CN206146438U - Fiber grating data demodulalation system - Google Patents
Fiber grating data demodulalation system Download PDFInfo
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- CN206146438U CN206146438U CN201620956023.4U CN201620956023U CN206146438U CN 206146438 U CN206146438 U CN 206146438U CN 201620956023 U CN201620956023 U CN 201620956023U CN 206146438 U CN206146438 U CN 206146438U
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Abstract
The utility model relates to a fiber grating sensing technology field particularly, has disclosed a fiber grating data demodulalation system. Fiber grating data demodulalation system, its characterized in that is including fiber grating demodulation appearance 1 for the collection and the conversion of photosignal obtain the wavelength data, fiber grating data demodulation analysis appearance 2, according to wavelength data operation reachs the actual physical quantity of corresponding sensor location department. The utility model discloses the fiber grating data demodulalation system who discloses not only can obtain the wavelength data, and it is corresponding to go back position and actual physical quantity that accessible and sensor arranged, and modes such as operation, generating data statement or curve are carried out to corresponding algorithm or the data of autocall, and the user of being convenient for carries out data analysis, has reduced artifical calibration operation volume, is favorable to improving work efficiency and reduces human error, promotes user experience.
Description
Technical field
The utility model is related to fiber grating sensing technology field, specifically, discloses a kind of fiber grating data solution
Adjusting system.
Background technology
Fiber-optic grating sensor has no chance device as optical fiber, with sensing and transmitting dual-use function, does not receive in measurement process
The interference of the factors such as light source fluctuating, fibre-optical bending, in signals transmission receive electromagnetic interference, measurement good stability the features such as,
It has been widely used in the fields such as electric power, mining industry, petrochemical industry, building, bridge, Aero-Space.
The operation principle of fiber-optic grating sensor is：The reflection of fiber grating or the centre wavelength of projection spectrum are by the external world
Physical quantity (temperature, strain, pressure etc.) can change when acting on, and the variable quantity of wavelength has the pass of determination with external physical quantity
System, therefore data demodulation is one of core technology of fiber grating sensing system application.At present, fiber grating demodulation technology is commonly used
Method have：Tunable F-P filter methods, diffraction grating light splitting, optical fiber M-Z interferometric methods, ccd array probe method etc..
Existing fiber grating data demodulating system, can only obtain wavelength data, it is impossible to the position of sensor arrangement and
Real physical is corresponding, and user to take needed after data carries out a large amount of artificial proving operations, and cumbersome, efficiency is low, there is people
For error, Consumer's Experience is poor.
Utility model content
To solve above-mentioned technical problem, the utility model proposes a kind of fiber grating data demodulating system, its feature exists
In, including fiber Bragg grating (FBG) demodulator 1, for the collection and conversion of photosignal, obtain wavelength data；Fiber grating data are demodulated
Analyzer 2, the real physical at respective sensor position is drawn according to the wavelength data computing.
Preferably, in the fiber grating data demodulating system, the fiber Bragg grating (FBG) demodulator 1 includes wideband light source
11st, light path system, circuit system and FBG optical fiber optocouplers sensor 18.
Preferably, in the fiber grating data demodulating system, the light path system includes F-P wave filters 14, isolation
Device 12 and coupler 13.
Preferably, in the fiber grating data demodulating system, the circuit system includes that F-P wave filters drive scanning
Circuit 15, photoelectric conversion amplifier 16 and arm processor 17.
Preferably, in the fiber grating data demodulating system, the fiber grating data demodulation analysis instrument 2 includes number
According to acquisition module 21, data demodulation analysis module 22, data memory module 23 and data disaply moudle 24.
Preferably, in the fiber grating data demodulating system, the data acquisition module 21 passes through serial ports RS232/
485 communicate with fiber grating data (FBG) demodulator 1, obtain the wavelength data of each channel sensor for collecting.
Preferably, in the fiber grating data demodulating system, 22 demodulation analysis of the data demodulation analysis module are each
The physical quantity of channel wavelength data, spectroscopic data and customization.
Preferably, in the fiber grating data demodulating system, the data memory module 23 is by each sensor
Passage, position, wavelength, real physical are stored in database.
Preferably, in the fiber grating data demodulating system, the data disaply moudle 24 is by each channel wavelength, light
Modal data and the physical quantity of customization present to user by the form of data, curve, form.
Preferably, in the fiber grating data demodulating system, the physical quantity includes temperature, strain or displacement.
Fiber grating data demodulating system disclosed by the utility model compared with prior art, it is a technical advantage that：
(1) this fiber grating data demodulating system is applied widely and flexible, be for example applicable to temperature, strain,
Polytype fiber-optic grating sensor such as pressure, displacement, for the computing formula of different sensors, realizes that high-order moment is public
The editor of formula and computing；
(2) this fiber grating data demodulating system can demodulate the real physical of each sensor, and and installation site
It is corresponding；
(3) this fiber grating data demodulating system wavelength resolution and repeatability are high, stable and reliable operation, picking rate
Hurry up, maintenance is installed simply.
Description of the drawings
Fig. 1 is the schematic block diagram of the fiber grating data demodulating system in the utility model embodiment, wherein：
Fiber Bragg grating (FBG) demodulator -1, wideband light source -11, isolator -12, coupler -13, FP wave filters -14, FP wave filters
Scan drive circuit -15, photoelectric conversion amplifier -16, arm processor -17, FBG optical fiber optocouplers sensor -18；
Fiber grating data demodulation analysis instrument -2, data acquisition module -21, data demodulation analysis module -22, data storage
Module -23, data disaply moudle -24.
Specific embodiment
Fiber grating data demodulating system described in the utility model is done further in detail with reference to specific embodiment
Illustrate, but protection domain of the present utility model is not limited to this.
Fig. 1 is the schematic block diagram of the fiber grating data demodulating system in the utility model embodiment.
As shown in fig. 1, the fiber grating data demodulating system in the present embodiment mainly includes the He of fiber Bragg grating (FBG) demodulator 1
The two parts of fiber grating data demodulation analysis instrument 2.The fiber Bragg grating (FBG) demodulator 1 is used for the collection and conversion of photosignal, obtains
To wavelength data；The fiber grating data demodulation analysis instrument 2 is used to draw respective sensor position according to wavelength data computing
The real physical at place.
The fiber Bragg grating (FBG) demodulator 1 includes wideband light source 11, light path system, circuit system and FBG optical fiber optocoupler sensing
Device 18.The light path system includes F-P wave filters 14, isolator 12 and coupler 13.The circuit system includes F-P wave filters
Drive scanning circuit 15, photoelectric conversion amplifier 16, arm processor 17.
The fiber grating data demodulation analysis instrument 2 includes data acquisition module 21, data demodulation analysis module 22, data
Memory module 23 and data disaply moudle 24.
The concrete operating principle of above-mentioned fiber grating data demodulating system is as follows：
The light that wideband light source 11 sends enters coupler 13 through isolator 12, and then injects FBG optical fiber optocoupler sensors
18, in the presence of extraneous physical change, the reflected signal of FBG optical fiber optocouplers sensor 18 shifts, and reflected signal is passed through
Coupler 13 enters F-P wave filters 14, FBG optical fiber optocoupler of the F-P wave filters 14 in the presence of driving voltage to reflecting
The lightwave signal of sensor 18 enters an actor's rendering of an operatic tune long scan.When the wavelength and F-P wave filters 14 of the back wave of FBG optical fiber optocouplers sensor 18
Transmission peak wavelength it is consistent when, photoelectric conversion amplifier 16 may detect largest light intensity, and by the faint light letter for detecting
Number conversion is enlarged into electric signal, and by A/D collections arm processor 17 is entered, arm processor 17 by peak-seeking algorithm extract with
The corresponding F-P wave filter driving voltages of peak-peak, because driving voltage is obtained with transmission peak wavelength near-linear dependency
Reflection wavelength.
The wavelength value for obtaining is passed to fiber grating data demodulation analysis instrument 2 by arm processor 17 by RS232/485.Light
Fine raster data demodulation analysis instrument 2 is realized being communicated with arm processor 17 by data acquisition module 21, obtains fiber grating demodulation
The wavelength data of FBG optical fiber optocouplers sensor 18 of each defeated passage on instrument 1, data demodulation analysis module 22 calls each to install
Algorithm, type, amendment sensor, amendment sensor type, characteristic wavelength, correction coefficient of the corresponding FBG in position etc.,
The real physical of correspondence installation site sensor is obtained, data disaply moudle 24 is by each channel wavelength, spectroscopic data and determines
The physical quantity (for example, temperature, strain, displacement etc.) of system presents to user by the form of data, curve and form, while data
Memory module 23 is stored in database real time data (for example, the passage of sensor, position, wavelength, real physical etc.), convenient
User extracts historical data and carries out the statistical analysis of related data.
In sum, by the fiber grating data demodulating system in the present embodiment, wavelength data is can not only obtain, also
Corresponding algorithm or data can be automatically called to carry out at computing by corresponding with the position of sensor arrangement and real physical
Reason, generates the mode such as data sheet or curve map, is easy to user to carry out data analysis, reduces artificial staking-out work amount, favorably
In improving operating efficiency and reducing human error, Consumer's Experience is lifted.
It is understood that embodiment of above be merely to illustrate that principle of the present utility model and adopt it is exemplary
Embodiment, but the utility model is not limited thereto.For those skilled in the art, without departing from this
In the case of the spirit and essence of utility model, various modifications and improvement can be made, these modifications and improvement are also considered as this reality
With new protection domain.
Claims (1)
1. a kind of fiber grating data demodulating system, it is characterised in that including fiber Bragg grating (FBG) demodulator (1), for photosignal
Collection and conversion, obtain wavelength data；Fiber grating data demodulation analysis instrument (2), draws according to the wavelength data computing
Real physical at respective sensor position；
The fiber Bragg grating (FBG) demodulator (1) senses including wideband light source (11), light path system, circuit system and FBG optical fiber optocoupler
Device (18)；
The light path system includes F-P wave filters (14), isolator (12) and coupler (13)；
The circuit system includes that F-P wave filters drive scanning circuit (15), photoelectric conversion amplifier (16) and arm processor
(17)；
The fiber grating data demodulation analysis instrument (2) includes data acquisition module (21), data demodulation analysis module (22), number
According to memory module (23) and data disaply moudle (24)；
The data acquisition module (21) is communicated by serial ports RS232/485 and fiber grating data (FBG) demodulator (1), obtains collection
The wavelength data of each channel sensor for arriving；
The physical quantity of each channel wavelength data of data demodulation analysis module (22) demodulation analysis, spectroscopic data and customization；
The data memory module (23) is stored in the passage of each sensor, position, wavelength, real physical in database；
The physical quantity of each channel wavelength, spectroscopic data and customization is passed through data, curve, report by the data disaply moudle (24)
The form of table presents to user；
The physical quantity includes temperature, strain or displacement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620956023.4U CN206146438U (en) | 2016-08-26 | 2016-08-26 | Fiber grating data demodulalation system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620956023.4U CN206146438U (en) | 2016-08-26 | 2016-08-26 | Fiber grating data demodulalation system |
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| Publication Number | Publication Date |
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| CN206146438U true CN206146438U (en) | 2017-05-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620956023.4U Expired - Fee Related CN206146438U (en) | 2016-08-26 | 2016-08-26 | Fiber grating data demodulalation system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108680193A (en) * | 2018-04-18 | 2018-10-19 | 中山水木光华电子信息科技有限公司 | A kind of optical fiber code recognition methods based on light splitting matrix demodulation |
| CN111649784A (en) * | 2020-07-13 | 2020-09-11 | 中铁第一勘察设计院集团有限公司 | Structure monitoring method and system based on linear sensor |
-
2016
- 2016-08-26 CN CN201620956023.4U patent/CN206146438U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108680193A (en) * | 2018-04-18 | 2018-10-19 | 中山水木光华电子信息科技有限公司 | A kind of optical fiber code recognition methods based on light splitting matrix demodulation |
| CN111649784A (en) * | 2020-07-13 | 2020-09-11 | 中铁第一勘察设计院集团有限公司 | Structure monitoring method and system based on linear sensor |
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| CF01 | Termination of patent right due to non-payment of annual fee |
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| CF01 | Termination of patent right due to non-payment of annual fee |