CN205898163U - Fiber grating demodulating equipment - Google Patents
Fiber grating demodulating equipment Download PDFInfo
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- CN205898163U CN205898163U CN201620513221.3U CN201620513221U CN205898163U CN 205898163 U CN205898163 U CN 205898163U CN 201620513221 U CN201620513221 U CN 201620513221U CN 205898163 U CN205898163 U CN 205898163U
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Abstract
The utility model discloses a fiber grating demodulating equipment belongs to optic fibre demodulation field, a fiber grating demodulating equipment, include: data demodulating equipment, signal conditioning device, data acquisition device, data calculation device and data display device, the data demodulating equipment respectively with signal conditioning device with the data acquisition device is connected, signal conditioning device still with the data acquisition device is connected, the data calculation device respectively with the data acquisition device with data display device connects. Through setting up data demodulating equipment, signal conditioning device, data acquisition device and data calculation device, improved fiber grating demodulating equipment's accuracy and accuracy, reduced the condition that receives external interference data distortion to appear in the transmission course, reduced error range, better assurance the authenticity of data, situation that better reaction measurand was located.
Description
Technical field
The utility model is related to fiber grating demodulation field, in particular to a kind of fiber grating demodulation device.
Background technology
At present, fiber grating field of sensing technologies apply more and more extensive, compared with other class sensors, optical fiber light
Gate sensor has the features such as electromagnetism interference, anticorrosive, good reliability.In addition, fiber grating can be by extraneous strain
Signal, such as: stress signal, strain signal, vibration signal, temperature change signal, its Wavelength-encoding characteristic and its reusability are more
Be other type sensors incomparable, therefore, the Wavelength-encoding signal of fiber grating is demodulated playing to closing weight
The effect wanted.
In correlation technique, fiber Bragg grating (FBG) demodulator demodulates drive signal by demodulating data unit, transmits to computer
Calculated in equipment, calculated extraneous strain signal.
In actual mechanical process, because the environment in tunnel is complicated and changeable, the data drive signal demodulating is in transmission
During interfered by outside it is possible that the situation of distortion, make acquisition demodulating data inaccurate it is impossible to give people in time
The accurate Monitoring Data of offer.
Utility model content
The purpose of this utility model is to provide a kind of fiber grating demodulation device, to improve fiber grating demodulation device
Accuracy and accuracy, decrease the situation that data distortion occurs interfered by outside in transmitting procedure, reduce error
Scope, preferably ensure that the authenticity of data, preferably the situation residing for reaction measurand.
In a first aspect, the utility model embodiment provides a kind of fiber grating demodulation device, comprising: data demodulation dress
Put, signal regulating device, data acquisition unit, data computing device data display device；
Described data demodulating device is connected with described signal regulating device and described data acquisition unit respectively；
Described signal regulating device is also connected with described data acquisition unit, described data computing device respectively with described number
Connect according to harvester and described data presentation device.
In conjunction with a first aspect, the utility model embodiment provides the first possible implementation of first aspect, its
In, described data demodulating device includes: wideband light source, tunable optic filter, fiber coupler, fiber-optic grating sensor, photoelectricity
Detector；
Described tunable optic filter is respectively with described wideband light source, described fiber coupler and described data acquisition unit even
Connect；
Described fiber-optic grating sensor is connected with described fiber coupler and described photodetector respectively；
Described photodetector is also connected with described signal regulating device.
In conjunction with a first aspect, the utility model embodiment provides the possible implementation of second of first aspect, its
In, described signal regulating device includes: signal receiver, signal conditioning circuit and signal projector；
Described signal conditioning circuit is connected with described signal receiver and described signal projector respectively.
In conjunction with a first aspect, the utility model embodiment provides the third possible implementation of first aspect, its
In, described fiber grating demodulation device also includes: stand-by power supply；
Described stand-by power supply is filled with described data demodulating device, described signal regulating device, described data acquisition respectively
Put, described data computing device and described data presentation device connect.
In conjunction with a first aspect, the utility model embodiment provides the 4th kind of possible implementation of first aspect, its
In, described fiber coupler adopts 4 passage couplers, 8 passage couplers, 16 passage couplers or 32 passage couplers.
In conjunction with a first aspect, the utility model embodiment provides the 5th kind of possible implementation of first aspect, its
In, described fiber coupler is x shape, y shape, star and tree-like.
In conjunction with a first aspect, the utility model embodiment provides the 6th kind of possible implementation of first aspect, its
In, it is provided with shielding casing outside described fiber grating solution device.
In conjunction with a first aspect, the utility model embodiment provides the 7th kind of possible implementation of first aspect, its
In, described data presentation device is led display.
In conjunction with a first aspect, the utility model embodiment provides the 8th kind of possible implementation of first aspect, its
In, described fiber-optic grating sensor is anchor sensor.
In conjunction with a first aspect, the utility model embodiment provides the 9th kind of possible implementation of first aspect, its
In, described anchor sensor group includes multiple anchor sensors；
Described anchor sensor includes: fiber grating, intermediate layer, anchor rod body；
Described fiber grating is arranged on the center position of described anchor rod body, described anchor rod body and described fiber grating
Connected by described intermediate layer.
A kind of fiber grating demodulation device that the utility model embodiment provides, by arranging data demodulating device, signal
Conditioning device, data acquisition unit data computing device, improve accuracy and the accuracy of fiber grating demodulation device, subtract
Lack the situation that data distortion occurs interfered by outside in transmitting procedure, reduced error range, preferably ensure that number
According to authenticity, the preferably situation residing for reaction measurand.
For enabling above-mentioned purpose of the present utility model, feature and advantage to become apparent, preferred embodiment cited below particularly, and
Accompanying drawing appended by cooperation, is described in detail below.
Brief description
In order to be illustrated more clearly that the technical scheme of the utility model embodiment, below will be to use required in embodiment
Accompanying drawing be briefly described it will be appreciated that the following drawings illustrate only some embodiments of the present utility model, therefore should be by
Regard the restriction to scope as, for those of ordinary skill in the art, on the premise of not paying creative work, also may be used
To obtain other related accompanying drawings according to these accompanying drawings.
Fig. 1 shows a kind of structural representation of fiber grating demodulation device that the utility model embodiment is provided；
In accompanying drawing 1, the list of parts representated by each label is as follows:
10: data demodulating device, 11: wideband light source,
12: tunable optic filter, 13: fiber coupler,
14: fiber-optic grating sensor, 15: photodetector,
16: signal regulating device, 17: data acquisition unit,
18: data computing device, 19: data presentation device,
20: stand-by power supply.
Specific embodiment
Below in conjunction with accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out clearly
Chu, it is fully described by it is clear that described embodiment is only a part of embodiment of the utility model, rather than whole realities
Apply example.The assembly of the utility model embodiment generally described and illustrated in accompanying drawing herein can be come with various different configurations
Arrangement and design.Therefore, below the detailed description of the embodiment of the present utility model providing in the accompanying drawings is not intended to limit
Claimed scope of the present utility model, but it is merely representative of selected embodiment of the present utility model.Based on the utility model
Embodiment, the every other embodiment that those skilled in the art are obtained on the premise of not making creative work, all
Belong to the scope of the utility model protection.
In description of the present utility model, " " center ", " on ", D score, "left", "right", " perpendicular it should be noted that term
Directly ", the orientation of instruction such as " level ", " interior ", " outward " or position relationship are based on orientation shown in the drawings or position relationship, are only
For the ease of describe of the present utility model simplify description, rather than instruction or the hint device of indication or element must have specific
Orientation, with specific azimuth configuration and operation, therefore it is not intended that to restriction of the present utility model.Additionally, term " the
One ", " second ", " the 3rd " are only used for describing purpose, and it is not intended that indicating or hint relative importance.Wherein, term "
One position " is two different positions with " second place ".
In description of the present utility model, it should be noted that unless otherwise clearly defined and limited, term " peace
Dress ", " being connected ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or integratedly
Connect；Can be to be mechanically connected or electrically connect；Can be to be joined directly together it is also possible to be indirectly connected to by intermediary,
It can be the connection of two element internals.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition
Concrete meaning in the utility model for the language.
In view of in correlation technique, fiber Bragg grating (FBG) demodulator demodulates drive signal by demodulating data unit, transmit to
Calculated in computer equipment, calculated extraneous strain signal.In actual mechanical process, because the environment in tunnel is complicated
Changeable, the data drive signal that demodulates in transmitting procedure interfered by outside it is possible that the situation of distortion, make acquisition
Demodulating data inaccurate it is impossible to give people timely to provide accurate Monitoring Data.Based on this, the utility model embodiment carries
Supply a kind of fiber grating demodulation device, be described below by embodiment.
Embodiment
In order to obtain more accurate demodulating data, and the data after demodulation is resolved and is shown.Referring to Fig. 1, this
Embodiment provides a kind of fiber grating demodulation device, comprising: data demodulating device 10, signal regulating device 16, data acquisition dress
Put 17, data computing device 18 data display device 19；
Data demodulating device 10 is connected with signal regulating device 16 data harvester 17 respectively；
Signal regulating device 16 is also connected with data acquisition unit 17, data computing device 18 respectively with data acquisition unit
17 data display devices 19 connect；
Data demodulating device 10, for detecting demodulated signal and the demodulating data detecting being transferred to signal regulating device
16；
Signal regulating device 16, the demodulating data for detecting to the data demodulating device 10 receiving is amplified locating
Reason；
After data acquisition unit 17, the demodulating data for gathered data demodulating equipment 10 and signal regulating device 16 amplify
Demodulating data, and by the data transfer collecting to data computing device 18；
Data computing device 18, for the data that receiving data demodulating equipment 10 data harvester 17 sends respectively,
And the data receiving is resolved；
Data presentation device 19, the data calculating for display data computing device 18.
In order to be demodulated to the measurement data of fiber-optic grating sensor 14.The present embodiment provides a kind of fiber grating demodulation
Device, data demodulating device 10 includes: wideband light source 11, tunable optic filter 12, fiber coupler 13, fiber-optic grating sensor
14th, photodetector 15；
Tunable optic filter 12 is connected with wideband light source 11, fiber coupler 13 data harvester 17 respectively；
Fiber-optic grating sensor is connected with fiber coupler and photodetector 15 respectively；
Photodetector 15 is also connected with signal regulating device 16；
Wideband light source 11, for sending broadband light to tunable optic filter 12；
Tunable optic filter 12, for the broadband light of input is converted into narrow-linewidth laser, and narrow-linewidth laser is exported
To fiber coupler；
Fiber coupler 13, for being coupled and being reallocated the optical signal in transmission in coupled zone；
Fiber-optic grating sensor 14, the narrow-linewidth laser for being inputted according to tunable optic filter 12 forms reflectance spectrum；
Photodetector 15, the reflectance spectrum being formed for real-time detection fiber grating, and reflectance spectrum is transmitted to signal tune
Reason device 16.
By above example as can be seen that wideband light source 11 sends broadband light to tunable optic filter 12, through tunable
Wave filter 12 demodulates, and the narrow band light producing different centre wavelengths is led to, after through the light splitting of multiple fiber coupler 13, fiber coupler
13 can separate multiple light paths, and its reflected light carries out opto-electronic conversion by photodetector 15, thus obtaining reflectance spectrum, by reflectance spectrum
Send to signal regulating device 16.
In order to data demodulating device 10 is sent signal nurse one's health.The present embodiment provides a kind of fiber grating demodulation
Device, signal regulating device 16 includes: signal receiver, signal conditioning circuit and signal projector；
Signal conditioning circuit is connected with signal receiver and signal projector respectively；
Signal receiver, the demodulating data detecting for receiving data demodulating equipment 10, and by the demodulation receiving number
According to being sent to signal conditioning circuit；
Signal conditioning circuit, for conditioned signal receiver send demodulated signal, and by conditioning after demodulating data warp
Cross signal projector and be sent to data acquisition unit 17.
By above example as can be seen that signal receiver receive data demodulating device 10 transmission signal after, enter
Cross the conditioning of signal conditioning circuit, the signal after conditioning is sent to data acquisition unit 17 by signal projector.
In order to be managed to the data after demodulation and calculate, the data required for drawing measured data is carried out
Assessment.The present embodiment provides a kind of fiber grating demodulation device, and data computing device 18 includes: Data Management Unit, recurrence meter
Calculate unit；
Data Management Unit is connected with recurrence computing unit data harvester 17 respectively；
Data Management Unit, the data sending for receiving data harvester 17, and send the data to recurrence calculating
Unit；
Return computing unit, the data sending for receiving data administrative unit, through calculating analysis result, and will
Analysis result is sent to Data Management Unit.
By above example as can be seen that Data Management Unit and return the setting of computing unit it is achieved that to demodulation
The management of data afterwards and calculating, and can also be managed to returning the data obtaining after calculating according to administrative unit, realize surveying
Amount data and the contrast returning the data after calculating, are more fully analyzed to data.
In order to achieve to the data after measurement and the data returning after calculating, the present embodiment provides a kind of fiber grating
Demodulating equipment, data computing device 18 also includes data storage cell；
Data storage cell is connected with Data Management Unit；
Data storage device, the data receiving for data storage managing device.
By above example as can be seen that data storage device stores substantial amounts of measurement data and returns after calculating
Data, not only can timely see data result after a measurement, the measurement result before can also inquiring after multiple measurement,
The data facilitating different times is compared.
In order to realize the effectively connection of optical fiber, realize the branch of optical signal.The present embodiment provides a kind of fiber grating demodulation
Device, fiber coupler 13 adopts 4 passage couplers, 8 passage couplers, 16 passage couplers or 32 passage couplers.
Fiber coupler 13 is the optical device realizing distribution between different optical fiber for the optical signal power or combination, using difference
The mutual exchanging action that fiber facet is close to guided wave energy in fiber cores area is constituted, and can be divided into multimode light by the fiber type being adopted
Fibre, single-mode fiber and polarization-maintaining fiber coupler 13, fiber coupler 13 is the device being detachably connected between optical fiber and optical fiber
Part, it is the accurate docking of two end faces optical fiber, so that the light energy of launching fiber output can couple to greatest extent
To in reception optical fiber, and it is made to intervene optical link thus being minimized to the impact that system causes.General fiber coupler 13
It is divided into x shape, y shape, star and tree-like.
In order to realize timely seeing the result at data computing device 18 calculating, the present embodiment provides a kind of optical fiber
Grating demodulation device, data presentation device 19 is led display.
By above example as can be seen that this led display is connected with data computing device 18, can timely show
Data computing device 18 is computed the data drawing, is convenient for people to timely be adjusted according to data.
In order to be able to enable fiber-optic grating sensor can apply under conditions of environment is relatively more severe, and do not damaged
Hinder the accuracy it is ensured that measuring.The present embodiment provides a kind of fiber grating demodulation device, and fiber-optic grating sensor 14 passes for anchor pole
Sensor.
By above example as can be seen that fiber-optic grating sensor is combined with anchor pole, can either realize to tunnel
The measurement of status it is also possible to play certain support action to tunnel, and the combination of anchor pole and fiber-optic grating sensor
It is effectively protected sensor will not be scraped off under severe conditions, thus ensure that the accuracy of measurement data.
In order to enable the sensor to normally work under rugged environment in tunnel, and enable the data recording more
Plus accurate, be easy to the analysis to data for the test system, thus ensureing the construction safety in tunnel.The present embodiment provides a kind of light
Fine grating demodulation device, anchor sensor includes: fiber grating, intermediate layer and anchor rod body；
Fiber grating is arranged on the center position of anchor rod body, and anchor rod body is connected by intermediate layer with fiber grating.
By above example as can be seen that by the setting of fiber grating, intermediate layer and anchor pole so that fiber grating with
Anchor pole is effectively combined and is integrated, such fiber grating is embedded into being wholely set among anchor pole, squeeze into rock with anchor pole
Layer, fiber grating is also driven into rock stratum together, fiber grating is served with the effect of protection, and is conducive to enabling fiber grating
Enough stress-strain datas preferably perceiving anchor pole, wherein, grating is etched on optical fiber, and is placed equidistant.In addition, anchor pole
With fiber grating be wholely set accuracy and the accuracy that can also improve measured data, be easy to system and carry out comprehensively
Monitoring and analysis, obtain in tunnel more comprehensively data it is ensured that personal security in tunnel, that reduces that security incident occurs is several
Rate, preferably ensure that construction safety.
In order to ensure fiber grating demodulation device energy when power-off or main power voltage shakiness cisco unity malfunction
Enough normal works, the present embodiment provides a kind of fiber grating demodulation device, also includes: stand-by power supply 20；Stand-by power supply 20 is respectively
It is connected with data demodulating device, signal regulating device, data acquisition unit, data computing device data display device.This is standby
Ensure that fiber grating demodulation device can be continuously fiber grating when main power source is idle with the setting of power supply 20
Demodulating equipment is powered it is ensured that the normal operation of equipment.
In order to shield the interference of outer signals, the present embodiment provides a kind of fiber grating demodulation device, and fiber grating solution fills
Put outside and be provided with shielding casing.The setting of this shielding casing, can effectively shield the interference of outer signals it is ensured that
The accuracy of measurement data.
In sum, by arranging data demodulating device, signal regulating device, data acquisition unit data calculating dress
Put, improve accuracy and the accuracy of fiber grating demodulation device, decrease appearance interfered by outside in transmitting procedure
The situation of data distortion, reduces error range, preferably ensure that the authenticity of data, preferably residing for reaction measurand
Situation.
The above, specific embodiment only of the present utility model, but protection domain of the present utility model does not limit to
In this, any those familiar with the art, in the technical scope that the utility model discloses, can readily occur in change
Or replace, all should cover within protection domain of the present utility model.Therefore, protection domain of the present utility model should described to weigh
The protection domain that profit requires is defined.
Claims (7)
1. a kind of fiber grating demodulation device is it is characterised in that include: data demodulating device, signal regulating device, data acquisition
Device, data computing device data display device；
Described data demodulating device is connected with described signal regulating device and described data acquisition unit respectively；
Described signal regulating device is also connected with described data acquisition unit, and described data computing device is adopted with described data respectively
Acquisition means and described data presentation device connect；
Described data demodulating device includes: wideband light source, tunable optic filter, fiber coupler, fiber-optic grating sensor, photoelectricity
Detector；
Described tunable optic filter is connected with described wideband light source, described fiber coupler and described data acquisition unit respectively；
Described fiber-optic grating sensor is connected with described fiber coupler and described photodetector respectively；
Described photodetector is also connected with described signal regulating device；
Described fiber-optic grating sensor is anchor sensor；
Described anchor sensor group includes multiple anchor sensors；
Described anchor sensor includes: fiber grating, intermediate layer, anchor rod body；
Described fiber grating is arranged on the center position of described anchor rod body, and described anchor rod body is passed through with described fiber grating
Described intermediate layer connects.
2. fiber grating demodulation device according to claim 1 is it is characterised in that described signal regulating device includes: letter
Number receiver, signal conditioning circuit and signal projector；
Described signal conditioning circuit is connected with described signal receiver and described signal projector respectively.
3. fiber grating demodulation device according to claim 1 is it is characterised in that described fiber grating demodulation device also wraps
Include: stand-by power supply；
Described stand-by power supply respectively with described data demodulating device, described signal regulating device, described data acquisition unit, described
Data computing device and described data presentation device connect.
4. fiber grating demodulation device according to claim 1 is it is characterised in that described fiber coupler adopts 4 passages
Coupler, 8 passage couplers, 16 passage couplers or 32 passage couplers.
5. fiber grating demodulation device according to claim 4 it is characterised in that described fiber coupler be x shape, y shape,
Star and tree-like.
6. fiber grating demodulation device according to claim 1 is it is characterised in that set outside described fiber grating solution device
It is equipped with shielding casing.
7. fiber grating demodulation device according to claim 1 is it is characterised in that described data presentation device shows for led
Show device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620513221.3U CN205898163U (en) | 2016-05-30 | 2016-05-30 | Fiber grating demodulating equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620513221.3U CN205898163U (en) | 2016-05-30 | 2016-05-30 | Fiber grating demodulating equipment |
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| Publication Number | Publication Date |
|---|---|
| CN205898163U true CN205898163U (en) | 2017-01-18 |
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ID=57766922
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620513221.3U Active CN205898163U (en) | 2016-05-30 | 2016-05-30 | Fiber grating demodulating equipment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110987037A (en) * | 2019-12-11 | 2020-04-10 | 岭东核电有限公司 | Nuclear power environment safety monitoring method and device based on fiber bragg grating sensor |
| CN111385024A (en) * | 2020-03-30 | 2020-07-07 | 南京信息工程大学 | Multi-core less-mode sensing communication fusion access transmission system |
-
2016
- 2016-05-30 CN CN201620513221.3U patent/CN205898163U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110987037A (en) * | 2019-12-11 | 2020-04-10 | 岭东核电有限公司 | Nuclear power environment safety monitoring method and device based on fiber bragg grating sensor |
| CN111385024A (en) * | 2020-03-30 | 2020-07-07 | 南京信息工程大学 | Multi-core less-mode sensing communication fusion access transmission system |
| CN111385024B (en) * | 2020-03-30 | 2021-04-13 | 南京信息工程大学 | Multi-core less-mode sensing communication fusion access transmission system |
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