CN106769743A - The non-contact measurement device for measuring and method of a kind of aerosol quality and concentration - Google Patents
The non-contact measurement device for measuring and method of a kind of aerosol quality and concentration Download PDFInfo
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- CN106769743A CN106769743A CN201710127005.4A CN201710127005A CN106769743A CN 106769743 A CN106769743 A CN 106769743A CN 201710127005 A CN201710127005 A CN 201710127005A CN 106769743 A CN106769743 A CN 106769743A
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- 239000000443 aerosol Substances 0.000 title claims abstract description 74
- 238000000034 method Methods 0.000 title claims abstract description 29
- 238000005259 measurement Methods 0.000 title claims abstract description 17
- 238000009826 distribution Methods 0.000 claims abstract description 13
- 230000000007 visual effect Effects 0.000 claims description 11
- 230000003287 optical effect Effects 0.000 claims description 6
- 238000013500 data storage Methods 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 abstract description 4
- 230000001678 irradiating effect Effects 0.000 abstract description 4
- 238000012545 processing Methods 0.000 abstract description 4
- 238000001514 detection method Methods 0.000 abstract description 2
- 238000005070 sampling Methods 0.000 description 4
- 238000009792 diffusion process Methods 0.000 description 3
- 239000003292 glue Substances 0.000 description 3
- 239000004065 semiconductor Substances 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 238000000149 argon plasma sintering Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000003760 hair shine Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000004611 spectroscopical analysis Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N15/06—Investigating concentration of particle suspensions
-
- G01N15/075—
Abstract
The present invention relates to the non-contact measurement device for measuring and method of a kind of aerosol quality and concentration, belong to laser technology and technical field of image processing.It is measurement aerosol mass concentration distributions in space, with image processing techniques be combined Laser Detection Technique by the present invention, first with the corresponding relation between the return laser beam voltage and the gray level image of laser irradiating position of the aerosol of laser irradiating position, set up gradation of image and return laser beam voltage, empirical relation expression formula between gradation of image and mass concentration, gradation of image according to aerosol non-laser irradiation position is finally inversed by the aerosol gradation of image of non-laser irradiation position, so as to obtain the aerosol quality and concentration field distribution in IMAQ memory module acquisition field of view.
Description
Technical field
The present invention relates to the non-contact measurement device for measuring and method of a kind of aerosol quality and concentration, belong to laser technology and figure
As processing technology field.
Background technology
Aerosol concentration measuring method has sampling method and non-sampling method.Sampling method includes filtering weight method, attenuation sensors
With piezo-electric crystal method etc.；Including optical method, acoustic method and charge method etc., wherein optical method includes image method, response to non-sampling method
Spectrometry, optical transmission method and light scattering method etc..The characteristics of aerosol has wide spatial distribution scope and uneven concentration distribution, at present
Aerosol concentration measuring method can only measure the aerosol quality and concentration of regional area, it is impossible to obtain aerosol quality and concentration
Spatial distribution.
The content of the invention
The invention aims to solve the problems, such as that prior art can only measure regional area aerosol quality and concentration, carry
For the non-contact measurement device for measuring and method of a kind of aerosol quality and concentration, aerosol mass concentration in space can be measured
Distribution.
The purpose of the present invention is achieved by the following technical solution.
The non-contact measurement device for measuring and method of a kind of aerosol quality and concentration, comprise the following steps that：
Step one, the position of vertical irradiation hot spot under fixed range on standard diffusing reflection plate is determined, while ensuring to shine
Hot spot is penetrated to be entirely located on standard diffusing reflection plate；
Step 2, determine visual field of the IMAQ memory module comprising facula position, keep laser transmitting-receiving memory module, figure
As collection memory module and the irreflexive relative position of standard；
Step 3, standard diffusing reflection plate is removed, the aerosol of fixed mass concentration is discharged at standard diffusing reflection position；
Return laser beam voltage at step 4, record facula position, while gathering the gradation of image information at facula position；
Step 5, aerosol quality and concentration is varied multiple times, repeat step three, step 4 obtains many at this facula position
Individual return laser beam voltage, and corresponding multiple images gray value at this facula position；
Step 6, the multiple return laser beam voltages, the corresponding multiple images gray value that are obtained by step 5, and accordingly
Aerosol mass concentration, using software fitting obtain gradation of image and aerosol quality and concentration empirical relation expression formula,
The empirical relation expression formula of gradation of image and return laser beam voltage；
Step 7, the empirical relation expression formula by step 6, non-light in inverting IMAQ memory module acquisition field of view
The mass concentration of spot position, so as to obtain the aerosol quality and concentration field distribution in IMAQ memory module acquisition field of view.
A kind of non-contact measurement device for measuring of aerosol quality and concentration, including a computer and some set laser transmitting-receivings are deposited
Storage module, IMAQ memory module and standard diffusing reflection plate；Laser transmitting-receiving memory module, IMAQ memory module and standard
Diffusing reflection plate quantity is identical；Laser transmitting-receiving memory module, IMAQ memory module are located at the same of aerosol quality and concentration
Side；Standard diffusing reflection plate is used to determine laser spot position；Laser transmitting-receiving memory module is used to launch and receive laser, and will return
Ripple signal is represented in the form of a voltage；Laser transmitting-receiving memory module is deposited including Laser emission component, laser pick-off component and data
Storage component, is connected by order wire with computer；IMAQ memory module be used for image collection and storage, including camera and
Image storage assembly, is connected by order wire with computer；Image processing software and curve fitting software are installed on computer.
The course of work：
(1) laser, mobile standard diffusing reflection plate, it is ensured that laser facula vertically shines are launched by laser transmitting-receiving memory module
Penetrate standard diffusing reflection plate and hot spot is entirely located on standard diffusing reflection plate, keep the two distance constant；
(2) adjustment IMAQ memory module visual field, it is ensured that laser facula is included in visual field, keeps laser transmitting-receiving to deposit
Storage module, IMAQ memory module, standard diffusing reflection plate three relative position keep constant；
(3) standard diffusing reflection plate is removed, the aerosol of fixed mass concentration is discharged at standard diffusing reflection Board position；
(4) the return laser beam voltage at the laser spot position that recording laser transmitting-receiving memory module is received, while using figure
As collection memory module gathers the gradation of image information at facula position and is uploaded to computer；
(5) aerosol quality and concentration is varied multiple times, (3), (4) are repeated, the multiple return laser beams at this facula position are obtained
Corresponding multiple images gray value at voltage, and this facula position；
(6) multiple return laser beam voltages, the corresponding multiple images gray value obtained by (5), and corresponding gas is molten
The mass concentration of glue, the empirical relation for obtaining gradation of image and aerosol quality and concentration using curve fitting software fitting is expressed
The empirical relation expression formula of formula, gradation of image and return laser beam voltage；
(7) half-tone information at non-facula position is gathered using image processing software, is expressed by the empirical relation of (6)
Formula, the aerosol quality and concentration of non-facula position in inverting IMAQ memory module acquisition field of view, so as to obtain IMAQ
Aerosol quality and concentration field distribution in memory module acquisition field of view.
Beneficial effect
Laser Detection Technique is combined with image processing techniques, the return laser beam voltage and gradation of image of aerosol is set up
Between corresponding relation, according to aerosol gradation of image information and the return laser beam voltage of laser irradiating position, be finally inversed by non-
The mass concentration of the aerosol of laser irradiating position, so as to realize the measurement to aerosol quality and concentration spatial distribution.
Brief description of the drawings
Fig. 1 is the structural representation of measurement apparatus of the present invention；
Fig. 2 is the flow chart of measuring method of the present invention；
Fig. 3 is the schematic diagram of the embodiment of the present invention；
Fig. 4 is irradiated to the hot spot schematic diagram on standard diffusing reflection plate for the embodiment of the present invention；
Fig. 5 is embodiment of the present invention gained gradation of image and aerosol quality and concentration linear relationship chart；
Fig. 6 is embodiment of the present invention gained gradation of image and return laser beam voltage linearity relationship figure；
Fig. 7 is the real-time dynamic acquisition procedures group figure of aerosol diffusion process.
Specific embodiment
The invention will be further described with reference to the accompanying drawings and examples, but herein below be not used in restriction it is of the invention
Protection domain.
Embodiment 1
The non-contact measurement device for measuring and method of a kind of aerosol quality and concentration, as shown in figure 1, comprising the following steps that：
Step one, the position of vertical irradiation hot spot under fixed range on standard diffusing reflection plate is determined, while ensuring to shine
Hot spot is penetrated to be entirely located in standard diffusing reflection；
Step 2, determine visual field of the IMAQ memory module comprising facula position, keep Laser emission receiving unit, figure
As collection memory module and the irreflexive relative position of standard；
Step 3, standard diffusing reflection plate is removed, the aerosol of fixed mass concentration is discharged at standard diffusing reflection position；
Return laser beam voltage at step 4, record facula position, while gathering the gradation of image information at facula position；
Step 5, aerosol quality and concentration is varied multiple times, repeat step three, step 4 obtains many at this facula position
Individual return laser beam voltage, and corresponding multiple images gray value at this facula position；
Step 6, the multiple return laser beam voltages, the corresponding multiple images gray value that are obtained by step 5, and accordingly
Aerosol mass concentration, using software fitting obtain gradation of image and aerosol quality and concentration empirical relation expression formula,
The empirical relation expression formula of gradation of image and return laser beam voltage；
Step 7, the empirical relation expression formula by step 6, non-light in inverting IMAQ memory module acquisition field of view
The mass concentration of spot position, so as to obtain the aerosol quality and concentration field distribution in IMAQ memory module acquisition field of view.
A kind of non-contact measurement device for measuring of aerosol space quality concentration field is present embodiments provided, as shown in figure 3, including
1 computer and 1 set of laser transmitting-receiving memory module, IMAQ memory module and standard diffusing reflection plate；Laser transmitting-receiving stores mould
Block, IMAQ memory module are identical with standard diffusing reflection plate quantity；Laser transmitting-receiving memory module includes semiconductor laser, swashs
Light device drive circuit, transmitting light beam shaping optical system, reception light beam convergence optical system, photodetector, amplifying circuit, A/
D change-over circuits, FLASH storage circuits and USB communication interface, are connected by USB line with computer；IMAQ memory module bag
CCD camera, image storage assembly and USB communication interface are included, is connected with computer by USB line；Image is installed on computer
Treatment software and curve fitting software.
The course of work, as shown in Fig. 2 comprising the following steps：
(1) the present embodiment uses 1 computer and 1 set of laser transmitting-receiving memory module, IMAQ memory module and standard
Diffusing reflection plate.Semiconductor laser model 905D1S3J09UA in laser transmitting-receiving memory module, photodetector model is
BPX-65.The model DST-918 of the CCD camera in IMAQ memory module.Signal source produces repetition 1kHz, pulsewidth 20ns
Pumping signal.Using photography cake as aerosol occurring source.Laser, mobile mark are launched by laser transmitting-receiving memory module
Quasi- diffusing reflection plate, it is ensured that laser facula vertical irradiation standard diffusing reflection plate and hot spot is entirely located on standard diffusing reflection plate, protects
Hold the two distance constant.Hot spot irradiation position is as shown in Figure 4；
(2) adjustment IMAQ memory module visual field, it is ensured that laser facula is included in visual field, keeps laser transmitting-receiving to deposit
Storage module, IMAQ memory module, standard diffusing reflection plate three relative position keep constant；
(3) standard diffusing reflection plate is removed, the aerosol of fixed mass concentration is discharged at standard diffusing reflection Board position；
(4) the return laser beam voltage at the laser spot position of recording laser transmitting-receiving memory module feedback, while using figure
As collection memory module gathers the gradation of image information at facula position and is uploaded to computer；
(5) aerosol quality and concentration is varied multiple times, (3), (4) are repeated, the multiple return laser beams at this facula position are obtained
Corresponding multiple images gray value at voltage, and this facula position.Record data is as shown in table 1；
The Experiment Data Records table (embodiment 1) of table 1
| Gray scale | Echo voltage (mV) | Mass concentration (g/m3) |
| 5 | 28.50 | 0.58 |
| 20 | 145.25 | 2.16 |
| 22 | 156.70 | 2.17 |
| 25 | 217.00 | 2.98 |
| 32 | 275.10 | 3.91 |
| 37 | 389.80 | 5.47 |
| 40 | 521.90 | 7.79 |
| 43 | 602.00 | 9.68 |
| 48 | 920.00 | 15.43 |
(6) multiple return laser beam voltages, the corresponding multiple images gray value obtained by (5), and corresponding gas is molten
The mass concentration of glue, relation curve such as Fig. 5 of gradation of image and aerosol quality and concentration is obtained using curve fitting software fitting
Shown, wherein x-axis coordinate is gray scale, does not have unit, and empirical relation expression formula is y=0.29x-3.52.Gradation of image and laser
The relation curve of echo voltage does not have unit as shown in fig. 6, wherein x-axis coordinate is gray scale, and empirical relation expression formula is y=
18.42x-201.00；
(7) half-tone information at non-facula position is gathered using image processing software, is expressed by the empirical relation of (6)
Formula, the aerosol quality and concentration of non-facula position in inverting IMAQ memory module acquisition field of view, so as to obtain IMAQ
The aerosol quality and concentration field distribution of memory module acquisition field of view.Synchronization diverse location aerosol mass obtained by calculating is dense
Degree is as shown in table 2 with actual measurement income value.
The aerosol quality and concentration theoretical value of table 2 and actual measured amount
| Gray scale | Mass concentration theoretical value (g/m3) | Mass concentration measured value (g/m3) |
| 28 | 4.81 | 3.64 |
| 30 | 5.41 | 4.08 |
| 39 | 8.09 | 7.95 |
| 45 | 9.88 | 10.98 |
| 23 | 3.32 | 3.72 |
| 40 | 8.39 | 8.26 |
| 37 | 7.49 | 6.05 |
| 27 | 4.51 | 3.75 |
Embodiment 2
(1) the present embodiment uses 1 computer and 1 set of laser transmitting-receiving memory module, IMAQ memory module and standard
Diffusing reflection plate.Semiconductor laser model 905D1S3J09UA in laser transmitting-receiving memory module, photodetector model is
BPX-65.The model DST-918 of the CCD camera in IMAQ memory module.Signal source produces repetition 1kHz, pulsewidth 20ns
Pumping signal.Using photography cake as aerosol occurring source.Laser, mobile mark are launched by laser transmitting-receiving memory module
Quasi- diffusing reflection plate, it is ensured that laser facula vertical irradiation standard diffusing reflection plate and hot spot is entirely located on standard diffusing reflection plate, protects
Hold the two distance constant.Hot spot irradiation position is as shown in Figure 4；
(2) adjustment IMAQ memory module visual field, it is ensured that laser facula is included in visual field, keeps laser transmitting-receiving to deposit
Storage module, IMAQ memory module, standard diffusing reflection plate three relative position keep constant；
(3) standard diffusing reflection plate is removed, the aerosol of fixed mass concentration is discharged at standard diffusing reflection Board position；
(4) the return laser beam voltage at the laser spot position of recording laser transmitting-receiving memory module feedback, while using figure
As collection memory module gathers the gradation of image information at facula position and is uploaded to computer；
(5) aerosol quality and concentration is varied multiple times, (3), (4) are repeated, the multiple return laser beams at this facula position are obtained
Corresponding multiple images gray value at voltage, and this facula position.Record data is as shown in table 3；
The Experiment Data Records table (embodiment 2) of table 3
| Gray scale | Echo voltage (mV) | Mass concentration (g/m3) |
| 5 | 28.50 | 0.58 |
| 20 | 145.25 | 2.16 |
| 22 | 156.70 | 2.17 |
| 25 | 217.00 | 2.98 |
| 32 | 275.10 | 3.91 |
| 37 | 389.80 | 5.47 |
| 40 | 521.90 | 7.79 |
| 43 | 602.00 | 9.68 |
| 48 | 920.00 | 15.43 |
(6) multiple return laser beam voltages, the corresponding multiple images gray value obtained by (5), and corresponding gas is molten
The mass concentration of glue, relation curve such as Fig. 5 of gradation of image and aerosol quality and concentration is obtained using curve fitting software fitting
Shown, wherein x-axis coordinate is gray scale, does not have unit, and empirical relation expression formula is y=0.29x-3.52.Gradation of image and laser
The relation curve of echo voltage does not have unit as shown in fig. 6, wherein x-axis coordinate is gray scale, and empirical relation expression formula is y=
18.42x-201.00；
(7) fixed position is carried out in the diffusion process using image processing software to photography cake aerosol quality and concentration
Dynamic real-time measurement, the real-time dynamic acquisition procedures group figure of aerosol diffusion process are as shown in fig. 7, the empirical relation table for passing through (6)
Up to formula, same position aerosol quality and concentration not in the same time in inverting IMAQ memory module acquisition field of view.Not in the same time
Same position aerosol quality and concentration is as shown in table 4.
The aerosol quality and concentration not in the same time at same position of table 4
| Different time chart pictures | Gray scale | Mass concentration calculated value (g/m3) |
| a | 40 | 9.36 |
| b | 42 | 10.03 |
| c | 43 | 10.37 |
| d | 45 | 11.04 |
| e | 44 | 10.70 |
| f | 44 | 10.70 |
| g | 42 | 10.03 |
| h | 38 | 8.69 |
| i | 40 | 9.36 |
| j | 39 | 9.02 |
Claims (3)
1. the non-contact measurement device for measuring and method of a kind of aerosol quality and concentration, it is characterised in that：Comprise the following steps that：
Step one, the position of vertical irradiation hot spot under fixed range on standard diffusing reflection plate is determined, while ensuring irradiation light
Spot is entirely located on standard diffusing reflection plate；
Step 2, determine visual field of the IMAQ memory module comprising facula position, keep laser transmitting-receiving memory module, image to adopt
Collection memory module and the irreflexive relative position of standard；
Step 3, standard diffusing reflection plate is removed, the aerosol of fixed mass concentration is discharged at standard diffusing reflection position；
Return laser beam voltage at step 4, record facula position, while gathering the gradation of image information at facula position；
Step 5, aerosol quality and concentration is varied multiple times, repeat step three, step 4 obtains the multiple at this facula position and swashs
Corresponding multiple images gray value at optical echo voltage, and this facula position；
Step 6, the multiple return laser beam voltages, the corresponding multiple images gray value that are obtained by step 5, and corresponding gas
The mass concentration of colloidal sol, empirical relation expression formula, the image of gradation of image and aerosol quality and concentration are obtained using software fitting
The empirical relation expression formula of gray scale and return laser beam voltage；
Step 7, the empirical relation expression formula by step 6, non-hot spot position in inverting IMAQ memory module acquisition field of view
The mass concentration put, so as to obtain the aerosol quality and concentration field distribution in IMAQ memory module acquisition field of view.
2. the non-contact measurement device for measuring of a kind of aerosol quality and concentration, it is characterised in that：Including a computer and some sets
Laser transmitting-receiving memory module, IMAQ memory module and standard diffusing reflection plate；Laser transmitting-receiving memory module, IMAQ storage
Module is identical with standard diffusing reflection plate quantity；It is dense that laser transmitting-receiving memory module, IMAQ memory module are located at aerosol mass
Spend the same side of field；Standard diffusing reflection plate is used to determine laser spot position；Laser transmitting-receiving memory module is used to launch and receive
Laser, and echo-signal is represented in the form of a voltage；Laser transmitting-receiving memory module includes Laser emission component, laser pick-off group
Part and data storage component, are connected by order wire with computer；IMAQ memory module is used for the collection and storage of image,
Including camera and image storage assembly, it is connected with computer by order wire；Image processing software is installed with song on computer
Line fitting software.
3. the non-contact measurement device for measuring of a kind of aerosol quality and concentration as claimed in claim 2, it is characterised in that：The dress
The measuring method put is：
(1) laser, mobile standard diffusing reflection plate, it is ensured that laser facula vertical irradiation mark are launched by laser transmitting-receiving memory module
Quasi- diffusing reflection plate and hot spot is entirely located on standard diffusing reflection plate, keeps the two distance constant；
(2) adjustment IMAQ memory module visual field, it is ensured that laser facula is included in visual field, keeps laser transmitting-receiving storage mould
Block, IMAQ memory module, standard diffusing reflection plate three relative position keep constant；
(3) standard diffusing reflection plate is removed, the aerosol of fixed mass concentration is discharged at standard diffusing reflection Board position；
(4) the return laser beam voltage at the laser spot position that recording laser transmitting-receiving memory module is received, while being adopted using image
Collection memory module gathers the gradation of image information at facula position and is uploaded to computer；
(5) aerosol quality and concentration is varied multiple times, (3), (4) are repeated, the multiple return laser beam voltages at this facula position are obtained,
And corresponding multiple images gray value at this facula position；
(6) multiple return laser beam voltages, the corresponding multiple images gray value obtained by (5), and corresponding aerosol
Mass concentration, empirical relation expression formula, the figure of gradation of image and aerosol quality and concentration are obtained using curve fitting software fitting
As gray scale and the empirical relation expression formula of return laser beam voltage；
(7) half-tone information at non-facula position is gathered using image processing software, by the empirical relation expression formula of (6), instead
The aerosol quality and concentration of non-facula position in IMAQ memory module acquisition field of view is drilled, so as to obtain IMAQ storage mould
Aerosol quality and concentration field distribution in block acquisition field of view.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710127005.4A CN106769743B (en) | 2017-03-06 | 2017-03-06 | Non-contact measurement device and method for aerosol mass concentration field |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710127005.4A CN106769743B (en) | 2017-03-06 | 2017-03-06 | Non-contact measurement device and method for aerosol mass concentration field |
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| Publication Number | Publication Date |
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| CN106769743A true CN106769743A (en) | 2017-05-31 |
| CN106769743B CN106769743B (en) | 2020-03-17 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114429589A (en) * | 2022-04-07 | 2022-05-03 | 北京理工大学 | Hydrogen leakage concentration distribution prediction method and system |
| CN115494523A (en) * | 2022-11-21 | 2022-12-20 | 珩辉光电测量技术(吉林)有限公司 | Atmospheric pollutant concentration detection device and detection method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104316443A (en) * | 2014-09-30 | 2015-01-28 | 杭州电子科技大学 | PM2.5 concentration monitoring method based on CCD back scattering |
| CN104729689A (en) * | 2015-03-12 | 2015-06-24 | 西北核技术研究所 | High-energy laser spot on-line monitoring device based on reflector rear surface scattering |
-
2017
- 2017-03-06 CN CN201710127005.4A patent/CN106769743B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104316443A (en) * | 2014-09-30 | 2015-01-28 | 杭州电子科技大学 | PM2.5 concentration monitoring method based on CCD back scattering |
| CN104729689A (en) * | 2015-03-12 | 2015-06-24 | 西北核技术研究所 | High-energy laser spot on-line monitoring device based on reflector rear surface scattering |
Non-Patent Citations (4)
| Title |
|---|
| 张海庄等: "ＣＣＤ摄像法采集激光光斑图像方法研究", 《光学与光电技术》 * |
| 王新玲: "基于图像的烟雾浓度检测技术研究", 《中国优秀硕士学位论文全文数据库 信息科技辑》 * |
| 胡淼等: "基于ＣＣＤ侧向散射激光雷达的PM2.5浓度测量研究", 《光学学报》 * |
| 顾杰等: "利用数字图像处理技术测量浓度场的实验研究", 《水动力学研究与进展》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114429589A (en) * | 2022-04-07 | 2022-05-03 | 北京理工大学 | Hydrogen leakage concentration distribution prediction method and system |
| CN115494523A (en) * | 2022-11-21 | 2022-12-20 | 珩辉光电测量技术(吉林)有限公司 | Atmospheric pollutant concentration detection device and detection method |
| CN115494523B (en) * | 2022-11-21 | 2023-02-28 | 珩辉光电测量技术(吉林)有限公司 | Atmospheric pollutant concentration detection device and detection method |
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| CN106769743B (en) | 2020-03-17 |
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