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WO2021199796A1 - Système de mesure et procédé de mesure - Google Patents

Système de mesure et procédé de mesure Download PDF

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Publication number
WO2021199796A1
WO2021199796A1 PCT/JP2021/006713 JP2021006713W WO2021199796A1 WO 2021199796 A1 WO2021199796 A1 WO 2021199796A1 JP 2021006713 W JP2021006713 W JP 2021006713W WO 2021199796 A1 WO2021199796 A1 WO 2021199796A1
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WO
WIPO (PCT)
Prior art keywords
light
intensity
pressure
target surface
irradiation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2021/006713
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English (en)
Japanese (ja)
Inventor
佑 松田
哲 片山
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Waseda University
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Waseda University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Waseda University filed Critical Waseda University
Priority to JP2022511660A priority Critical patent/JPWO2021199796A1/ja
Publication of WO2021199796A1 publication Critical patent/WO2021199796A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K11/00—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00
    • G01K11/12—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using changes in colour, translucency or reflectance
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L1/00—Measuring force or stress, in general

Definitions

  • the present invention relates to a system and a method for measuring the pressure and temperature of an object surface using a pressure-sensitive paint or a temperature-sensitive paint, and more specifically, removing the influence of ambient light to make the object surface more accurate.
  • the present invention relates to a measurement system and a measurement method for measuring pressure and temperature.
  • a pressure measuring method using a pressure-sensitive paint (PSP: Pressure-Sensitive Paint) is known when measuring the pressure distribution on the surface of an object such as the wing surface of an aircraft. ing.
  • the pressure-sensitive paint here is excited by blue excitation light from ultraviolet rays to generate light emission from blue to red fluorescence or phosphorescence, and the more the air or the like in contact with the coated surface becomes high pressure and the oxygen concentration increases, the stronger the light emission intensity. Has the property of decreasing. Therefore, in the pressure measurement method using the pressure-sensitive paint, as conceptually shown in FIG.
  • the target surface F of the object to which the pressure-sensitive paint is applied is irradiated with the excitation light L1 from the excitation light source 51, and the CCD
  • an image pickup device 52 such as a camera and detecting the intensity distribution in the space due to the light emitted L2 from the pressure-sensitive paint
  • TSP Temperature-Sensitive Paint
  • the present invention has been devised by paying attention to such inconveniences, and an object of the present invention is to measure the pressure and temperature of the surface of an object by using a pressure-sensitive paint or a temperature-sensitive paint. It is an object of the present invention to provide a measurement system and a measurement method capable of measuring pressure and temperature with higher accuracy by removing the influence.
  • the present invention mainly uses a pressure-sensitive paint to measure the pressure acting on the target surface of an object, and / or uses a temperature-sensitive paint to measure the temperature of the target surface.
  • the excitation light irradiation means for irradiating the target surface coated with the pressure-sensitive paint or the temperature-sensitive paint
  • the light intensity detection for detecting the intensity of the light generated in the vicinity of the target surface.
  • the means and the pressure / temperature deriving means for deriving the pressure and temperature based on the detection result by the light intensity detecting means are provided, and the excitation light irradiating means is the excitation light when the target surface is irradiated.
  • the excitation light can be irradiated by a plurality of irradiation patterns in which the spatial intensity distribution of the above changes at different timings.
  • the components that are not synchronized with each irradiation pattern are specified as the ambient light intensity due to the ambient light excluding the light emitted by the pressure-sensitive paint or the temperature-sensitive paint, and the ambient light intensity is removed from the detection result of the light intensity detecting means.
  • the light emission intensity of the pressure-sensitive paint or the temperature-sensitive paint in the target surface is specified, and the measured value of the pressure or temperature is obtained from the relationship between the light emission intensity and the pressure or temperature stored in advance. It has a structure of asking.
  • the present invention applies a pressure-sensitive paint or a temperature-sensitive paint to the target surface of an object, irradiates the target surface with a predetermined excitation light, and detects the emission intensity of the pressure-sensitive paint or the temperature-sensitive paint.
  • the target surface is irradiated with the excitation light by a plurality of irradiation patterns in which the spatial intensity distribution of the excitation light changes at different timings.
  • the intensity of light generated in the vicinity of is detected for each irradiation pattern, and by comparing the detection results, the components that are not synchronized with each irradiation pattern are generated by ambient light excluding the light emitted by the pressure-sensitive paint or the temperature-sensitive paint.
  • the emission intensity of the pressure-sensitive paint or the temperature-sensitive paint in the target surface is specified, and the emission intensity is set to a preset value.
  • a method is adopted in which the measured value of the pressure or temperature is obtained from the relationship with the pressure or temperature.
  • the target surface is irradiated with the excitation light at different timings by a plurality of irradiation patterns in which the spatial intensity distribution of the excitation light in the target surface is non-uniform, and the excitation light is generated in the vicinity of the target surface in each irradiation pattern.
  • the ambient light intensity is specified by extracting components that are not synchronized with each irradiation pattern. Then, by removing the ambient light intensity from the detection result of the light intensity generated in the vicinity of the target surface, the light emission intensity of only the pressure-sensitive paint or the temperature-sensitive paint on the target surface is specified.
  • FIG. 1 It is a schematic block diagram of the pressure measurement system which concerns on this embodiment.
  • (A) is a conceptual diagram showing the irradiation state of the excitation light on the target surface in the first irradiation pattern
  • (B) is a concept showing the irradiation state of the excitation light on the target surface in the second irradiation pattern.
  • (C) is a graph showing the relationship between the excitation light intensity and the position in the first irradiation pattern
  • (D) is a graph showing the relationship between the excitation light intensity and the position in the second irradiation pattern.
  • Yes is a graph partially showing the relationship between the intensity and the position detected by the light intensity detecting means in the first and second irradiation patterns.
  • FIG. 1 shows a schematic configuration diagram of a pressure measurement system (measurement system) according to this embodiment.
  • the pressure measuring system 10 is a system for measuring the pressure of each part in the target surface F of an object coated with a pressure-sensitive paint, and is an excitation light irradiation means for irradiating the target surface F with excitation light.
  • 11 and a light intensity detecting means 12 for detecting the intensity of light generated in the vicinity of the target surface F, and a pressure deriving means for deriving a pressure acting on the target surface F based on the detection results of the light intensity detecting means 12. It is equipped with 13.
  • the pressure-sensitive paint applicable to the present invention is not particularly limited, and includes a luminescent dye that fluoresces or phosphoresces (hereinafter, collectively referred to as "light emission") by excitation light of a predetermined wavelength, and the coated surface thereof.
  • a luminescent dye that fluoresces or phosphoresces hereinafter, collectively referred to as "light emission"
  • Any gas having the property of changing the emission intensity from the luminescent dye may be used as long as it has the property of changing the emission intensity from the luminescent dye according to the concentration of oxygen molecules in the gas that comes into contact with.
  • the pressure-sensitive paint used in the present invention a known pressure-sensitive paint whose emission intensity decreases as the oxygen concentration in contact increases is used, and the pressure of the gas containing oxygen and the oxygen concentration are in a proportional relationship. Therefore, as the pressure of air or the like acting on the target surface increases, the emission intensity decreases.
  • the excitation light irradiation means 11 is configured to change the spatial intensity distribution, which is the spatial intensity distribution of the excitation light when the target surface F is irradiated, at different timings.
  • the excitation light irradiation means 11 includes a known excitation light source 15 that generates excitation light that excites a luminescent dye in a pressure-sensitive paint such as a xenon lamp, an LED, and a blue laser, and excitation light from the excitation light source 15 to the target surface F. It is provided with an irradiation adjusting unit 16 that adjusts the irradiation so that the irradiation can be performed in a plurality of patterns.
  • the irradiation adjusting unit 16 is configured to include a digital micromirror device (DMD) using a micromirror surface or the like, a known filter, or the like, and is a space when the excitation light generated by the excitation light source 15 is applied to the target surface F.
  • DMD digital micromirror device
  • the irradiation of the excitation light can be adjusted by a plurality of irradiation patterns that change the intensity distribution at different timings. That is, in the irradiation adjusting unit 16, a plurality of irradiation patterns are set so that the intensity of the excitation light in the target surface F is partially different, and the spatial intensity distribution of the excitation light is not the same at different timings. As a result, the target surface F is irradiated with excitation light.
  • the irradiation of the excitation light is blocked at least once and the irradiation of the excitation light is allowed at least once for each part in the target surface F (or a minute region that divides the target surface F).
  • Multiple types are prepared to do so. For example, as shown in FIGS. 2 (A) and 2 (B), a plurality of irradiation patterns including an irradiation pattern in which the target surface F is irradiated with excitation light in a vertical stripe pattern and regions that are mutually bright and dark are shifted. Is prepared.
  • the light intensity detecting means 12 includes an image pickup device such as a CCD camera or CMOS that images the vicinity of the target surface, and an image pickup element, and the light intensity can be detected for each part of the target surface F from the image pickup result. ..
  • the light intensity detected here is a value obtained by adding the emission intensity corresponding to the light emission by the pressure-sensitive paint to the disturbance light intensity corresponding to various ambient light including the light from the outside.
  • the pressure deriving means 13 is composed of a computer, and has a storage unit 19 that stores the detection result of the light intensity detecting means 12 and a disturbance light intensity specifying that specifies the disturbance light intensity due to the disturbance light excluding the light emitted by the pressure-sensitive paint.
  • the light emission intensity specifying part 21 that specifies the light emission intensity by the pressure-sensitive paint in the target surface F by removing the disturbance light intensity from the detection result of the light intensity detection means 12 and the light emission intensity that is stored in advance. It is provided with a pressure specifying unit 22 for obtaining a measured value of pressure from the relationship between light and pressure.
  • the light intensity measured in No. 12 is temporarily stored.
  • a component that is not synchronized with each irradiation pattern is specified as an disturbance light intensity by comparing the detection results of the light intensity detecting means 12 in each irradiation pattern. That is, here, the detection result of the light intensity detecting means 12 at the time of the irradiation pattern in which the irradiation of the excitation light is blocked at each portion of the target surface F is specified as the ambient light intensity that is not synchronized with each irradiation pattern.
  • the procedure for specifying the disturbance light intensity in the disturbance light intensity specifying unit 20 is illustrated below.
  • the portion A in the target surface F irradiated with the excitation light at a predetermined time is not partially irradiated with the excitation light, and the corresponding excitation light (C) is shown in FIG.
  • the excitation light intensity becomes zero.
  • the second irradiation pattern of the figure (B) as shown in the corresponding figure (D)
  • the excitation light intensity does not become zero at the portion A. Therefore, the light intensity of the portion A measured by the light intensity detecting means 12 in the first irradiation pattern does not include the emission intensity at the portion A, and the ambient light is composed of only the components of the other ambient light. It becomes strength.
  • the detection result of the portion A is obtained in each irradiation pattern. It is specified as an unsynchronized disturbance light intensity C1.
  • the disturbance light intensity specifying unit 20 identifies each portion in the target surface F from the detection result of the light intensity detecting means 12 at the time of another irradiation pattern in which irradiation of excitation light is permitted.
  • the emission intensity can be obtained by subtracting the ambient light intensity of the same portion.
  • the procedure for specifying the light emission intensity in the light emission intensity specifying unit 21 is illustrated below.
  • the relational expression between the emission intensity and the pressure set by the initial calibration work is stored in advance, and the pressure is obtained from the emission intensity for each part by using the relational expression.
  • the relational expression is set for each excitation light intensity, and when the emission intensity is determined by an irradiation pattern that allows irradiation of excitation light at each site, the corresponding relational expression is obtained from the excitation light intensity in the irradiation pattern. Is used. That is, in the above-mentioned example, the relational expression in the excitation light intensity C3 of the portion A in the second pattern shown in FIG. 2D is used, thereby specifying the pressure corresponding to the emission intensity C2.
  • the pressure distribution of the target surface F to which the pressure-sensitive paint is applied can be obtained by the following procedure.
  • the excitation light irradiation means 11 irradiates the target surface F coated with the pressure-sensitive paint with excitation light by a plurality of irradiation patterns in which the spatial intensity distribution of the excitation light changes at different timings.
  • the light intensity detecting means 12 detects the intensity of the light generated in the vicinity of the target surface F for each irradiation pattern.
  • the disturbance light intensity specifying unit 20 of the pressure deriving means 13 compares the detection results of each detection result of the light intensity detecting means 12, and the components that are not synchronized with each irradiation pattern are the disturbance caused by the disturbance light excluding the light emission by the pressure-sensitive paint. Specified as light intensity.
  • the emission intensity specifying unit 21 specifies the emission intensity of the pressure-sensitive paint in the target surface F by subtracting the ambient light intensity from the detection result of the light intensity detecting means 12.
  • the pressure specifying unit 22 obtains a measured value of the pressure at each site from the relationship between the emission intensity and the pressure set in advance, and obtains the pressure distribution in the target surface F.
  • the pressure measuring system 10 for measuring the pressure of the target surface F by the pressure-sensitive paint and the pressure distribution in the plane has been illustrated and described, but the present invention is not limited to this, and the temperature-sensitive paint is applied.
  • the same configuration and method as in the above embodiment can be applied to the measurement system for measuring the temperature and its distribution of the target surface F and its surrounding space. That is, in this temperature measurement system, the paint applied to the target surface F is changed from the pressure-sensitive paint to the temperature-sensitive paint for the pressure measurement system 10, and the relational expression between the emission intensity by the temperature-sensitive paint and the temperature is set.
  • the measurement target can be changed from pressure to temperature by using a configuration that is substantially the same. Therefore, the pressure deriving means 13 and the pressure specifying unit 22 function as a temperature deriving means and a temperature specifying unit for performing temperature measurement using the temperature-sensitive paint in the temperature measuring system.
  • the paint (luminous paint) to be applied to the target surface F a paint in which a pressure-sensitive paint and a temperature-sensitive paint are mixed is applied, and the target surface F is subjected to a measurement system that integrates the pressure measurement system and the temperature measurement system. Pressure and temperature can also be measured. This enables more accurate measurement while correcting the above-mentioned error of pressure measurement due to the influence of the temperature distribution, for example.
  • each part of the device in the present invention is not limited to the illustrated configuration example, and various changes can be made as long as substantially the same operation is achieved.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Fluid Pressure (AREA)

Abstract

La présente invention concerne un système de mesure 10 qui comprend : un moyen d'irradiation de lumière d'excitation 11 qui irradie une surface F d'intérêt, sur laquelle est appliqué un matériau de revêtement sensible à la pression ou un matériau de revêtement sensible à la température, avec une lumière d'excitation ; un moyen de détection d'intensité lumineuse 12 qui détecte l'intensité de lumière générée à proximité de la surface F d'intérêt ; et un moyen de dérivation 13 qui dérive la pression ou la température sur la base du résultat de détection par le moyen de détection d'intensité de lumière 12. Le moyen d'irradiation de lumière d'excitation 11 est configuré de façon à pouvoir irradier une lumière d'excitation dans une pluralité de motifs d'irradiation, où la distribution d'intensité spatiale de la lumière d'excitation lorsque la surface F d'intérêt est irradiée change à différents moments. À l'aide du moyen de dérivation 13, selon une comparaison des intensités lumineuses détectées par le moyen de détection d'intensité lumineuse 12 dans les motifs d'irradiation respectifs, un composant qui n'est pas synchronisé avec les motifs d'irradiation est spécifié comme étant l'intensité de lumière ambiante de la lumière ambiante autre que la lumière émise produite par le matériau de revêtement sensible à la pression ou le matériau de revêtement sensible à la température, et l'intensité de lumière ambiante est exclue du résultat de détection de l'intensité lumineuse, de sorte que l'intensité de la lumière émise produite par le matériau de revêtement sensible à la pression ou le matériau de revêtement sensible à la température dans la surface F d'intérêt est spécifiée, et une valeur mesurée de la pression ou de la température est déduite.
PCT/JP2021/006713 2020-04-02 2021-02-23 Système de mesure et procédé de mesure Ceased WO2021199796A1 (fr)

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JP2020066985 2020-04-02

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Cited By (2)

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Publication number Priority date Publication date Assignee Title
CN113444655A (zh) * 2020-03-26 2021-09-28 吉林中粮生化有限公司 谷氨酸棒状杆菌、高谷氨酸产量的温度敏感型菌株及其获得方法、应用以及谷氨酸发酵方法
CN114459728A (zh) * 2022-04-13 2022-05-10 中国空气动力研究与发展中心高速空气动力研究所 一种低温温敏漆转捩测量试验方法

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US5817945A (en) * 1996-04-15 1998-10-06 Mcdonnell Douglas System and method of determining strain
JP2006064600A (ja) * 2004-08-27 2006-03-09 Japan Aerospace Exploration Agency Ａ−ｐｒｉｏｒｉ／Ｉｎ−ｓｉｔｕＨｙｂｒｉｄ感圧塗料データ処理手法
JP2020190431A (ja) * 2019-05-20 2020-11-26 株式会社島津製作所 応力発光データ処理装置、応力発光データ処理方法、応力発光測定装置および応力発光試験システム

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US5817945A (en) * 1996-04-15 1998-10-06 Mcdonnell Douglas System and method of determining strain
JP2006064600A (ja) * 2004-08-27 2006-03-09 Japan Aerospace Exploration Agency Ａ−ｐｒｉｏｒｉ／Ｉｎ−ｓｉｔｕＨｙｂｒｉｄ感圧塗料データ処理手法
JP2020190431A (ja) * 2019-05-20 2020-11-26 株式会社島津製作所 応力発光データ処理装置、応力発光データ処理方法、応力発光測定装置および応力発光試験システム

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113444655A (zh) * 2020-03-26 2021-09-28 吉林中粮生化有限公司 谷氨酸棒状杆菌、高谷氨酸产量的温度敏感型菌株及其获得方法、应用以及谷氨酸发酵方法
CN113444655B (zh) * 2020-03-26 2023-05-16 吉林中粮生化有限公司 谷氨酸棒状杆菌、高谷氨酸产量的温度敏感型菌株及其获得方法、应用以及谷氨酸发酵方法
CN114459728A (zh) * 2022-04-13 2022-05-10 中国空气动力研究与发展中心高速空气动力研究所 一种低温温敏漆转捩测量试验方法
CN114459728B (zh) * 2022-04-13 2022-06-24 中国空气动力研究与发展中心高速空气动力研究所 一种低温温敏漆转捩测量试验方法

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