CN106918366A - The system that a kind of block form multi-wavelength many reference amounts are measured simultaneously - Google Patents
The system that a kind of block form multi-wavelength many reference amounts are measured simultaneously Download PDFInfo
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- CN106918366A CN106918366A CN201710246600.XA CN201710246600A CN106918366A CN 106918366 A CN106918366 A CN 106918366A CN 201710246600 A CN201710246600 A CN 201710246600A CN 106918366 A CN106918366 A CN 106918366A
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- optical fibre
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- light source
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- 239000013307 optical fiber Substances 0.000 claims abstract description 58
- 230000003287 optical effect Effects 0.000 claims abstract description 14
- 238000001228 spectrum Methods 0.000 claims abstract description 6
- 238000001514 detection method Methods 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 238000003786 synthesis reaction Methods 0.000 claims description 2
- 239000000835 fiber Substances 0.000 abstract description 17
- 238000005259 measurement Methods 0.000 abstract description 10
- 239000000523 sample Substances 0.000 abstract description 5
- 230000005540 biological transmission Effects 0.000 abstract description 3
- 208000025174 PANDAS Diseases 0.000 abstract description 2
- 208000021155 Paediatric autoimmune neuropsychiatric disorders associated with streptococcal infection Diseases 0.000 abstract description 2
- 240000000220 Panda oleosa Species 0.000 abstract description 2
- 235000016496 Panda oleosa Nutrition 0.000 abstract description 2
- 239000004038 photonic crystal Substances 0.000 abstract description 2
- 238000010276 construction Methods 0.000 abstract 1
- 238000005498 polishing Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000010287 polarization Effects 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000012681 fiber drawing Methods 0.000 description 1
- 238000007306 functionalization reaction Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000001902 propagating effect Effects 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 238000004611 spectroscopical analysis Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
- G01D5/32—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light
- G01D5/34—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells
- G01D5/353—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre
- G01D5/35383—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre using multiple sensor devices using multiplexing techniques
- G01D5/35387—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre using multiple sensor devices using multiplexing techniques using wavelength division multiplexing
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The invention discloses the system that a kind of block form multi-wavelength many reference amounts are measured simultaneously, belong to Fibre Optical Sensor, photoelectronic instrumentation field.In experimentation, the change of extraneous parameter is received by sensitive optical fibre, can from the change of spectrometer polishing wax come it is counter push away sensitive optical fibre surrounding environment in parameter change so that the purpose that experiment parameter is measured.Different types of sensitive optical fibre is selected as sensing probe according to different parameter measurements in experiment, such as surveying stress can use panda optic fibre, such as temperature survey can use Fiber Bragg Grating FBG, such as survey the photonic crystal fiber that solution refractive index can spend the special construction of switch layer.The measurement of parameter can directly read the value of extraneous parameter according to the spectrum contrast on the spectrum of specific sensitive optical fibre and the matched curve of parameter, with spectrometer.Due to multichannel light simultaneous transmission can be realized with wavelength division multiplexer, therefore can realize being measured while many reference amounts.
Description
Technical field
The system that multi-wavelength many reference amounts are measured simultaneously is realized the present invention relates to a kind of, belongs to photoelectron, laser and automation
Field of measuring technique.
Background technology
1966, Kun high proposed the concept of optical fiber first, takes the lead in drawing out loss to Corning Incorporated in 1970 and exists
The optical fiber of 20dB so that optical fiber turns into widely known and in multi-field wide variety of transmission medium.Along with fiber optic communication skill
The development of art, it was recognized that optical fiber acts not only as the propagation medium of light wave, and light wave when propagating in a fiber, light wave
The characteristic parameter such as amplitude, phase, polarization state, wavelength can with temperature, pressure, magnetic field, electric field, displacement, rotation etc. it is extraneous because
The effect of element and directly or indirectly change, thus just can be leading in extraneous effect and optical fiber without any intergrade
Light property is associated, and can detect various physical quantitys as a kind of new sensing element.Optical fiber sensing technology be using it is extraneous because
The change of the parameter such as light intensity, phase, polarization state and wavelength when element makes light propagate in a fiber, so that factor is detected to external world
With the technology of signal transmission.With the continuous improvement of fiber-drawing techniques, Fibre Optical Sensor is rapidly applied to spacecraft, biological
Medical science, geodynamics, chemical detection, civil engineering and the multiple fields such as military monitoring and warning technology.Joining multi-wavelength more
Measuring system can be such that Fibre Optical Sensor is preferably applied in the production and living of people to amount simultaneously.
The appearance of wideband light source and highly sensitive detector serves great impetus to optical fiber sensing technology.
, from simplest thang-kng to realizing optical-fibre communications, again to Fibre Optical Sensor, the effect of optical fiber is towards variation, the side of functionalization for optical fiber
To development.Common Fibre Optical Sensor has a lot.For example, doing stress sensing with panda optic fibre, TEMP is done with fiber grating, used
Special photonic crystal fiber does the measurement of liquid refractivity.Many reference amounts multi-wavelength measuring system is by different optical fiber sensing probes
Measured while combining realization multiple parameter.Multi-wavelength multiparameter system is exactly to realize Fibre Optical Sensor multifunction, system
Change, the system of automation.
Multi-parameter measurement system, successfully avoids many reference amounts cross sensitivity and common Fibre Optical Sensor parameter measurement list
One problem, and Fibre Optical Sensor is realized into systematization, integrated, automation.The range of application of sensor has been widened, can be with root
The need for specific, corresponding sensor is cascaded.The sensing technology of systematization so that sensing accuracy is greatly improved.After cascade
Sensor is connected with spectroanalysis instrument and computer.The Automated condtrol of parameter can be realized.
The content of the invention
It is single it is an object of the invention to solve sensor measurement parameters, and avoid many reference amounts cross sensitivity and parameter
Measurement is not intelligent enough, the problem of automation.Many reference amounts are detected and fed back in real time in sensing detection there is provided one kind
System, realize and real-time Aulomatizeted Detect measured to many reference amounts.The system is using wavelength division multiplexer (WDM) sensing light path point
Into multichannel, and it is connected with computer, realizes many reference amounts and measure simultaneously and can be with far distance automatic detection and feedback, finally
Reach the purpose of automation remote monitor many reference amounts.Present system can also realize that multichannel light path is examined simultaneously to same parameter
Survey, so as to greatly improve the degree of accuracy and the speed of Parametric Detection.
To achieve these goals, this invention takes following technical scheme：
The real-time automated detection system of many reference amounts includes the first wideband light source (1), the second wideband light source (2), a WDM
(3), the 2nd WDM (7), the 3rd WDM (10), the 4th WDM (12), spectroanalysis instrument (4), computer (5), three-dB coupler (6),
First sensitive optical fibre (8), the second sensitive optical fibre (9), the 3rd sensitive optical fibre (11), the 4th sensitive optical fibre (13).
First wideband light source (1) and the second wideband light source (2) are arranged in parallel, the first wideband light source (1) and the second broadband light
Source (2) is connected with a WDM (3), and the first wideband light source (1), the second wideband light source (2) and a WDM (3) constitute wavelength-division and answer
Process；First WDM (3) connects the 2nd WDM (7) and the 3rd WDM (10), the 2nd WDM (7) and the by three-dB coupler (6)
Three WDM (10) are coordination, and three-dB coupler (6) is connected with the 2nd WDM (7), the first sensitive optical fibre (8) and the second sensitive light
Fine (9) are connected on the 2nd WDM (7) by way of parallel connection；3rd WDM (10) and the 3rd sensitive optical fibre (11) are connected, and the 3rd
WDM (10) and the 4th WDM (12) is connected, and the 4th WDM (12) and the 4th sensitive optical fibre (13) are connected, n-th WDM connections N-1
Individual WDM, n-th WDM connect n-th sensitive optical fibre, and N takes positive integer.Three-dB coupler (6) is by the 2nd WDM (7) and the 3rd WDM
(10) the incoming spectroanalysis instrument of the spectrum (4) of coming is returned in；Spectroanalysis instrument (4) is connected with computer (5)；
The number N of connected sensitive optical fibre all according to needed for determine by the parameter of detection after the number N and WDM of the WDM of connection
It is fixed.
Species according to sensitive optical fibre accesses different light sources.
User, also can be by computer (5) by the situation around the optical spectroscopy sensitive optical fibre on spectroanalysis instrument (4)
On the parameter of the value of extraneous parameter that shows to being monitored have and intuitively show.
Light is emitted from the first wideband light source (1) and the second wideband light source (2), into a WDM (3) and then through 3dB
Coupler (6) is passed to next 2nd WDM (7), by WDM be divided into two-way with respectively with required the first sensitive optical fibre (8)
Reflected by one end of sensitive optical fibre with the second sensitive optical fibre (9) light, passed through three-dB coupler again all the way by WDM synthesis
To spectroanalysis instrument (4), most the incoming computer of spectrum (5) constitutes sensor automatically-monitored in real time at last.According to actual feelings
Other end cascade multiple WDM the need for condition in three-dB coupler (6) is acting on forming multichannel by the light splitting of WDM, and connection is multiple
Sensitive optical fibre, realizes that many reference amounts are measured simultaneously.
First wideband light source (1) and the second wideband light source (2) are arranged in parallel, and can according to actual needs select identical central
The wideband light source of wavelength transmits the intensity of optical signal to improve.Or the different wideband light source of Selection Center wavelength is matching not
With the sensitive band corresponding to sensitive optical fibre.Also it is coordination between the latter linked sensitive optical fibre of WDM.The class of sensitive optical fibre
Type and the sensitive parameter of measurement need to be chosen and connect according to actual conditions.
The present invention can obtain following beneficial effect：
The present invention completes Fibre Optical Sensor and is combined with self-reacting device, can be with where real-time detection and feedback sensitive optical fiber
Environment parameter change, and value of consult volume is analyzed, can send safety alarm beyond the safe range for setting.Simultaneously can be with
Demand according to actual environment changes sensitive optical fibre, is measured while realization to many reference amounts.Because sensitive optical fibre probe is various, because
This, the measurement parameters of this system are equally flexible and changeable.This system aims to provide one kind and realizes multichannel light simultaneous transmission and do not do mutually
The system architecture disturbed, connects different sensitive optical fibre probes according to actual needs, and being connected with computer, realization is real-time to parameter
Automated detection system.
Brief description of the drawings
Fig. 1 many reference amounts real-time detecting system principle assumption diagrams.
Fig. 2 is the schematic diagram of apparatus system.
In figure：1st, the first wideband light source, the 2, second wideband light source, the 3, the first WDM, the 7, the 2nd WDM, the 10, the 3rd WDM, 12,
4th WDM, 4, spectroanalysis instrument, 5, computer, 6, three-dB coupler, the 8, first sensitive optical fibre, the 9, second sensitive optical fibre, 11,
Three sensitive optical fibres, the 13, the 4th sensitive optical fibre.
Specific embodiment
With reference to Fig. 1, the invention will be further described：
This many reference amounts real-time remote automatic monitoring system has two parts to constitute.One is sensitive optical fibre sensing external environment
Change, another part is whether computer reads and judge detected parameter in safe range.
As shown in figure 1, the system selects suitable WDM (3,7,10,12) according to the scope and quantity of the parameter that need to be measured
Number determine schematic diagram, this is the key of the systematic survey.According to actual conditions, the different sensitive optical fibres probe of selection (8,
9th, 11 the change of the corresponding reference quantity of detected environment, 13) is sensed, this part is the critically important part of sensor measuring.Light
Source (1,2) will match with sensitive optical fibre (8,9,11,13), if it is desired, can connect multiple light sources.What sensitive optical fibre was passed back
Light wave is input to computer (5) with the fit correlation for surveying parameter, then compiles the light-wave information conversion that a program will be input into
Into parameter value, if parameter exceedes the safe range of setting, alarm will be sent.Surveyed in real time so as to reach many reference amounts automation
Amount and the purpose of monitoring.Finally according to identified schematic diagram various pieces are connected with optical fiber.
This multi-parameter measurement system can also make miniaturization many reference amounts measuring instrumentss, for measuring at any time on the spot.
Claims (4)
1. the system that a kind of block form multi-wavelength many reference amounts are measured simultaneously, it is characterised in that：System includes the first wideband light source
(1), the second wideband light source (2), a WDM (3), the 2nd WDM (7), the 3rd WDM (10), the 4th WDM (12), spectroanalysis instrument
(4), computer (5), three-dB coupler (6), the first sensitive optical fibre (8), the second sensitive optical fibre (9), the 3rd sensitive optical fibre (11),
4th sensitive optical fibre (13)；
First wideband light source (1) and the second wideband light source (2) are arranged in parallel, the first wideband light source (1) and the second wideband light source (2)
It is connected with a WDM (3), the first wideband light source (1), the second wideband light source (2) and a WDM (3) constitute wavelength-division multiplex
Process；First WDM (3) connects the 2nd WDM (7) and the 3rd WDM (10), the 2nd WDM (7) and the 3rd by three-dB coupler (6)
WDM (10) is coordination, and three-dB coupler (6) is connected with the 2nd WDM (7), the first sensitive optical fibre (8) and the second sensitive optical fibre
(9) it is connected on the 2nd WDM (7) by way of parallel connection；3rd WDM (10) and the 3rd sensitive optical fibre (11) are connected, the 3rd WDM
(10) connected with the 4th WDM (12), the 4th WDM (12) and the 4th sensitive optical fibre (13) are connected, n-th WDM connections N-1
WDM, n-th WDM connect n-th sensitive optical fibre, and N takes positive integer；Three-dB coupler (6) is by the 2nd WDM (7) and the 3rd WDM (10)
The incoming spectroanalysis instrument of the spectrum (4) that middle return comes；Spectroanalysis instrument (4) is connected with computer (5).
2. the system that a kind of block form multi-wavelength many reference amounts according to claim 1 are measured simultaneously, it is characterised in that：Connection
WDM number N and WDM after connected sensitive optical fibre number N all according to needed for detection parameter determine.
3. the system that a kind of block form multi-wavelength many reference amounts according to claim 1 are measured simultaneously, it is characterised in that：According to
The species of sensitive optical fibre accesses different light sources.
4. the system that a kind of block form multi-wavelength many reference amounts according to claim 1 are measured simultaneously, it is characterised in that：Light from
First wideband light source (1) and the second wideband light source (2) are emitted, into a WDM (3) and then incoming through three-dB coupler (6)
To next 2nd WDM (7), by WDM be divided into two-way with respectively with required the first sensitive optical fibre (8) and the second sensitive optical fibre
(9) light is reflected by one end of sensitive optical fibre, and spectroanalysis instrument is passed to through three-dB coupler again all the way by WDM synthesis
(4), most the incoming computer of spectrum (5) constitutes sensor automatically-monitored in real time at last；According to the need for actual conditions in 3dB
The other end cascade multiple WDM of coupler (6) is being acted on forming multichannel by the light splitting of WDM, and the multiple sensitive optical fibres of connection are realized
Many reference amounts are measured simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710246600.XA CN106918366A (en) | 2017-04-16 | 2017-04-16 | The system that a kind of block form multi-wavelength many reference amounts are measured simultaneously |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710246600.XA CN106918366A (en) | 2017-04-16 | 2017-04-16 | The system that a kind of block form multi-wavelength many reference amounts are measured simultaneously |
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| Publication Number | Publication Date |
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| CN106918366A true CN106918366A (en) | 2017-07-04 |
Family
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| CN201710246600.XA Pending CN106918366A (en) | 2017-04-16 | 2017-04-16 | The system that a kind of block form multi-wavelength many reference amounts are measured simultaneously |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108303135A (en) * | 2017-12-26 | 2018-07-20 | 成都鼎信致远科技有限公司 | A kind of novel sensor |
| CN108414031A (en) * | 2018-06-11 | 2018-08-17 | 中国计量大学 | A kind of mid-infrared light fiber sensor that many reference amounts measure |
| CN108507662A (en) * | 2018-03-14 | 2018-09-07 | 中国人民解放军国防科技大学 | Optical fiber distributed sensing method and device based on multi-wavelength double-optical pulse |
| CN109000712A (en) * | 2018-05-24 | 2018-12-14 | 国网山东省电力公司济南供电公司 | Cable tunnel multi-parameter distributed fiber-optic sensor measuring device and measuring method |
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