CN207396587U - All-fiber electronic current transformer and temperature compensation type wave plate - Google Patents
All-fiber electronic current transformer and temperature compensation type wave plate Download PDFInfo
- Publication number
- CN207396587U CN207396587U CN201721473213.1U CN201721473213U CN207396587U CN 207396587 U CN207396587 U CN 207396587U CN 201721473213 U CN201721473213 U CN 201721473213U CN 207396587 U CN207396587 U CN 207396587U
- Authority
- CN
- China
- Prior art keywords
- wave plate
- temperature
- plate body
- temperature sensor
- piezoelectric ceramics
- 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.)
- Expired - Fee Related
Links
- 239000000835 fiber Substances 0.000 title claims abstract description 33
- 239000013307 optical fiber Substances 0.000 claims abstract description 32
- 239000000919 ceramic Substances 0.000 claims abstract description 26
- 230000008859 change Effects 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 claims abstract description 5
- 239000004836 Glue Stick Substances 0.000 claims description 2
- 238000007711 solidification Methods 0.000 claims description 2
- 230000008023 solidification Effects 0.000 claims description 2
- 238000005259 measurement Methods 0.000 abstract description 5
- 230000006872 improvement Effects 0.000 description 4
- 230000010287 polarization Effects 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 2
- 238000000137 annealing Methods 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000005693 optoelectronics Effects 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
Abstract
The utility model is related to technical field of optical fiber sensing, particularly all-fiber electronic current transformer and temperature compensation type wave plate.The current transformer includes temperature compensation type wave plate and signal processing apparatus, and temperature compensation type wave plate includes wave plate body, piezoelectric ceramics and temperature sensor, and wave plate body sticks on the piezoelectric ceramics surface by method fixation physically or chemically；Piezoelectric ceramics sets to control to adjust the size of wave plate body, temperature sensor is used to detect the temperature of wave plate body, the output terminal connection temperature sensor of signal processing apparatus, the output terminal connection piezoelectric ceramics of signal processing apparatus, it gathers the temperature information of wave plate body in real time by temperature sensor and is transferred to signal control device, signal control device output control piezoelectric ceramics, so as to change the size of wave plate body, and then the control of temperature compensation type is formd to wave plate body, it solves the problems, such as to reduce due to measurement accuracy caused by wave plate change in size caused by temperature change.
Description
Technical field
The utility model is related to technical field of optical fiber sensing, particularly all-fiber electronic current transformer and temperature-compensatings
Formula wave plate.
Background technology
All-fiber electronic current transformer based on faraday's magnetic rotation effect is compared with conventional electromagnetic mutual inductor
It compares, there are many advantages such as measurement range is big, precision is high, insulation is good, be increasingly subject to the attention of domestic and international researcher.But
Since linear birefringence, Wei Erde (Verdet) constant, optical fiber quarter-wave plate vary with temperature, cause it in full temperature
In the range of (- 40-85 DEG C) measurement accuracy reduce, wherein linear birefringence be optical fiber inherently, have with manufacturing process
It closes, can be controlled by during drawing optical fiber by reducing the measures such as the intrinsic birefringence of optical fiber and fiber optic loop annealing；Verdet
The variation of constant with temperature has fixed changing rule, and Verdet within the scope of the full temperature of all-fiber electronic current transformer
Scale factor errors are more than 0.7% caused by constant with temperature variation；And optical fiber quarter-wave plate is by two sections of polarization-maintaining light
Fibre claps what length was made with 45 ° of a quarters to intercepting output terminal optical fiber after axis welding, and the bat length of polarization maintaining optical fibre is its institute
Locate the function of temperature, when the temperature varies, the phase delay angle of wave plate can change, and cause all-fiber current transformator precision
Be deteriorated, caused by all-fiber current transformator ratio difference it is full temperature scope in reach more than 2%.Therefore, above-mentioned three is compared
For, it is to restrict all-fiber current transformator in full temperature scope that optical fiber quarter-wave plate and Verdet constant, which are influenced by temperature,
The key factor inside used.
Utility model content
The purpose of this utility model is to provide all-fiber electronic current transformer and temperature compensation type wave plate, to solve
The problem of being reduced due to measurement accuracy caused by wave plate change in size caused by temperature change.
To achieve the above object, the utility model provides a kind of all-fiber electronic current transformer, including wave plate and letter
Number processing unit, the wave plate include wave plate body, and the wave plate further includes to control to adjust the size of the wave plate body
Wave plate size adjustment module and temperature sensor for detecting the temperature of the wave plate body, the wave plate size adjust mould
Block is fixedly connected with the wave plate body, and the temperature signal input of the signal processing apparatus connects the temperature sensor,
The control signal output of the signal processing apparatus connects the wave plate size adjustment module, according to the temperature of the wave plate body
Degree variation adjusts the length of the wave plate body accordingly.The utility model gathers wave plate body by temperature sensor in real time
Temperature information, and temperature information is transferred to signal control device, according to the variation of temperature, signal control device output control letter
Number controls ripple chip size adjustment module, so as to change the size of wave plate body, and then forms temperature compensation type to wave plate body
Control, wave plate deformation caused by compensating for temperature change solved since wave plate change in size causes caused by temperature change
Measurement accuracy reduce the problem of.
As a kind of improvement of all-fiber electronic current transformer provided by the utility model, the wave plate size is adjusted
Module is piezoelectric ceramics, and the wave plate body sticks on the piezoelectric ceramics surface by method fixation physically or chemically.
As a kind of being further improved for all-fiber electronic current transformer provided by the utility model, the wave plate sheet
Body is applied with photo-curable sticker on the piezoelectric ceramics surface.
Another step as a kind of all-fiber electronic current transformer provided by the utility model is improved, the wave plate sheet
Body is optical fiber quarter-wave plate.
As a kind of further improvement of all-fiber electronic current transformer provided by the utility model, the temperature
Sensor is fibre optic temperature sensor.
The utility model provides a kind of temperature compensation type wave plate, including wave plate body, further includes to control to adjust described
The wave plate size adjustment module of the size of wave plate body and the temperature sensor for detecting the temperature of the wave plate body, it is described
Wave plate size adjustment module is fixedly connected with the wave plate body, and the temperature signal output terminal of the temperature sensor is used to connect
Signal processing apparatus, the control signal input of the wave plate size adjustment module is for connecting signal processing apparatus, according to institute
The temperature change for stating wave plate body adjusts the length of the wave plate body accordingly.
As a kind of improvement of temperature compensation type wave plate provided by the utility model, the wave plate size adjustment module is pressure
Electroceramics, the wave plate body stick on the piezoelectric ceramics surface by method fixation physically or chemically.
As a kind of being further improved for temperature compensation type wave plate provided by the utility model, the wave plate body optics
Solidification glue sticks on the piezoelectric ceramics surface.
Another step as a kind of temperature compensation type wave plate provided by the utility model is improved, and the wave plate body is optical fiber
Quarter-wave plate.
As a kind of further improvement of temperature compensation type wave plate provided by the utility model, the temperature sensor is
Fibre optic temperature sensor.
Description of the drawings
Fig. 1 is a kind of temperature compensation structure schematic diagram of all-fiber electronic current transformer.
Specific embodiment
The utility model is described in more detail below in conjunction with the accompanying drawings.
The utility model provides a kind of all-fiber electronic current transformer, as shown in Figure 1, including temperature compensation type wave plate
And signal processing apparatus, wherein temperature compensation type wave plate include wave plate body 1, piezoelectric ceramics 2 and temperature sensor 3, piezoelectricity pottery
Porcelain 2 sets to control to adjust the size of wave plate body 1, and temperature sensor 3 is used to detect the temperature of wave plate body 1, at signal
Manage the output terminal connection temperature sensor of device, the output terminal connection piezoelectric ceramics 2 of signal processing apparatus.In current transformer
In, signal processing apparatus also controls connection phase-modulator.
Signal processing apparatus controls the deformation quantity of piezoelectric ceramics 2 by voltage control signal, so as to control wave plate body 1
Size, such as length.
Wave plate body 1 be a kind of optical fiber quarter-wave plate, all-fiber electronic current transformer at work, optical fiber four
The phase difference that/mono- wave plate introduces for 90 °, principle be due to there are birefringence, when polarised light transmits in polarization maintaining optical fibre,
Phase delay between two pattern is：
δ=(2 π/Lp)·z (1)
L in formulapIt is grown for the bat of polarization maintaining optical fibre；Z is the length of interception optical fiber.
Understand that z must accurately be equal to L by (1) formulap/ 4, the requirement of δ=pi/2 could be met, when optical fiber quarter-wave
When piece temperature changes, phase delay can also change i.e. δ and be changed therewith, change so as to cause output.
Since optical fiber Verdet constant is related with temperature, variation directly influences all-fiber electronic current transformer
The relation of output, optical fiber Verdet constant and temperature can have following formula (2) to draw：
From (2), the variation of fiber optics that moral constant with temperature can cause full optical-fiber current electronic current mutual inductor
Proportional error reach more than 0.7%.
By (1) formula, the length of optical fiber quarter-wave plate directly influences the phase difference variable quantity of its introducing, into
And the output of all-fiber electronic current transformer can be adjusted.
Optical fiber quarter-wave plate is sticked on piezoelectric ceramics 2, by the temperature for monitoring optical fiber quarter-wave plate in real time
Degree controls the voltage being added on piezoelectric ceramics 2 in real time, divides so as to effectively change piezoelectric ceramics and stick optical fiber four thereon
One of wave plate length, balance out optical fiber quarter-wave plate and Verdet constant and exported caused by being affected by temperature partially
Difference.
In practical applications, preferably optical fiber quarter-wave plate is applied with photo-curable sticker on the surface of piezoelectric ceramics,
The voltage control lead of piezoelectric ceramics is connected to signal processing apparatus；Preferable temperature sensor is fibre optic temperature sensor, by optical fiber
Temperature sensor, which sticks, to be fixed on piezoelectric ceramics surface and can accurately be measured close to the position of optical fiber quarter-wave plate or arbitrarily
The position of the temperature of optical fiber quarter-wave plate；The temperature signal that fibre optic temperature sensor is got is needed through opto-electronic conversion mould
Block is sent into signal processing apparatus after being converted into electric signal；It is complete so as to reach real-time monitoring, quick response, accurate control
Into temperature compensation operation.
The adjusting of wave plate size is not limited to piezoelectric ceramics, and the dress of subtle regulation and control wave plate length can also be capable of by other
It puts and optimizes controls ripple chip size.
Be presented above the utility model is related to specific embodiment, but the utility model is not limited to described reality
Apply mode.Under the thinking provided in the utility model, to above-mentioned by the way of being readily apparent that those skilled in the art
Technological means in embodiment is converted, replaced, changed, and play the role of and the utility model in relevant art hand
The purpose of utility model that section is essentially identical, realizes is also essentially identical, and the technical solution so formed is that above-described embodiment is carried out
What fine tuning was formed, this technical solution is still fallen in the scope of protection of the utility model.
Claims (10)
1. a kind of all-fiber electronic current transformer, including wave plate and signal processing apparatus, the wave plate includes wave plate body,
It is characterized in that, the wave plate further includes to control to adjust the wave plate size adjustment module and use of the size of the wave plate body
In the temperature sensor for the temperature for detecting the wave plate body, the wave plate size adjustment module is fixed with the wave plate body to be connected
It connects, the temperature signal input of the signal processing apparatus connects the temperature sensor, the control of the signal processing apparatus
Signal output part connects the wave plate size adjustment module, and the ripple is adjusted accordingly according to the temperature change of the wave plate body
The length of piece body.
2. all-fiber electronic current transformer according to claim 1, which is characterized in that the wave plate size adjusts mould
Block is piezoelectric ceramics, and the wave plate body sticks on the piezoelectric ceramics surface by method fixation physically or chemically.
3. all-fiber electronic current transformer according to claim 2, which is characterized in that the wave plate body optics
Solidification glue sticks on the piezoelectric ceramics surface.
4. according to the all-fiber electronic current transformer described in claim 1,2 or 3, which is characterized in that the wave plate body
For optical fiber quarter-wave plate.
5. all-fiber electronic current transformer according to claim 4, which is characterized in that the temperature sensor is light
Fine temperature sensor.
6. a kind of temperature compensation type wave plate, including wave plate body, which is characterized in that further include to control to adjust the wave plate sheet
The wave plate size adjustment module of the size of body and the temperature sensor for detecting the temperature of the wave plate body, the wave plate ruler
Very little adjustment module is fixedly connected with the wave plate body, and the temperature signal output terminal of the temperature sensor is used to connect at signal
Device is managed, the control signal input of the wave plate size adjustment module is for connecting signal processing apparatus, according to the wave plate
The temperature change of body adjusts the length of the wave plate body accordingly.
7. temperature compensation type wave plate according to claim 6, which is characterized in that the wave plate size adjustment module is piezoelectricity
Ceramics, the wave plate body stick on the piezoelectric ceramics surface by method fixation physically or chemically.
8. temperature compensation type wave plate according to claim 7, which is characterized in that the wave plate body photo-curable sticker
It applies on the piezoelectric ceramics surface.
9. according to the temperature compensation type wave plate described in claim 6,7 or 8, which is characterized in that the wave plate body is optical fiber four
/ mono- wave plate.
10. temperature compensation type wave plate according to claim 9, which is characterized in that the temperature sensor is fiber optic temperature
Sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721473213.1U CN207396587U (en) | 2017-11-07 | 2017-11-07 | All-fiber electronic current transformer and temperature compensation type wave plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721473213.1U CN207396587U (en) | 2017-11-07 | 2017-11-07 | All-fiber electronic current transformer and temperature compensation type wave plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207396587U true CN207396587U (en) | 2018-05-22 |
Family
ID=62325297
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721473213.1U Expired - Fee Related CN207396587U (en) | 2017-11-07 | 2017-11-07 | All-fiber electronic current transformer and temperature compensation type wave plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207396587U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109752579A (en) * | 2017-11-07 | 2019-05-14 | 许继集团有限公司 | A kind of novel all-fiber electronic current transformer and a kind of optical-fibre wave plate |
| CN112986650A (en) * | 2021-01-20 | 2021-06-18 | 河南平高电气股份有限公司 | All-fiber current transformer and temperature compensation method thereof |
-
2017
- 2017-11-07 CN CN201721473213.1U patent/CN207396587U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109752579A (en) * | 2017-11-07 | 2019-05-14 | 许继集团有限公司 | A kind of novel all-fiber electronic current transformer and a kind of optical-fibre wave plate |
| CN112986650A (en) * | 2021-01-20 | 2021-06-18 | 河南平高电气股份有限公司 | All-fiber current transformer and temperature compensation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102495260B (en) | Temperature drift compensation optical current transformer and current compensation method thereof | |
| CN207396587U (en) | All-fiber electronic current transformer and temperature compensation type wave plate | |
| CN110411433A (en) | A kind of atomic spin gyroscope detection light power error suppressing method based on field compensation | |
| CN109342807B (en) | Voltage sensing device combining elastic light modulation and electro-optic modulation and detection method | |
| CN101968507B (en) | Optical fiber voltage sensor and adjustment method thereof | |
| CN104713574A (en) | Closed loop fiber optic gyroscope scale factor high precision calibrating method | |
| CN106017511A (en) | Method for testing and compensating temperature coefficient of fiber-optic gyroscope | |
| CN107976299A (en) | Consider the bullet optical modulator retardation calibration analysis method and device of spectral dispersion | |
| CN101109637A (en) | Method for improving zero bias temperature sensitivity of optical fiber gyroscope | |
| CN105182093A (en) | Strong electric field sensor possessing temperature compensation and measurement method thereof | |
| CN107632211A (en) | A kind of quiescent point can control photoelectric integration electric-field measuring system and method | |
| CN112034229A (en) | All-fiber voltage transformer | |
| CN101788639A (en) | APD (Angular position digitizer) voltage and temperature curve testing device and use method thereof | |
| CN104076180B (en) | Dual probe-based calibration-free optical current sensor and method | |
| CN105203828A (en) | Photoelectric AC/DC voltage transducer based on Pockels effect | |
| CN107179431A (en) | The optical fiber current sensing device and its method measured in real time based on birefringence | |
| CN112525257B (en) | Double-parameter optical fiber sensing device for monitoring magnetic field and temperature and implementation method | |
| CN206497197U (en) | Optical fiber sensing ring performance detecting system | |
| CN109752579A (en) | A kind of novel all-fiber electronic current transformer and a kind of optical-fibre wave plate | |
| CN102590608A (en) | Environment temperature compensation heavy current measurement system based on fiber polarization detection | |
| CN109375137B (en) | 1/4 wave plate phase delay automatic testing device and method for all-fiber current transformer | |
| Bei et al. | The key state parameters and relevant monitoring methods of fiber optical current transformer | |
| CN203310365U (en) | Non-conductive medium thin film thickness online detection device of coplanar capacitive sensor | |
| JP4278209B2 (en) | Optical element and manufacturing method thereof | |
| CN104535819A (en) | Polarization error restraining device and method for Y waveguide loop of optical current transformer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180522 Termination date: 20211107 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |