CN107796800A - A kind of water environment on-Line Monitor Device and method - Google Patents
A kind of water environment on-Line Monitor Device and method Download PDFInfo
- Publication number
- CN107796800A CN107796800A CN201711225162.5A CN201711225162A CN107796800A CN 107796800 A CN107796800 A CN 107796800A CN 201711225162 A CN201711225162 A CN 201711225162A CN 107796800 A CN107796800 A CN 107796800A
- Authority
- CN
- China
- Prior art keywords
- optical fiber
- fiber circulator
- water environment
- optical fibre
- vacuum chamber
- 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 title claims abstract description 19
- 239000013307 optical fiber Substances 0.000 claims abstract description 60
- 239000000835 fiber Substances 0.000 claims abstract description 48
- 239000004038 photonic crystal Substances 0.000 claims abstract description 28
- 238000001514 detection method Methods 0.000 claims abstract description 27
- 238000012544 monitoring process Methods 0.000 claims abstract description 23
- 230000005540 biological transmission Effects 0.000 claims abstract description 16
- 230000005284 excitation Effects 0.000 claims abstract description 14
- 238000001228 spectrum Methods 0.000 claims description 19
- 238000001069 Raman spectroscopy Methods 0.000 claims description 9
- 238000004458 analytical method Methods 0.000 claims description 4
- 239000013078 crystal Substances 0.000 claims description 2
- 238000007689 inspection Methods 0.000 claims 1
- 230000003993 interaction Effects 0.000 claims 1
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000035945 sensitivity Effects 0.000 abstract description 2
- 239000003344 environmental pollutant Substances 0.000 description 7
- 231100000719 pollutant Toxicity 0.000 description 7
- 239000000463 material Substances 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 238000001479 atomic absorption spectroscopy Methods 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000004817 gas chromatography Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000004083 survival effect Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000000862 absorption spectrum Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002848 electrochemical method Methods 0.000 description 1
- 230000005518 electrochemistry Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 238000003911 water pollution Methods 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
Abstract
The invention discloses a kind of water environment on-Line Monitor Device and method, including excitation source, optical fiber circulator and signal detection receiving device, the excitation source is connected by Transmission Fibers with optical fiber circulator, vacuum chamber is connected with by the first output optical fibre on rear side of the optical fiber circulator, Hollow-Core Photonic Crystal Fibers are provided with rear side of the vacuum chamber, the signal detection receiving device is connected by the second output optical fibre with optical fiber circulator, the beneficial effects of the invention are as follows：Structure of the present invention is novel, and the system is all optical fibre structure, simple light non-maintaining, is suitable for various application scenarios, and detection sensitivity is higher, while can also monitor a variety of data, is suitable for the detection that trace detection is also applied for high concentration.Detecting head comprising vacuum chamber and photonic crystal fiber can be placed in monitoring field, and then transmitting a signal to interior by optical fiber is acquired and analyzes, thus can effectively be monitored on-line, and monitoring efficiency is high.
Description
Technical field
The present invention relates to monitoring water environment technical field, specifically a kind of water environment on-Line Monitor Device and method.
Background technology
Water is fundamental for the survival of mankind, and the survival and development of the safety of aquatic environment to the whole mankind are to closing weight
Will.With modern society, industry, the fast development of economy, various industrial or agricultural contamination accidents are continuous, and water pollution problems causes entirely
Social extensive concern, and water quality monitoring can provide water quality information, be the important step of water environment protection and pollution control, therefore
Realize that the fast automatic on-line monitoring of water environment has very important significance.The conventional method of water quality monitoring has electrochemistry side
Method, gas chromatography, atomic absorption spectroscopy, and AAS etc..
Electrochemical method is mainly composition and content using the electrochemical properties measure test substance of material, it is necessary to treat
Test sample product are sampled analysis, and easily produce secondary pollution to water environment using chemical method, thus are not particularly suited for water ring
The on-line monitoring in border；Gas chromatography is analyzed according to the physical characteristic of material, and pollution will not be produced to water environment, but should
The pollutant kind that method can be analyzed is less, and complicated, is not suitable for the multi-parameter on-line monitoring of water environment；Atom
Absorption spectroanalysis method, by selecting suitable optical source wavelength, the characteristic absorption wavelength for measuring atom determines pollutant kind, root
Determine the concentration of pollutant according to the degree of absorption of absorption spectrum, this method limitation is larger, it is necessary to be selected according to different pollutants
Specific light source, multi-parameter can not be realized while monitored；AAS is that the selective absorbing of light is realized according to material
The detection of pollutant, it is the most common method of current water quality monitoring, the pollutant kind that can be measured is various, but works as pollutant
It is overlapping due to material absorbing spectral line when concentration is higher, the measurement data to make mistake can be obtained.
The content of the invention
It is an object of the invention to provide a kind of water environment on-Line Monitor Device and method, to solve in above-mentioned background technology
The problem of proposition.
To achieve the above object, the present invention provides following technical scheme：
A kind of excitation source, optical fiber circulator and signal detection receiving device, the excitation source pass through Transmission Fibers and optical fiber
Circulator connects, and is connected with vacuum chamber by the first output optical fibre on rear side of the optical fiber circulator, is provided with rear side of the vacuum chamber
Hollow-Core Photonic Crystal Fibers, the signal detection receiving device are connected by the second output optical fibre with optical fiber circulator.
As the further scheme of the present invention：The excitation source is laser structure, and the laser includes but unlimited
In high power multiple-wavelength laser.
As the further scheme of the present invention：The Transmission Fibers connect with optical fiber circulator Single port, and described first is defeated
Go out optical fiber to connect with optical fiber circulator Two-port netwerk, second output optical fibre connects with the port of optical fiber circulator three.
As the further scheme of the present invention：The vacuum chamber side is provided with valve, and the valve is connected with by pipeline
Air pump.
As the further scheme of the present invention：Include spectrum acquisition equipment, detector in the signal detection collection system
And detection terminal, the spectrum acquisition equipment are connected by the second Transmission Fibers with optical fiber circulator, the spectrum acquisition equipment,
Pass through network connection between detector and detection terminal.
As the further scheme of the present invention：The monitoring method comprises the following steps；
1) it is that pressure differential is established at Hollow-Core Photonic Crystal Fibers both ends by vacuum chamber, solution to be measured is entered hollow photon crystal light
Monitoring sample is formed in fine.
2) start excitation source, and exciting light is transferred to by sky by Transmission Fibers, optical fiber circulator, the first output optical fibre
In heart photonic crystal fiber.
3) exciting light and solution to be measured interact in Hollow-Core Photonic Crystal Fibers and produce Raman scattering.
4) scatter light wave and collected by the first Transmission Fibers, optical fiber circulator, the second output optical fibre and then signal detection and be
In system.
5) light wave that Raman scattering is formed is carried out by signal detection collection system detecting collection and by monochromator point
Analysis draws corresponding spectrum, and then the spectrum that monochromator monitors is compared and then drawn with normalized Raman scattering spectrum and is treated
Survey solution composition and concentration.
Compared with prior art, the beneficial effects of the invention are as follows：Structure of the present invention is novel, using Hollow-Core Photonic Crystal Fibers
As sample cell, using transmission medium of the optical fiber as light, while using fibre ring devices as beam splitter, thus this is
Unite as all optical fibre structure, it is simple light non-maintaining, it is suitable for various application scenarios, and detection sensitivity is higher, while can be with
A variety of data are monitored, are suitable for the detection that trace detection is also applied for high concentration.Spy comprising vacuum chamber and photonic crystal fiber
Gauge head can be placed in monitoring field, and then transmitting a signal to interior by optical fiber is acquired and analyzes, thus can be effective
Monitored on-line, and monitoring efficiency is high.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention.
Fig. 2 is the principle schematic of the present invention.
In figure：1- excitation sources, 2- optical fiber circulators, 3- vacuum chambers, 4- Hollow-Core Photonic Crystal Fibers, 5- spectrum acquisitions are set
Standby, 6- Transmission Fibers, the output optical fibres of 7- first, the output optical fibres of 8- second, 9- valves, 10- air pumps, 11- detectors, 12- monitorings
Terminal, 13- solution pools, 14- signal detection collection systems.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
Refer to Fig. 1-2, in the embodiment of the present invention, a kind of water environment on-Line Monitor Device and method, including excitation source
1st, optical fiber circulator 2 and signal detection receiving device 14, excitation source 1 pass through Transmission Fibers 6 and 1 port of optical fiber circulator 2
Connection, light source is set to be inputted by 1 port of optical fiber circulator 2, vacuum chamber 3 passes through the first output optical fibre 7 and optical fiber circulator 2
2 ports connect, and the rear side of vacuum chamber 3 is provided with Hollow-Core Photonic Crystal Fibers 4, and the first output optical fibre 7 and Hollow-Core Photonic Crystal Fibers 4 are equal
It is fixed on by vacuum glue in vacuum chamber 3, while the first output optical fibre 7 and Hollow-Core Photonic Crystal Fibers 4 are carried out in vacuum chamber 3
Fibre core couples, and coupling efficiency is more than 90%, and the side of vacuum chamber 3 is provided with valve 9, and valve 9 is connected with air pump 10, gas by pipeline
10 preferred vavuum pump of pump, spectrum acquisition equipment 5 are connected by the second Transmission Fibers 8 with 3 ports of optical fiber circulator 2, and spectrum connects
Pass through network connection between receiving unit 5, detector 11 and detection terminal 12.
Structure of the present invention is novel, stable, in the use of the present invention, being first placed into Hollow-Core Photonic Crystal Fibers 4
In solution pool 13 so that the end of Hollow-Core Photonic Crystal Fibers 4 is fully contacted with solution to be measured, while booster air pump 10, is led to
Air pump 10 is crossed to maintain the vacuum environment in vacuum chamber 3, in the presence of the pressure at two ends difference of Hollow-Core Photonic Crystal Fibers 4 so that
Solution to be measured is entered in Hollow-Core Photonic Crystal Fibers 4, and then forms sample fiber pond, then starts excitation source 1, by swashing
Hair device sends the light source of certain frequency, is then transferred to light source in optical fiber circulator 2 by Transmission Fibers 6, then pass through optical fiber
Light source is transferred in the first output optical fibre 7 by the unidirectional admittance effect of circulator 2, due to first output optical fibre 7 in vacuum chamber 3
Fibre core coupling is carried out between Hollow-Core Photonic Crystal Fibers 4, and then causes light source to enter Hollow-Core Photonic Crystal Fibers 4, and then
The light source for making to enter in Hollow-Core Photonic Crystal Fibers 4 interacts and produced with the solution to be measured in Hollow-Core Photonic Crystal Fibers 4
Raman scattering, light wave caused by scattering are transferred in optical fiber circulator 2 by the first output optical fibre 7, then pass through the second output
Optical fiber 8 is transferred in spectrum acquisition equipment 5, and then scattered wave signal is carried out detecting collection by detector 11 and passes through monochrome
The corresponding spectrum of Raman scattering light wave at machine monitoring, then the spectrum of monitoring is scattered with normalized Raman by monitoring terminal 12 again
Spectrum is compared, and then can draw the composition and concentration of solution to be measured, can will be by hollow during specifically used
The detecting head and light source and detection collection system that photonic crystal fiber 4 and vacuum chamber 3 form are both placed in monitoring field and supervised
Survey, also detecting head only can be placed on monitoring field, monitoring signals then are transferred into interior enters collection and analysis, the opposing party
Face, pressure differential of the sealing vacuum chamber 3 except forward direction can be ensured so that water quality to be measured enters inside Hollow-Core Photonic Crystal Fibers 4,
Simultaneously also can be by filling the both ends of gases at high pressure photonic crystal fiber 4 into reverse pressure differential to intracavitary, so that will be to be measured
Sample discharges photonic crystal fiber 4, reaches the cleaning of the sample cell of Hollow-Core Photonic Crystal Fibers 4, different for use in different time
The detection of water quality.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, Er Qie
In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, embodiment all should be regarded as exemplary, and be nonrestrictive, the scope of the present invention is by appended power
Profit requires rather than described above limits, it is intended that all in the implication and scope of the equivalency of claim by falling
Change is included in the present invention.Any reference in claim should not be considered as to the involved claim of limitation.
Moreover, it will be appreciated that although the present specification is described in terms of embodiments, not each embodiment is only wrapped
Containing an independent technical scheme, this narrating mode of specification is only that those skilled in the art should for clarity
Using specification as an entirety, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
It is appreciated that other embodiment.
Claims (6)
1. a kind of water environment on-Line Monitor Device, including excitation source (1), optical fiber circulator (2) and signal detection receiving device
(14), it is characterised in that the excitation source (1) is connected by Transmission Fibers (6) with optical fiber circulator (2), the fiber optic loop
Vacuum chamber (3) is connected with by the first output optical fibre (7) on rear side of shape device (2), it is brilliant to be provided with hollow photon on rear side of the vacuum chamber (3)
Body optical fiber (4), the signal detection receiving device (14) are connected by the second output optical fibre (8) with optical fiber circulator (2).
2. a kind of water environment on-Line Monitor Device according to claim 1 and method, it is characterised in that the excitation source
(1) it is laser structure, the laser includes but is not limited to high power multiple-wavelength laser.
3. a kind of water environment on-Line Monitor Device according to claim 1 and method, it is characterised in that the Transmission Fibers
(6) connected with optical fiber circulator (2) Single port, first output optical fibre (7) connects with optical fiber circulator (2) Two-port netwerk, institute
The second output optical fibre (8) is stated to connect with the port of optical fiber circulator (2) three.
4. a kind of water environment on-Line Monitor Device according to claim 1 and method, it is characterised in that the vacuum chamber
(3) side is provided with valve (9), and the valve (9) is connected with air pump (10) by pipeline.
5. a kind of water environment on-Line Monitor Device according to claim 1 and method, it is characterised in that the signal detection
Include spectrum acquisition equipment (5), detector (11) and detection terminal (12), the spectrum acquisition equipment in collection system (14)
(5) connected by the second Transmission Fibers (8) with optical fiber circulator (2), the spectrum acquisition equipment (5), detector (11) and inspection
Pass through network connection between survey terminal (12).
6. a kind of water environment on-line monitoring method as claimed in claim 1, it is characterised in that the monitoring method includes following
Step；
1) it is that pressure differential is established at Hollow-Core Photonic Crystal Fibers (4) both ends by vacuum chamber (3), solution to be measured is entered hollow photon
Monitoring sample is formed in crystal optical fibre (4)；
2) excitation source (1) is started, and by Transmission Fibers (6), optical fiber circulator (2), the first output optical fibre (7) by exciting light
It is transferred in Hollow-Core Photonic Crystal Fibers (4)；
3) exciting light in the middle interaction of Hollow-Core Photonic Crystal Fibers (4) and produces Raman scattering with solution to be measured；
4) light wave is scattered to receive by the first Transmission Fibers (7), optical fiber circulator (2), the detection of the second output optical fibre (8) entering signal
In collecting system (14)；
5) light wave formed by signal detection collection system (14) to Raman scattering carries out detecting collection and by monochromator point
Analysis draws corresponding spectrum, and then the spectrum that monochromator monitors is compared and then drawn with normalized Raman scattering spectrum and is treated
Survey solution composition and concentration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711225162.5A CN107796800A (en) | 2017-11-29 | 2017-11-29 | A kind of water environment on-Line Monitor Device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711225162.5A CN107796800A (en) | 2017-11-29 | 2017-11-29 | A kind of water environment on-Line Monitor Device and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107796800A true CN107796800A (en) | 2018-03-13 |
Family
ID=61537912
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711225162.5A Pending CN107796800A (en) | 2017-11-29 | 2017-11-29 | A kind of water environment on-Line Monitor Device and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107796800A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108645561A (en) * | 2018-06-01 | 2018-10-12 | 西安西电变压器有限责任公司 | Vacuum degree harvester, vacuum-degree monitoring component and method |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101281134A (en) * | 2008-05-12 | 2008-10-08 | 中国科学院安徽光学精密机械研究所 | Method and device for detecting nanostructured staying quality poison material |
| CN101285908A (en) * | 2007-04-13 | 2008-10-15 | 中国科学院安徽光学精密机械研究所 | Manufacture method of all-optical fiber heavy pressure gas chamber based on hollow photon crystal optical fibre |
| CN202512262U (en) * | 2012-04-17 | 2012-10-31 | 哈尔滨理工大学 | Pouring device of high-viscosity liquid optical fiber with small core diameter and long liquid core |
| CN103151686A (en) * | 2013-02-22 | 2013-06-12 | 北京工业大学 | Raman fiber laser based on graphene oxide passive mode-locking |
| CN104597030A (en) * | 2015-01-21 | 2015-05-06 | 杭州电子科技大学 | Hollow core photonic crystal fiber based substance detection device |
| CN104807805A (en) * | 2015-05-04 | 2015-07-29 | 华北电力大学 | Detection device for gas dissolved in transformer oil based on Raman spectrum |
| CN104949920A (en) * | 2015-06-10 | 2015-09-30 | 东北大学 | Reflective gas sensing system based on hollow-core photonic crystal fiber |
| CN105181674A (en) * | 2015-10-21 | 2015-12-23 | 南京工业大学 | Raman spectral enhancement system and enhancement method based on photonic crystal fiber resonant cavity |
| CN106253047A (en) * | 2016-09-13 | 2016-12-21 | 中国人民解放军国防科学技术大学 | Tunable mid-infrared light fibre mixed gas cascade Ramar laser |
| CN106290300A (en) * | 2016-08-04 | 2017-01-04 | 同方威视技术股份有限公司 | Portable raman spectrometer |
| CN106383385A (en) * | 2016-11-23 | 2017-02-08 | 中国人民解放军国防科学技术大学 | All-fiber gas chamber system with gas circulation function and realization method thereof |
| CN106404740A (en) * | 2016-10-11 | 2017-02-15 | 北京信息科技大学 | Raman spectrum liquid detection method based on annular intracavity frequency doubling and hollow-core fiber |
| CN106525810A (en) * | 2016-10-11 | 2017-03-22 | 北京信息科技大学 | Raman spectral liquid detection method based on laser frequency doubling and hollow-core optical fibers |
-
2017
- 2017-11-29 CN CN201711225162.5A patent/CN107796800A/en active Pending
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101285908A (en) * | 2007-04-13 | 2008-10-15 | 中国科学院安徽光学精密机械研究所 | Manufacture method of all-optical fiber heavy pressure gas chamber based on hollow photon crystal optical fibre |
| CN101281134A (en) * | 2008-05-12 | 2008-10-08 | 中国科学院安徽光学精密机械研究所 | Method and device for detecting nanostructured staying quality poison material |
| CN202512262U (en) * | 2012-04-17 | 2012-10-31 | 哈尔滨理工大学 | Pouring device of high-viscosity liquid optical fiber with small core diameter and long liquid core |
| CN103151686A (en) * | 2013-02-22 | 2013-06-12 | 北京工业大学 | Raman fiber laser based on graphene oxide passive mode-locking |
| CN104597030A (en) * | 2015-01-21 | 2015-05-06 | 杭州电子科技大学 | Hollow core photonic crystal fiber based substance detection device |
| CN104807805A (en) * | 2015-05-04 | 2015-07-29 | 华北电力大学 | Detection device for gas dissolved in transformer oil based on Raman spectrum |
| CN104949920A (en) * | 2015-06-10 | 2015-09-30 | 东北大学 | Reflective gas sensing system based on hollow-core photonic crystal fiber |
| CN105181674A (en) * | 2015-10-21 | 2015-12-23 | 南京工业大学 | Raman spectral enhancement system and enhancement method based on photonic crystal fiber resonant cavity |
| CN106290300A (en) * | 2016-08-04 | 2017-01-04 | 同方威视技术股份有限公司 | Portable raman spectrometer |
| CN106253047A (en) * | 2016-09-13 | 2016-12-21 | 中国人民解放军国防科学技术大学 | Tunable mid-infrared light fibre mixed gas cascade Ramar laser |
| CN106404740A (en) * | 2016-10-11 | 2017-02-15 | 北京信息科技大学 | Raman spectrum liquid detection method based on annular intracavity frequency doubling and hollow-core fiber |
| CN106525810A (en) * | 2016-10-11 | 2017-03-22 | 北京信息科技大学 | Raman spectral liquid detection method based on laser frequency doubling and hollow-core optical fibers |
| CN106383385A (en) * | 2016-11-23 | 2017-02-08 | 中国人民解放军国防科学技术大学 | All-fiber gas chamber system with gas circulation function and realization method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108645561A (en) * | 2018-06-01 | 2018-10-12 | 西安西电变压器有限责任公司 | Vacuum degree harvester, vacuum-degree monitoring component and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11274967B2 (en) | Method and apparatus for quantifying solutions comprised of multiple analytes | |
| Myrick et al. | Elimination of background in fiber-optic Raman measurements | |
| CN100470279C (en) | Biosensor of full fiber optic evanescent wave | |
| CN104165853B (en) | A kind of spectrographic method water body environment on-line measurement device | |
| CN102519916B (en) | Method and device for on-line detecting concentration of pesticide | |
| CN104198388B (en) | Online water quality monitoring device based on composite spectrum measurement | |
| CN105973807A (en) | Optical fiber sensing probe for detecting gas and liquid | |
| CN204177736U (en) | The trace gas detection device in chamber is swung based on two-way light decay | |
| CN109350012A (en) | A kind of fluorescent material detection system based on doubly clad optical fiber | |
| DE19624844A1 (en) | Gas partial pressure measuring point in contact with boundary layer of light-conductor, | |
| CN206208755U (en) | Sonde-type refractive index sensing device based on photonic crystal fiber | |
| CN101666747A (en) | Array fibre evanescent wave biosensor system | |
| CN106248602B (en) | Hydrogen sulfide gas sensing device based on fiber F-P interferometer | |
| CN107796800A (en) | A kind of water environment on-Line Monitor Device and method | |
| CN101819139B (en) | On-line gas sensor based on suspending core fiber | |
| CN105372208A (en) | Photonic crystal fiber methane sensor based on sensitive film coating | |
| CN205643150U (en) | COD short -term test appearance | |
| CN207908368U (en) | A kind of water environment on-Line Monitor Device | |
| CN107421942A (en) | Human body respiration object detecting method based on hollow-core photonic crystal fiber and Raman spectrum | |
| CN105675501A (en) | Fluid component analyzer and detection channel arrangement method thereof | |
| CN110530815A (en) | Dissolve CO in seabed based on photonic crystal fiber2Gas detection method and system | |
| Kröckel et al. | Multiscale spectroscopy using a monolithic liquid core waveguide with laterally attached fiber ports | |
| CN206074429U (en) | It is a kind of to be based on photonic crystal resonant cavity technology multichannel optoacoustic spectroscopy intensifier | |
| CN212180619U (en) | Pipeline type full spectrum water quality detection device | |
| Motellier et al. | pH determination of clay interstitial water using a fiber-optic sensor |
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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180313 |