CN206193025U - Passive formula air speed measuring device of optic fibre - Google Patents
Passive formula air speed measuring device of optic fibre Download PDFInfo
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- CN206193025U CN206193025U CN201621096331.0U CN201621096331U CN206193025U CN 206193025 U CN206193025 U CN 206193025U CN 201621096331 U CN201621096331 U CN 201621096331U CN 206193025 U CN206193025 U CN 206193025U
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- wind speed
- speed measuring
- measuring device
- optical fiber
- magnet
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- 239000000835 fiber Substances 0.000 title claims abstract description 34
- 239000013307 optical fiber Substances 0.000 claims description 26
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical group [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 9
- 229910052782 aluminium Inorganic materials 0.000 claims description 9
- 239000004411 aluminium Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 6
- 238000001514 detection method Methods 0.000 abstract description 3
- 238000006243 chemical reaction Methods 0.000 abstract description 2
- 230000007774 longterm Effects 0.000 abstract description 2
- 230000008859 change Effects 0.000 description 11
- 238000005259 measurement Methods 0.000 description 11
- 238000005516 engineering process Methods 0.000 description 10
- 238000000034 method Methods 0.000 description 6
- 238000005299 abrasion Methods 0.000 description 5
- 238000012806 monitoring device Methods 0.000 description 5
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- 238000012544 monitoring process Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical group [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000000747 cardiac effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
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- 235000013399 edible fruits Nutrition 0.000 description 1
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- 238000003379 elimination reaction Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
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- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- 230000002035 prolonged effect Effects 0.000 description 1
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- 239000007787 solid Substances 0.000 description 1
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- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model relates to a wind speed detects technical field, especially relates to a passive formula air speed measuring device of optic fibre, and it is including fixed chassis, vane structure and fiber bragg grating strain sensor, it can be relative to be equipped with on the fixed chassis the pivoted center pivot of fixed chassis, be connected with in the pivot of center vane structure and tumbler disc, the last magnet that is equipped with of tumbler disc, fiber bragg grating strain sensor sets up on the cantilever of cantilever beam, the free end of cantilever beam be equipped with can with tumbler disc's magnet relative magnet on axial direction. The utility model discloses can reduce the wearing and tearing that rigidly connected device long term operation brought to the device, the temperature be can also eliminate through the detection that corresponds the frequency conversion rate and to measuring result's influence, high wind speed measuring accuracy and reliability are put forward.
Description
Technical field
The utility model is related to the wind speed measurement technical field based on fiber grating sensing technology, more particularly to a kind of optical fiber
Passive type wind speed measuring device.
Background technology
The instrument of measurement air velocity is widely used in each field, such as electric power, steel, petrochemical industry, energy-conservation industry, day at present
Often in life, many industries are required for using air monitoring device, such as fan manufacturing industry, the fishery that goes to sea, exhausting air draft heating
System etc., is required for being carried out using wind speed measuring device the measurement of wind speed, wind-warm syndrome, air quantity.Existing wind speed measuring device point
It is two major classes：Active measurement apparatus and passive measurement device, such as electronics wind-cup type, hot-wire, ultrasonic type, Doppler frequency shift formula
And pitot tube type belongs to active measurement；And fiber grating contact type measurement wind speed.More commonly used in active measurement apparatus
Be electronic type measuring wind speed technology, be doomed the characteristics of it is based on electronic information treatment technology its will by it is actively powered,
Easily by electromagnetic interference, signal remote transmission it is unstable, data transmission capacity is limited etc., and factor is restricted, and limits its applied environment
Limitation, especially the safety and reliability of electronic type anemometry have received under some strong magnetic, forceful electric power environment
Greatly challenge.
And the appearance of fiber grating sensing technology, except the limitation for breaching the disturbing factors such as actively powered and forceful electric power, strong magnetic
Outward, also there is sensitivity high, small volume, light weight, low cost, and with intrinsic certainly relevant ability by force and at one
The unique advantage of multipoint multiplexing, many reference amounts distribution discriminating measurement is realized on optical fiber using multiplexing technology.Although existing optical fiber
The passive online air monitoring method of grating sensing technique, can make up existing electronic type wind speed measuring device inclination angle measurement method
Deficiency, be conducive to that computer remote is monitored and diversification is analyzed, but existing fiber grating sensing technology is passive online
Air monitoring device uses contact, and prolonged contact friction can cause the abrasion of air monitoring device with aging, influence dress
The normal work put；Also, the passive online air monitoring device of existing fiber grating sensing technology is by obtaining wavelength
Data measure wind speed, and in the monitoring process of wind speed, the temperature around fiber Bragg grating strain sensor can produce change,
The change of temperature can influence fiber Bragg grating strain sensor, i.e., influence is produced on centre wavelength, so that it cannot be guaranteed that measuring wind speed
Accuracy and reliability.
Utility model content
(1) technical problem to be solved
The utility model provides a kind of optical fiber passive formula wind speed measuring device, for solving existing fiber grating measuring wind speed
The change of abrasion, aging problem and temperature that device is present reduces the problem of the accuracy and reliability of measuring wind speed.
(2) technical scheme
In order to solve the above-mentioned technical problem, the utility model provides a kind of optical fiber passive formula wind speed measuring device, including solid
Determine chassis, vane structure and fiber Bragg grating strain sensor；The fixed underpan is provided with being capable of relatively described fixed underpan
The central rotating shaft of rotation, is connected with the vane structure and rotates disk on the central rotating shaft, the rotation disk is provided with
Magnet；The fiber Bragg grating strain sensor is arranged on the cantilever of cantilever beam, and the free end of the cantilever beam is provided with can be with
The magnet for rotating disk magnet relative in the axial direction.
Wherein, the central rotating shaft is arranged on the fixed underpan by bearing fixing device.
Wherein, the central rotating shaft runs through the fixed underpan and the bearing fixing device, the one of the central rotating shaft
End is connected with the vane structure, and the other end of the central rotating shaft is fixed on the central area of the rotation disk.
Wherein, the cantilever beam is arranged on the fixed underpan.
Wherein, the fiber Bragg grating strain sensor is welded on the cantilever beam.
Wherein, the vane structure is three cup type vane structures.
Wherein, the vane of the vane structure is semi-circular.
Wherein, the material of the vane structure is aluminium.
Wherein, the material for rotating disk is aluminium.
(3) beneficial effect
Compared with prior art, optical fiber passive formula wind speed measuring device provided by the utility model has following beneficial effect
Really：
1st, optical fiber passive formula wind speed measuring device of the present utility model, using in rotation disk position corresponding with cantilever beam structure
The method for installing magnet, wind speed is quantified as the stress of a cycle change using non-contacting magneticaction.The design
On the one hand the abrasion that the long-term work of rigid connection device comes to device band can be reduced, on the other hand by the inspection of correspondence Frequency
Survey can eliminate influence of the temperature change to measurement result, greatly improve the accuracy and reliability of measuring wind speed；
2nd, optical fiber passive formula wind speed measuring device of the present utility model, using semi-circular vane, the structure can increase
Wind area, increases wind-engaging dynamics, effectively improves threshold wind velocity；Using the rotation disk of the aluminum without magnetic, it is to avoid magnetic
Interference give device band come performance deterioration；By the way of bearing fixed center rotating shaft, central rotating shaft and fixation can be eliminated
The friction of structure, reduces the threshold wind velocity of device, the infringement that elimination brings because rubbing to device parts, so as to improve device
Performance, it is ensured that the flexibility of device and practicality.
Brief description of the drawings
The structural representation of the optical fiber passive formula wind speed measuring device that Fig. 1 is provided for the utility model embodiment；
In figure, 1：Vane structure；2：Bearing fixing structure；3：Central rotating shaft；4：Chassis；5：Rotate disk；6：Magnet；7：
Cantilever beam；8：Fiber Bragg grating strain sensor.
Specific embodiment
For the ease of understanding the utility model, the utility model is more fully retouched below with reference to relevant drawings
State.Better embodiment of the present utility model is given in accompanying drawing.These are only preferred embodiment of the present utility model, and unprovoked
This limitation the scope of the claims of the present utility model, equivalent structure that every utilization the utility model specification and accompanying drawing content are made or
Equivalent flow conversion, or other related technical fields are directly or indirectly used in, similarly it is included in of the present utility model special
In sharp protection domain.
Unless otherwise defined, all of technologies and scientific terms used here by the article is led with technology of the present utility model is belonged to
The implication that the technical staff in domain is generally understood that is identical.It is herein to be in term used in the description of the present utility model
The purpose of description specific embodiment, it is not intended that in limitation the utility model.Term as used herein " and/or " bag
Include the arbitrary and all of combination of one or more related Listed Items.
The utility model provides a kind of optical fiber passive formula wind speed measuring device, for solving existing fiber grating measuring wind speed
Abrasion, aging problem that device is present, it is to avoid influence of the change of temperature to the accuracy and reliability of reduction measuring wind speed.
As shown in figure 1, a kind of optical fiber passive formula wind speed measuring device is provided in the utility model embodiment, including fixed bottom
Disk 4, vane structure 1 and fiber Bragg grating strain sensor 8；Fixed underpan 4 is provided with can be relatively fixed in the rotation of chassis 4
Heart rotating shaft 3, is connected with vane structure 1 and rotates disk 5 on central rotating shaft 3, rotate disk 5 and be provided with magnet；Fiber grating should
Become sensor 8 to be arranged on the cantilever of cantilever beam 7, the free end of cantilever beam 7 is provided with can be with the magnet of rotation disk 5 in axial direction
Relative magnet on direction.When wind blows vane structure 1 and drives central rotating shaft 3 to rotate, what is be fixedly connected with central rotating shaft 3 turns
The also concomitant rotation of disk 5 is moved, being arranged on the magnet rotated on disk 5 can be at a time with the magnet of the free end of cantilever beam 7
Mutually corresponded to so as to interact in axial direction, produce non-contacting magneticaction, the fiber grating strain on cantilever beam 7 is passed
Sensor 8 is acted on by power, so as to change the centre wavelength of fiber grating, in wind drives and rotates the rotation process of disk 5, is passed through
The quantity for detecting the peak value of unit interval internal strain waveform is that can obtain straining frequency, further according to the relation between strain and wind speed
Derive real-time wind speed.
The utility model sets magnet using the correspondence position on disk 5 and cantilever beam 7 is rotated, and can utilize noncontact
Magneticaction cleverly by wind speed be quantified as a cycle change stress.By the frequency (unit for detecting STRESS VARIATION
The quantity of the peak value of time internal strain waveform) final wind speed in real time is measured, on the one hand the design can reduce rigid connection device
Work long hours the abrasion come to device band, and on the other hand eliminate temperature change by the detection of correspondence Frequency ties to measurement
The influence of fruit, it is possible to increase the accuracy and reliability of measuring wind speed.
It is understood that the fiber Bragg grating strain sensor 8 in the present embodiment is Fiber Bragg Grating FBG (Fiber
Bragg Grating abbreviation FBG) strain transducer.The fiber Bragg grating strain sensor that the utility model is utilized has achievable
Passive operation, can anti-forceful electric power and the features such as strong magnetic disturbance, small volume, light weight, anticorrosive and high temperature resistant.
In the present embodiment, central rotating shaft 3 is arranged on fixed underpan 4 by bearing fixing device 2.Central rotating shaft 3 runs through
Fixed underpan 4 and bearing fixing device 2, bearing fixing device 2 are connected to the bottom of fixed underpan 4, and thus central rotating shaft 3 can lead to
Bearing fixing device 2 is crossed to be arranged on fixed underpan 4.This can be eliminated center and be turned by the way of bearing fixed center rotating shaft 3
The friction of axle 3 and fixed structure, greatly reduces the threshold wind velocity of device, and can eliminate and give device parts band because rubbing
The infringement for coming, so as to improve the performance of device, it is ensured that the flexibility of device and practicality.
In the present embodiment, the bottom of central rotating shaft 3 is connected with vane structure 1, and the top of central rotating shaft 3 is fixed on slewing circle
The central area of disk 5.The bottom for rotating disk sets magnet, and cantilever beam 7 is arranged on the close edge of fixed underpan 4, cantilever
The top of the free end of beam 7 sets magnet, and enable magnet at two with it is corresponding in the axial direction.
In the present embodiment, the upper surface of the cantilever of cantilever beam 7 is welded with fiber Bragg grating strain sensor 8, in rotation process,
The magnet of the free end of cantilever beam 7 can align with the magnet for rotating the bottom of disk 5, so that the magnet at two interacts,
In order to produce obvious magneticaction, should be maintained a certain distance when magnet aligns at two, that is, rotate disk and fixed underpan
Need to maintain a certain distance in the axial direction, to ensure enough magneticactions, the magnet on cantilever beam 7 is subject on rotating disk
The effect of magnet magnetic force, drives the deformation of cantilever beam free end, the change of cantilever beam free end to drive cardiac wave in fiber grating
Drift long, rotates disk and often rotates once, and the centre wavelength of fiber grating will produce the drift of a cycle.
It is understood that vane structure 1 is how cup type vane structure, in the present embodiment, vane structure 1 is cup type using three
Vane structure.
In the present embodiment, the vane of vane structure 1 is semi-circular, and this structure can increase wind area, increase and receive wind-force
Degree, effectively improves threshold wind velocity.
In the present embodiment, the material of vane structure 1 is aluminium, due to aluminum lightweight, non-corrosive, then using the vane of aluminum
Structure can both avoid vane from leaking the problem got rusty outside cruelly for a long time, can also increase the flexibility of vane rotation.
In the present embodiment, the material for rotating disk 5 is aluminium, and aluminum is light, and without magnetic, can be more during rotation
Do not influenceed flexibly and by the magnet that lower section is fixed on cantilever beam end, it is to avoid the interference of magnetic is bad to the performance that device band is come
Become.
The specific implementation principle of the optical fiber passive formula wind speed measuring device that the utility model is provided and the following institute of working method
State：
When the optical fiber passive formula wind speed measuring device local environment has wind, under wind action so that vane is rotated, wind
Cup is driven by central rotating shaft 3 and rotates disk 5 with the rotational speed of vane.The free end of cantilever beam 7 and the bottom surface edge of rotation disk 5
Have fixed magnet, when the magnet of the magnet and the free end of cantilever beam 7 that rotate disk 5 bottom surface go to it is just relative in axial direction
When, two magnet are interacted so that the cantilever of cantilever beam 7 is deformed upon, and the fiber grating on cantilever beam 7 is made by power
With centre wavelength produces drift, and demodulated instrument gathers information, data are stored in into database, in case program is processed.Vane is often rotated
One circle will occur a strain path.Wind speed is bigger, and the speed that vane is rotated is bigger, i.e., rotating speed is higher, the unit interval
The number of times of inner fiber grating strain will be more, namely the frequency of fiber grating under tension or compression strain is higher, by prison
Survey unit interval inner fiber grating strain frequency, so that it may calculate real-time wind speed size.
Between two magnet when axial direction is relative, produced interaction force can be repulsive force, or suction
Gravitation, both active forces can cause that centre wavelength produces skew, can realize answering the detection of Frequency.
When cantilever beam 7 causes that two magnet produce repulsive interaction with the rotation axial distance of disk 5, cantilever beam upper table is downwards
Deform, produce the deformation of stretching, the power effect that the fiber grating installed in the upper surface of cantilever beam 7 is stretched, optical fiber light
The centre wavelength of grid gathers information, data is stored in into database toward big skew, demodulated instrument, in case program is processed.
When cantilever beam 7 causes that two magnet produce sucking action with the rotation axial distance of disk 5, cantilever beam upper table is upwardly
Deform, produce the deformation of compression, the fiber grating installed in the upper surface of cantilever beam 7 is subject to the power effect compressed, optical fiber light
The centre wavelength of grid gathers information, data is stored in into database toward small skew, demodulated instrument, in case program is processed.
The utility model is based on the passive online air monitoring device of fiber-optic grating sensor, cleverly by suffered by vane
Power from wind is converted to the non-contacting magneticaction that strain cantilever beam end is subject to, and causes equipped with fiber grating strain sensor
The cantilever beam strain of device, so as to obtain corresponding data message.This design reduces what is come due to friction belt between device
Device is damaged, and the influence of the change to centre wavelength of temperature is overcome again, makes result more accurately and reliably.
Preferred embodiment of the present utility model is the foregoing is only, is not used to limit the utility model, it is all at this
Within the spirit and principle of utility model, any modification, equivalent substitution and improvements made etc. should be included in the utility model
Protection domain within.
Claims (9)
1. a kind of optical fiber passive formula wind speed measuring device, it is characterised in that including fixed underpan, vane structure and fiber grating
Strain transducer；The fixed underpan is provided with the central rotating shaft that can be rotated relative to the fixed underpan, the central rotating shaft
On be connected with the vane structure and rotate disk, the rotation disk is provided with magnet；The fiber Bragg grating strain sensor
It is arranged on the cantilever of cantilever beam, the free end of the cantilever beam is provided with can be with the magnet of the rotation disk in axial direction
Upper relative magnet.
2. optical fiber passive formula wind speed measuring device according to claim 1, it is characterised in that the central rotating shaft passes through axle
Fixing device is held to be arranged on the fixed underpan.
3. optical fiber passive formula wind speed measuring device according to claim 2, it is characterised in that the central rotating shaft runs through institute
Fixed underpan and the bearing fixing device are stated, one end of the central rotating shaft is connected with the vane structure, the center turns
The other end of axle is fixed on the central area of the rotation disk.
4. the optical fiber passive formula wind speed measuring device according to any one of claim 1-3, it is characterised in that the cantilever
Beam is arranged on the fixed underpan.
5. the optical fiber passive formula wind speed measuring device according to any one of claim 1-3, it is characterised in that the optical fiber
Grating strain transducer is welded on the cantilever beam.
6. the optical fiber passive formula wind speed measuring device according to any one of claim 1-3, it is characterised in that the vane
Structure is three cup type vane structures.
7. the optical fiber passive formula wind speed measuring device according to any one of claim 1-3, it is characterised in that the vane
The vane of structure is semi-circular.
8. the optical fiber passive formula wind speed measuring device according to any one of claim 1-3, it is characterised in that the vane
The material of structure is aluminium.
9. the optical fiber passive formula wind speed measuring device according to any one of claim 1-3, it is characterised in that the rotation
The material of disk is aluminium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621096331.0U CN206193025U (en) | 2016-09-29 | 2016-09-29 | Passive formula air speed measuring device of optic fibre |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621096331.0U CN206193025U (en) | 2016-09-29 | 2016-09-29 | Passive formula air speed measuring device of optic fibre |
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| Publication Number | Publication Date |
|---|---|
| CN206193025U true CN206193025U (en) | 2017-05-24 |
Family
ID=58730369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621096331.0U Active CN206193025U (en) | 2016-09-29 | 2016-09-29 | Passive formula air speed measuring device of optic fibre |
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| CN (1) | CN206193025U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106290973A (en) * | 2016-09-29 | 2017-01-04 | 国家电网公司 | A kind of optical fiber passive formula wind speed measuring device |
| CN108037308A (en) * | 2017-11-13 | 2018-05-15 | 华中科技大学 | A kind of cascade IFFPI air velocity transducers and its detection device based on cursor effect |
| CN109030863A (en) * | 2018-09-04 | 2018-12-18 | 刘绍波 | A kind of fiber grating air monitoring sensor |
| CN110017872A (en) * | 2019-04-19 | 2019-07-16 | 南通感忆达信息技术有限公司 | A kind of passive type fuel gas monitoring system and method |
| CN110017871A (en) * | 2019-04-19 | 2019-07-16 | 南通感忆达信息技术有限公司 | A kind of passive type fuel gas monitoring system and method using bifurcated overarm arm |
| CN110068373A (en) * | 2019-04-19 | 2019-07-30 | 南通感忆达信息技术有限公司 | A kind of fuel gas monitoring system and method based on fiber-optic grating sensor |
| CN110940829A (en) * | 2019-12-06 | 2020-03-31 | 石家庄铁道大学 | Fiber bragg grating wind direction sensor and fiber bragg grating wind speed and wind direction sensor |
-
2016
- 2016-09-29 CN CN201621096331.0U patent/CN206193025U/en active Active
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106290973A (en) * | 2016-09-29 | 2017-01-04 | 国家电网公司 | A kind of optical fiber passive formula wind speed measuring device |
| CN108037308A (en) * | 2017-11-13 | 2018-05-15 | 华中科技大学 | A kind of cascade IFFPI air velocity transducers and its detection device based on cursor effect |
| CN108037308B (en) * | 2017-11-13 | 2020-01-10 | 华中科技大学 | Cascaded IFFPI wind speed sensor based on vernier effect and detection device thereof |
| CN109030863A (en) * | 2018-09-04 | 2018-12-18 | 刘绍波 | A kind of fiber grating air monitoring sensor |
| CN109030863B (en) * | 2018-09-04 | 2023-11-10 | 刘绍波 | Fiber bragg grating wind speed monitoring sensor |
| CN110017872A (en) * | 2019-04-19 | 2019-07-16 | 南通感忆达信息技术有限公司 | A kind of passive type fuel gas monitoring system and method |
| CN110017871A (en) * | 2019-04-19 | 2019-07-16 | 南通感忆达信息技术有限公司 | A kind of passive type fuel gas monitoring system and method using bifurcated overarm arm |
| CN110068373A (en) * | 2019-04-19 | 2019-07-30 | 南通感忆达信息技术有限公司 | A kind of fuel gas monitoring system and method based on fiber-optic grating sensor |
| CN110940829A (en) * | 2019-12-06 | 2020-03-31 | 石家庄铁道大学 | Fiber bragg grating wind direction sensor and fiber bragg grating wind speed and wind direction sensor |
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