-08 | ||
JP2003290329 | 2003-08-08 |
Publications (1)
Publication Number | Publication Date |
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WO2005015183A1 true WO2005015183A1 (ja) | 2005-02-17 |
Family
ID=34131581
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2004/008038 WO2005015183A1 (ja) | 2003-08-08 | 2004-06-09 | 水素ガス及び水素火炎監視方法及び装置 |
Country Status (8)
Country | Link |
---|---|
US (1) | US7505126B2 (ja) |
EP (1) | EP1653221B1 (ja) |
JP (1) | JP3830050B2 (ja) |
KR (1) | KR101126951B1 (ja) |
AT (1) | ATE507472T1 (ja) |
CA (1) | CA2534527C (ja) |
DE (1) | DE602004032443D1 (ja) |
WO (1) | WO2005015183A1 (ja) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2006267097A (ja) * | 2005-02-28 | 2006-10-05 | Shikoku Res Inst Inc | 火炎可視化装置 |
JP2013507634A (ja) * | 2009-10-15 | 2013-03-04 | テクノロジアン・トゥトキムスケスクス・ブイティティー | ラマン放射線の測定 |
JP2015519571A (ja) * | 2012-05-31 | 2015-07-09 | サーモ サイエンティフィック ポータブル アナリティカル インスツルメンツ インコーポレイテッド | X線蛍光およびラマン分光法の組み合わせを利用した試料分析 |
JP2016080349A (ja) * | 2014-10-09 | 2016-05-16 | 株式会社四国総合研究所 | 水素ガス濃度計測装置および方法 |
JP2017003086A (ja) * | 2015-06-15 | 2017-01-05 | Jxエネルギー株式会社 | 水素ステーションのセルフ充填システム |
JP2019002832A (ja) * | 2017-06-16 | 2019-01-10 | 株式会社四国総合研究所 | ガス濃度計測装置および方法 |
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US8941734B2 (en) | 2009-07-23 | 2015-01-27 | International Electronic Machines Corp. | Area monitoring for detection of leaks and/or flames |
ES2727687T3 (es) | 2011-05-12 | 2019-10-17 | Alakai Defense Systems Inc | Dispositivo y método de evitación de riesgo óptico |
US8582105B1 (en) * | 2012-06-14 | 2013-11-12 | Intermolecular, Inc. | Method and apparatus for leak detection in H2Se furnace |
WO2019065828A1 (ja) | 2017-09-29 | 2019-04-04 | 株式会社四国総合研究所 | 物質遠隔特定装置および物質遠隔特定方法 |
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WO2019133373A1 (en) | 2017-12-26 | 2019-07-04 | Dow Global Technologies Llc | Multimodal ethylene-based polymer compositions having improved toughness |
KR102647144B1 (ko) | 2017-12-26 | 2024-03-15 | 다우 글로벌 테크놀로지스 엘엘씨 | 다봉형 에틸렌계 중합체 및 저밀도 폴리에틸렌(ldpe)을 포함하는 조성물 |
SG11202005778VA (en) | 2017-12-26 | 2020-07-29 | Dow Global Technologies Llc | Process for the production of multimodal ethylene-based polymers |
JP7377800B2 (ja) | 2017-12-26 | 2023-11-10 | ダウ グローバル テクノロジーズ エルエルシー | マルチモーダルエチレン系ポリマー加工システムおよび方法 |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS49100997A (ja) * | 1973-01-31 | 1974-09-24 | ||
JPS5910835A (ja) * | 1982-07-09 | 1984-01-20 | Komatsu Ltd | カ−ス分光法を用いた水素濃度定量分析方法 |
JPS59221946A (ja) | 1983-05-31 | 1984-12-13 | Hamamatsu Photonics Kk | 可視光像と併存する紫外線像を観察する装置 |
JPH06288858A (ja) | 1993-03-31 | 1994-10-18 | Osaka Gas Co Ltd | ガスの可視化装置 |
JPH06307967A (ja) | 1993-04-22 | 1994-11-04 | Toshiba Eng Co Ltd | ガス漏洩検知装置 |
JPH09178566A (ja) * | 1995-12-26 | 1997-07-11 | Tokai Carbon Co Ltd | 熱画像表示方法および表示装置 |
US5886344A (en) | 1996-07-28 | 1999-03-23 | Forsyth Electro-Optics, Inc. | Corona detector with narrow-band optical filter |
WO2000055602A1 (en) | 1999-03-17 | 2000-09-21 | University Of Virginia Patent Foundation | Passive remote sensor of chemicals |
JP2002250769A (ja) * | 2001-02-23 | 2002-09-06 | Japan Atom Energy Res Inst | 高速ゲート掃引型3次元レーザーレーダー装置 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4405237A (en) * | 1981-02-04 | 1983-09-20 | The United States Of America As Represented By The Secretary Of The Navy | Coherent anti-Stokes Raman device |
GB2120779B (en) | 1982-03-31 | 1985-10-09 | Komatsu Mfg Co Ltd | Quantitative analysis in accordance with cars |
JP3552858B2 (ja) * | 1996-11-22 | 2004-08-11 | 東京瓦斯株式会社 | 火炎面3次元測定方法およびその装置 |
CA2518491C (en) * | 2003-03-07 | 2011-11-08 | Shikoku Research Institute Incorporated | Gas leakage monitoring method and its system |
-
2004
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- 2004-06-09 AT AT04745713T patent/ATE507472T1/de not_active IP Right Cessation
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- 2004-06-09 KR KR1020067001569A patent/KR101126951B1/ko not_active IP Right Cessation
- 2004-06-09 DE DE602004032443T patent/DE602004032443D1/de active Active
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Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS49100997A (ja) * | 1973-01-31 | 1974-09-24 | ||
JPS5910835A (ja) * | 1982-07-09 | 1984-01-20 | Komatsu Ltd | カ−ス分光法を用いた水素濃度定量分析方法 |
JPS59221946A (ja) | 1983-05-31 | 1984-12-13 | Hamamatsu Photonics Kk | 可視光像と併存する紫外線像を観察する装置 |
JPH06288858A (ja) | 1993-03-31 | 1994-10-18 | Osaka Gas Co Ltd | ガスの可視化装置 |
JPH06307967A (ja) | 1993-04-22 | 1994-11-04 | Toshiba Eng Co Ltd | ガス漏洩検知装置 |
JPH09178566A (ja) * | 1995-12-26 | 1997-07-11 | Tokai Carbon Co Ltd | 熱画像表示方法および表示装置 |
US5886344A (en) | 1996-07-28 | 1999-03-23 | Forsyth Electro-Optics, Inc. | Corona detector with narrow-band optical filter |
WO2000055602A1 (en) | 1999-03-17 | 2000-09-21 | University Of Virginia Patent Foundation | Passive remote sensor of chemicals |
JP2002250769A (ja) * | 2001-02-23 | 2002-09-06 | Japan Atom Energy Res Inst | 高速ゲート掃引型3次元レーザーレーダー装置 |
Non-Patent Citations (2)
Title |
---|
DE GROOT W.A.: "The Use of Spontaneous Raman Scattering for Hydrogen Leak Detection", 30TH AIAA/ASME/SAE/ASEE JOINT PROPULSION CONFERENCE, vol. AIAA-94-2983, 27 June 1994 (1994-06-27) - 29 June 1994 (1994-06-29), pages 1 - 11, XP002980890 * |
MAROWSKY G ET AL., APPL. PHYS. B, vol. 39, 1986, pages 47 - 53 |
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JP2006267097A (ja) * | 2005-02-28 | 2006-10-05 | Shikoku Res Inst Inc | 火炎可視化装置 |
JP2013507634A (ja) * | 2009-10-15 | 2013-03-04 | テクノロジアン・トゥトキムスケスクス・ブイティティー | ラマン放射線の測定 |
US8917388B2 (en) | 2009-10-15 | 2014-12-23 | Teknologian Tutkimuskeskus Vtt | Measurement of raman radiation |
JP2015519571A (ja) * | 2012-05-31 | 2015-07-09 | サーモ サイエンティフィック ポータブル アナリティカル インスツルメンツ インコーポレイテッド | X線蛍光およびラマン分光法の組み合わせを利用した試料分析 |
JP2016080349A (ja) * | 2014-10-09 | 2016-05-16 | 株式会社四国総合研究所 | 水素ガス濃度計測装置および方法 |
JP2017003086A (ja) * | 2015-06-15 | 2017-01-05 | Jxエネルギー株式会社 | 水素ステーションのセルフ充填システム |
JP2019002832A (ja) * | 2017-06-16 | 2019-01-10 | 株式会社四国総合研究所 | ガス濃度計測装置および方法 |
Also Published As
Publication number | Publication date |
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DE602004032443D1 (de) | 2011-06-09 |
EP1653221B1 (en) | 2011-04-27 |
US20080192232A1 (en) | 2008-08-14 |
KR101126951B1 (ko) | 2012-03-20 |
ATE507472T1 (de) | 2011-05-15 |
JPWO2005015183A1 (ja) | 2006-10-05 |
JP3830050B2 (ja) | 2006-10-04 |
US7505126B2 (en) | 2009-03-17 |
CA2534527C (en) | 2013-07-23 |
CA2534527A1 (en) | 2005-02-17 |
EP1653221A4 (en) | 2009-12-30 |
EP1653221A1 (en) | 2006-05-03 |
KR20060034299A (ko) | 2006-04-21 |
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