CN113252240A - Portable optical pressure sensitive coating static pressure calibration cabin and calibration method - Google Patents
Portable optical pressure sensitive coating static pressure calibration cabin and calibration method Download PDFInfo
- Publication number
- CN113252240A CN113252240A CN202110508280.7A CN202110508280A CN113252240A CN 113252240 A CN113252240 A CN 113252240A CN 202110508280 A CN202110508280 A CN 202110508280A CN 113252240 A CN113252240 A CN 113252240A
- Authority
- CN
- China
- Prior art keywords
- pressure
- calibration
- cabin
- pmt
- static pressure
- 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.)
- Pending
Links
- 230000003068 static effect Effects 0.000 title claims abstract description 29
- 230000003287 optical effect Effects 0.000 title claims abstract description 23
- 238000000576 coating method Methods 0.000 title claims abstract description 12
- 239000011248 coating agent Substances 0.000 title claims abstract description 11
- 238000000034 method Methods 0.000 title claims abstract description 9
- 238000009596 phenolsulfonphthalein test Methods 0.000 claims abstract description 11
- 239000003973 paint Substances 0.000 claims description 14
- 230000005540 biological transmission Effects 0.000 claims description 4
- 238000011088 calibration curve Methods 0.000 claims description 4
- 239000002775 capsule Substances 0.000 claims description 4
- 238000002474 experimental method Methods 0.000 abstract description 5
- 238000005286 illumination Methods 0.000 abstract description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract description 4
- 239000000523 sample Substances 0.000 abstract description 4
- 238000012360 testing method Methods 0.000 description 11
- 239000011521 glass Substances 0.000 description 4
- 238000009530 blood pressure measurement Methods 0.000 description 3
- 239000003822 epoxy resin Substances 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 229920000647 polyepoxide Polymers 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 238000011049 filling Methods 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000005424 photoluminescence Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L25/00—Testing or calibrating of apparatus for measuring force, torque, work, mechanical power, or mechanical efficiency
-
- 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
- G01L1/24—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L11/00—Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by means not provided for in group G01L7/00 or G01L9/00
- G01L11/02—Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by means not provided for in group G01L7/00 or G01L9/00 by optical means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L27/00—Testing or calibrating of apparatus for measuring fluid pressure
- G01L27/002—Calibrating, i.e. establishing true relation between transducer output value and value to be measured, zeroing, linearising or span error determination
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L27/00—Testing or calibrating of apparatus for measuring fluid pressure
- G01L27/002—Calibrating, i.e. establishing true relation between transducer output value and value to be measured, zeroing, linearising or span error determination
- G01L27/005—Apparatus for calibrating pressure sensors
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
Abstract
The invention relates to a portable optical pressure sensitive coating static pressure calibration cabin and a calibration method, which are mainly used for static pressure calibration of optical pressure sensitive coatings. In order to ensure the air tightness in the calibration cabin, the cabin body is divided into an upper cover and a lower cover, and the two covers are connected through threads. Wherein there is a cuboid recess bottom can put into PMT, evenly arranges 4 LED lamps all around, makes it can shine the PSP calibration piece on the upper cover to light evenly. The bottom surface of the lower cover is provided with a pressure sensor measuring hole, so that a probe of the pressure sensor can be positioned at the same horizontal position with the calibration sheet, and the side surface of the lower cover is provided with an air source hole connected with an air source. This calibration cabin is simple structure not only, and shared small, moreover the effectual inconvenient part that need mediate light source and PMT position repeatedly before having solved the experiment to effectively avoided quartz glass viewing aperture in the past because refraction and reflection to the light loss that leads to the fact through its light, four LED lamps also can effectively guarantee that the illumination on the PSP test block is enough even.
Description
Technical Field
The invention belongs to the field of static pressure calibration, and relates to a portable static pressure calibration device which is mainly used for static pressure calibration of optical pressure sensitive paint.
Background
Pressure Sensitive Paint (PSP) measurement technology is an optical Pressure measurement means based on photoluminescence and oxygen quenching, and in recent years, PSP measurement technology gradually occupies a place in the Pressure measurement field with advantages of no interference to a flow field, low experimental cost, realization of global measurement and the like.
The PSP coating needs to be calibrated to obtain the static properties of the coating before pressure measurements can be made using this technique. The static calibration is mainly used for acquiring a function corresponding relation between the optical signal and the pressure so as to convert the light intensity of the shot PSP into the corresponding pressure in the subsequent experiment.
Pressure calibration capsules such as those of patent nos. CN100494941C and CN110044545A are typically closed containers with quartz glass viewing ports, with PSP coupons placed on the bottom of the containers. The light source for exciting the paint and the photomultiplier tube PMT for receiving the fluorescence emitted by the paint are all arranged outside the glass window, and although the pressure calibration cabin can meet the requirement of static pressure calibration, a series of problems still exist. Firstly, the surface information of the PSP test piece is realized through the transmission of light, but because glass windows exist between a light source and the PSP test piece and between a PMT and the test piece in the structure, the glass can inevitably refract and reflect light to influence the experimental result; secondly, because the positions of the light source and the PMT are not fixed, the optical elements need to be rearranged before the experiment is carried out each time, more time is usually spent for obtaining better luminous efficiency, and higher requirements are imposed on experiment operators; the previous light sources are all single light sources, and the illumination uniformity on the PSP test piece cannot be ensured.
Disclosure of Invention
Technical problem to be solved
In order to avoid the defects of the prior art, the invention provides an integrated portable pressure calibration cabin and a calibration method which combine a light source, a PMT (photomultiplier tube) and a calibration cabin together, so that the illumination uniformity on a PSP (pressure sensitive display) test piece can be ensured, and the problems of light pollution such as light reflection and refraction caused by glass can be effectively avoided on the basis. Because PMT and light source exist in the interior, in order to ensure the safety of the optical element, the pressure in the cabin should be 0.2-2 atmospheric pressures, and the range can meet the static calibration of the pressure sensitive coating.
Technical scheme
A portable optical pressure sensitive coating static pressure calibration cabin is characterized by comprising an upper cover and a lower cover which can be separated and combined into a closed space;
a photomultiplier tube PMT is arranged in the upper cover, a light filter is covered on the surface of the photomultiplier tube PMT, and LED lamps are uniformly distributed around the photomultiplier tube PMT;
a temperature controller temperature disc is arranged in the lower cover, a PSP calibration sheet is adhered to the surface of the temperature controller temperature disc, and a pressure signal hole is formed beside the PSP calibration sheet; and the side surface of the lower cover is provided with an air source hole.
The further technical scheme of the invention is as follows: the upper cover and the lower cover are connected in a rotating mode through threads.
The further technical scheme of the invention is as follows: the side surface of the upper cover is provided with a power line for the photomultiplier PMT and the LED lamp and a small hole for leading out the data transmission line of the photomultiplier PMT.
The further technical scheme of the invention is as follows: the number of the LED lamps is 4.
The further technical scheme of the invention is as follows: the air source hole is connected with an air source which is a vacuum tank or an air compressor and is used for changing the pressure in the cabin body.
The further technical scheme of the invention is as follows: the photomultiplier PMT is installed in the form of an embedded groove. A static pressure calibration method realized by a portable optical pressure sensitive coating static pressure calibration cabin is characterized by comprising the following steps:
step 1: the pressure sensor is connected with the multi-path high-speed acquisition card, and monitors and stores pressure signals in the cabin through the pressure signal hole;
step 2: inputting a pressure value required to be given on a computer to change the pressure in the cabin;
and step 3: recording the light intensity value of the PSP test piece exciting light measured by the PMT once when the pressure is changed;
and 4, step 4: the static pressure calibration curve of the PSP can be obtained through the electric signal output by the photomultiplier tube under each pressure and the pressure signal measured by the pressure sensor connected with the pressure signal hole.
Advantageous effects
The invention provides a portable optical pressure sensitive coating static pressure calibration cabin and a calibration method, which have the following beneficial effects:
firstly, the PMT and the four LED lamps are embedded into the cabin, so that a large amount of space is saved, and the PMT and the light source do not need to be positioned again in a calibration preparation stage;
secondly, in order to conveniently replace the PSP test piece, the cabin body is designed into a two-part cylindrical shape and is linked through internal and external threads, so that the sealing performance of the calibration cabin is ensured;
the PMT and the LED lamp are placed on one side, and the test piece coated with the pressure-sensitive paint to be calibrated is adhered on the other side, so that the light emitted by the LED lamp can uniformly and positively irradiate the test piece, and the PMT can accurately receive the fluorescence emitted by the test piece;
fourthly, four LED lamps are designed, so that test errors caused by different excitation intensities of all points of the test piece due to uneven illumination can be effectively avoided;
because PMT and light source are all in the cabin, so do not need the quartz glass viewing port, have effectively avoided the light loss produced by quartz glass.
Drawings
The drawings are only for purposes of illustrating particular embodiments and are not to be construed as limiting the invention, wherein like reference numerals are used to designate like parts throughout.
FIG. 1 is an external view and a perspective view of a pressure calibration chamber
FIG. 2 is a diagram of the upper cover of the pressure calibration chamber
FIG. 3 is a view of the lower cover of the pressure calibration chamber
FIG. 4 is a three-view illustration of a pressure calibration capsule
FIG. 5 is a front view of a pressure calibration chamber body and a cross-sectional view thereof
FIG. 6 is a left side view of the pressure calibration chamber body and a cross-sectional view thereof
FIG. 7 is a top view and a cross-sectional view of the upper and lower covers of the pressure calibration chamber body
For the description of the reference numbers in the figures: 1-pressure signal hole, 2-air source hole, 3-PMT and LED wiring hole, 4-temperature controller temperature disc, 5-upper cover external screw thread, 6-lower cover internal screw thread, 7-photomultiplier PMT, 8-optical filter and 9-LED lamp.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
As shown in fig. 1-7, the calibration chamber of the present invention is divided into an upper cover and a lower cover, and the upper cover and the lower cover are rotatably connected by a screw thread to form a closed calibration chamber. The central position of the upper cover is provided with a cuboid groove for embedding a photomultiplier PMT, and the surface of the PMT is covered with an optical filter for filtering light with an excitation light wavelength, so that only fluorescence emitted by the coating is received by the PMT. Four LED lamps are arranged around the PMT, so that the uniformity of illumination can be effectively guaranteed. The side surface of the upper cover is provided with a small hole, and power lines of the PMT and the LED lamp and a data transmission line of the PMT are LED out from the hole. The disc on the bottom surface of the lower cover is a temperature controller, a PSP calibration sheet can be pasted on the surface of the disc, the calibration sheet is generally pasted on the right opposite surface of the PMT of the upper cover, a hole is arranged beside the calibration sheet and used for connecting a pressure sensor, so that a probe of the pressure sensor can be positioned at the same horizontal position with the calibration sheet, and the hole is arranged at a position close to a PSP test piece, so that the pressure sensed by the sensor is the surface pressure of the PSP test piece. An air source hole 2 is arranged on the side surface of the lower cover and is connected with a vacuum tank or an air compressor for changing the pressure in the cabin body.
The static pressure calibration capsule is assembled as follows:
step 1: a pressure sensor extends into the cabin from a pressure signal hole 1, the pressure sensing part of the sensor is flush with the end face of the test piece, and then epoxy resin is used for filling a gap between a protective sleeve of the sensor and the wall surface hole to prevent air leakage;
step 2: the power lines and signal transmission lines of the PMT and the LED extend out of the holes 3, and gaps between the lines and the wall surface holes are filled with epoxy resin to prevent air leakage;
and step 3: connecting the air inlet pipe with the air source hole 2, and filling a gap between the line and the wall surface hole with epoxy resin to prevent air leakage;
and 4, step 4: before the experiment, the calibration sheet surface was cleaned, the entire device and test strip had to be in a dark environment to prevent paint failure. Spraying optical pressure-sensitive paint, drying, and sticking the test piece to the 4 region with the surface facing outwards after the paint is cured;
and 5: the PMT is placed at the position 7, the probe faces the inside of the cabin, and the optical filter is adhered to the PMT probe, so that the light signal received by the PMT cannot be influenced by light emitted by the LED lamp, and the upper cover and the lower cover of the calibration cabin are screwed down.
The working principle of the assembled static pressure calibration cabin is as follows: the air source is controlled by the computer to change the pressure in the calibration cabin through the air source hole 2, under a dark environment, light emitted by the four LED lamps 9 directly irradiates on the PSP test piece, the test piece can emit fluorescence of different colors according to the pressure of the environment, the fluorescence is filtered by the optical filter 8 to be received by the PMT photomultiplier 7 after the wavelength of LED light, and the electric signal output by the photomultiplier is processed and then is combined with a pressure signal measured by the pressure sensor connected with the pressure signal hole 1 to obtain a static pressure calibration curve of the PSP.
The specific calibration process is as follows:
1. the pressure sensor is connected with the multi-path high-speed acquisition card, and monitors and stores pressure signals in the cabin through the pressure signal hole 1;
2. inputting a pressure value required to be given on a computer to change the pressure in the cabin;
3. recording the light intensity value of the PSP test piece exciting light measured by the PMT once when the pressure is changed;
4. the static pressure calibration curve of the PSP can be obtained through the electric signal output by the photomultiplier tube at each pressure and the pressure signal measured by the pressure sensor connected with the pressure signal hole 1.
In order that those skilled in the art will better understand the present invention, the following detailed description is given with reference to specific examples.
While the invention has been described with reference to specific embodiments, the invention is not limited thereto, and various equivalent modifications or substitutions can be easily made by those skilled in the art within the technical scope of the present disclosure.
Claims (7)
1. A portable optical pressure sensitive coating static pressure calibration cabin is characterized by comprising an upper cover and a lower cover which can be separated and combined into a closed space;
a photomultiplier tube PMT (7) is arranged in the upper cover, a light filter (8) is covered on the surface of the photomultiplier tube PMT (7), and LED lamps (9) are uniformly distributed around the photomultiplier tube PMT (7);
a temperature controller temperature disc (4) is arranged in the lower cover, a PSP calibration sheet is pasted on the surface of the temperature controller temperature disc (4), and a pressure signal hole (1) is arranged beside the PSP calibration sheet; the side surface of the lower cover is provided with an air source hole (2).
2. The portable optical pressure sensitive paint static pressure calibration chamber of claim 1, wherein the upper cover and the lower cover are rotatably connected by a screw thread.
3. The portable optical pressure sensitive paint static pressure calibration chamber according to claim 1, wherein the side of the upper cover is provided with a small hole (3) for leading out power lines of the photomultiplier tube PMT (7) and the LED lamp (9) and a data transmission line of the photomultiplier tube PMT (7).
4. The portable optical pressure-sensitive paint static pressure calibration chamber according to claim 1, characterized in that the number of the LED lamps (9) is 4.
5. The portable optical pressure sensitive paint static pressure calibration chamber of claim 1, wherein the air source hole is connected to an air source which is a vacuum tank or an air compressor for changing the pressure in the chamber.
6. The portable optical pressure sensitive paint static pressure calibration capsule according to claim 1, wherein the photomultiplier tube PMT (7) is installed with an embedded groove.
7. The static pressure calibration method realized by the portable optical pressure sensitive paint static pressure calibration cabin of claim 1 is characterized by comprising the following steps:
step 1: the pressure sensor is connected with the multi-path high-speed acquisition card, and monitors and stores pressure signals in the cabin through the pressure signal hole;
step 2: inputting a pressure value required to be given on a computer to change the pressure in the cabin;
and step 3: recording the light intensity value of the PSP test piece exciting light measured by the PMT once when the pressure is changed;
and 4, step 4: the static pressure calibration curve of the PSP can be obtained through the electric signal output by the photomultiplier tube under each pressure and the pressure signal measured by the pressure sensor connected with the pressure signal hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110508280.7A CN113252240A (en) | 2021-05-11 | 2021-05-11 | Portable optical pressure sensitive coating static pressure calibration cabin and calibration method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110508280.7A CN113252240A (en) | 2021-05-11 | 2021-05-11 | Portable optical pressure sensitive coating static pressure calibration cabin and calibration method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113252240A true CN113252240A (en) | 2021-08-13 |
Family
ID=77222822
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110508280.7A Pending CN113252240A (en) | 2021-05-11 | 2021-05-11 | Portable optical pressure sensitive coating static pressure calibration cabin and calibration method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113252240A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202351177U (en) * | 2011-11-25 | 2012-07-25 | 遵义师范学院 | Aflatoxin detector based on ultraviolet LED light source |
| CN104316262A (en) * | 2014-10-08 | 2015-01-28 | 西北工业大学 | Dual-purpose cabin for dynamic pressure calibration of optical pressure sensitive coatings |
| CN104535498A (en) * | 2014-12-05 | 2015-04-22 | 复旦大学 | Organophosphorus detector |
| CN104990902A (en) * | 2015-06-24 | 2015-10-21 | 石家庄经济学院 | Plant chlorophyll fluorescence detection device based on LED |
| CN106872100A (en) * | 2017-01-12 | 2017-06-20 | 西北工业大学 | Standing wave cast optical pressure sensitive coating Dynamic pressure calibration cabin |
| CN208270147U (en) * | 2018-05-15 | 2018-12-21 | 中车青岛四方机车车辆股份有限公司 | Pressure sensitive coating calibrating installation and calibration system |
| CN110044545A (en) * | 2019-05-05 | 2019-07-23 | 西北工业大学 | Consider that the static double-purpose optical pressure sensitive coating with sinusoidal pressure variation calibrates cabin |
| CN110146220A (en) * | 2019-03-01 | 2019-08-20 | 西北工业大学 | Consider the sinusoid optical pressure dynamic calibration cabin of temperature control and light path layout |
| CN110987358A (en) * | 2019-12-25 | 2020-04-10 | 中国空气动力研究与发展中心低速空气动力研究所 | Quick-response pressure-sensitive paint dynamic calibration device |
| CN112378576A (en) * | 2020-10-29 | 2021-02-19 | 西北工业大学 | Optical pressure sensitive coating pressure calibrating device based on CCD camera |
-
2021
- 2021-05-11 CN CN202110508280.7A patent/CN113252240A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202351177U (en) * | 2011-11-25 | 2012-07-25 | 遵义师范学院 | Aflatoxin detector based on ultraviolet LED light source |
| CN104316262A (en) * | 2014-10-08 | 2015-01-28 | 西北工业大学 | Dual-purpose cabin for dynamic pressure calibration of optical pressure sensitive coatings |
| CN104535498A (en) * | 2014-12-05 | 2015-04-22 | 复旦大学 | Organophosphorus detector |
| CN104990902A (en) * | 2015-06-24 | 2015-10-21 | 石家庄经济学院 | Plant chlorophyll fluorescence detection device based on LED |
| CN106872100A (en) * | 2017-01-12 | 2017-06-20 | 西北工业大学 | Standing wave cast optical pressure sensitive coating Dynamic pressure calibration cabin |
| CN208270147U (en) * | 2018-05-15 | 2018-12-21 | 中车青岛四方机车车辆股份有限公司 | Pressure sensitive coating calibrating installation and calibration system |
| CN110146220A (en) * | 2019-03-01 | 2019-08-20 | 西北工业大学 | Consider the sinusoid optical pressure dynamic calibration cabin of temperature control and light path layout |
| CN110044545A (en) * | 2019-05-05 | 2019-07-23 | 西北工业大学 | Consider that the static double-purpose optical pressure sensitive coating with sinusoidal pressure variation calibrates cabin |
| CN110987358A (en) * | 2019-12-25 | 2020-04-10 | 中国空气动力研究与发展中心低速空气动力研究所 | Quick-response pressure-sensitive paint dynamic calibration device |
| CN112378576A (en) * | 2020-10-29 | 2021-02-19 | 西北工业大学 | Optical pressure sensitive coating pressure calibrating device based on CCD camera |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3773424A (en) | Device for color measurement of liquids in continuous flow | |
| CN107560769A (en) | A kind of whole audience pressure testing system based on thin layer area source and pressure sensitive paint | |
| EP3324160B1 (en) | Standard illuminant color matching box | |
| CN105683739A (en) | Dissolved oxygen sensor | |
| CN110702366B (en) | Embedded optical pressure measurement method for shielding position of hypersonic wind tunnel model | |
| CN104111162A (en) | Light detection device and method for light-emitting element to be detected | |
| CN106068454B (en) | The system and method for the detection and signaling that are terminated for the assembly life-span in dissolved oxygen sensor | |
| CN105897987B (en) | Sensor intelligent manufactures calibrating installation and its calibration method | |
| ITTO20110567A1 (en) | CARTRIDGE FOR BIOCHEMICAL ANALYSIS, BIOCHEMICAL ANALYSIS SYSTEM AND METHOD TO PERFORM A BIOCHEMICAL PROCESS | |
| CN201016843Y (en) | LED light flux testing device employing narrow beam standard light source | |
| CN113252240A (en) | Portable optical pressure sensitive coating static pressure calibration cabin and calibration method | |
| CN105954893A (en) | Configuration method and detection device for liquid crystal optical module | |
| CN108469303B (en) | A kind of solution colour sensor | |
| CN109708849A (en) | A kind of ultraviolet radioactive flux test integrating sphere device | |
| CN101694401B (en) | Method for testing optical attenuation of LED light source | |
| RU91761U1 (en) | REFERENCE DEVICE FOR TRANSFER OF THE SIZE OF THE UNITS OF COORDINATES OF COLOR OF SELF-LIGHTING OBJECTS | |
| EP0076301A1 (en) | Distinct wavelength light reflection measuring apparatus | |
| CN110702367B (en) | Continuous pressure measuring device for shielding position of parallel model of hypersonic wind tunnel | |
| JP2012208024A (en) | Measuring method of florescence spectrum of fluorescent body and measuring device | |
| CN104102008A (en) | Light receiving device capable of increasing light receiving quantity and angle | |
| CN210235822U (en) | Novel portable vacuum box | |
| CN101614589B (en) | Colorimeter optical system | |
| CN111361771A (en) | Cell suspension partial shipment device | |
| CN212845025U (en) | Measurement standard for calibration of luminescence immunoassay analyzer for bottom or lateral detection | |
| CN212780520U (en) | Quantum dot stability testing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20210813 |