CN107091685A - Optical-fiber sensing type rail exception acoustic monitoring probe - Google Patents
Optical-fiber sensing type rail exception acoustic monitoring probe Download PDFInfo
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- CN107091685A CN107091685A CN201710533838.0A CN201710533838A CN107091685A CN 107091685 A CN107091685 A CN 107091685A CN 201710533838 A CN201710533838 A CN 201710533838A CN 107091685 A CN107091685 A CN 107091685A
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- guide pipe
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- elastic
- bend section
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H9/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means
- G01H9/004—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means using fibre optic sensors
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Length Measuring Devices By Optical Means (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
Optical-fiber sensing type rail exception acoustic monitoring probe is related to railroad track detection technique field, mainly by incident optical, the output optical fiber, first micro-bend section, second micro-bend section, first breeze way, second breeze way, circular arc bending section, magnetic lid, vibrating membrane and slipmat composition, incident optical, the output optical fiber, first micro-bend section, second micro-bend section, circular arc bending section, first breeze way and the second breeze way constitute Fibre Optical Sensor mechanism, magnetic lid, lightweight pad and slipmat constitute subsidiary body, described probe is according to fiber microbending loss principle, microbending loss produces intensity modulation to the optical signal in optical fiber, this sonde configuration is simple, sensitivity is higher, it is anti-interference strong, working stability, long transmission distance, dynamic range is big, traverse measurement is convenient, probe is not by wild environment temperature, humidity, cleannes and electromagnetic interference influence, will not be because of moisture, dust, mouldy wait is corroded and influences the performance of sensor, probe can be used for a long time.
Description
Technical field
Visited the present invention relates to a kind of abnormal sonic transducer of rail, more particularly to a kind of abnormal acoustic monitoring of optical-fiber sensing type rail
Head, belongs to railroad track detection technique field.
Background technology
Optical fiber rail exception sonic transducer is not disturbed by electromagnetic environment, has been widely used due to its long transmission distance, its
Modulation format mainly has intensity modulation type, grating type optical fiber and interference-type etc., at present in terms of the abnormal sonic transducer of optical fiber rail
Existing more patented technology, these optical fiber rail exception sonic transducer respectively has its advantage, and some sensitivity is very high, and some frequencies are rung
Should be fine, some technology contents are very high, and common track voice signal conversion, these optical fiber rail abnormal sounds can be adapted to very well
The common ground of sensor is：(1) incident optical is to the fracture that has having between the output optical fiber, and optical signal can not be continuously transmitted, easily
Influenceed by environment temperature, humidity and cleannes；(2) field service life is limited, when fiber end face or grating gap by moisture,
Dust and it is mouldy etc. the sensitivity of sensor and accuracy can be severely impacted when corroding, it is having or even can failure；(3) move
Dynamic measurement is difficult, it is necessary to which parbuckle screw changes the position of sensor.
The content of the invention
It is an object of the invention to provide one kind is simple in construction, traverse measurement is convenient, can be in complicated wild environment condition
Under long-time use and can the abnormal acoustic monitoring of optical-fiber sensing type rail of steady operation pop one's head in.
The technical problems to be solved by the invention are achieved through the following technical solutions：Optical-fiber sensing type rail abnormal sound
Probe is monitored by shell (1), the first guide pipe (2), first support (3), air-vent (4), sponge filter (5), the first breeze way
(6), the second breeze way (7), the second guide pipe (8), second support (9), chamber top (10), the 3rd guide pipe (11), the 3rd support
(12), pipeline (13), rubber case (14), incident optical (15), the output optical fiber (16), leather sheath end (17), groove (18), handle
(19), magnetic lid (20), vibrating membrane (21), bear building-up (22), circular arc bending section (23), the first elastic (24), top knot (25), lightweight
Pad (26), first micro-bend section (27), second micro-bend section (28), accent (29), rib collar (30), waist knot (31), the second elastic
(32) constituted with slipmat (33).
Wherein incident optical (15), the output optical fiber (16), first micro-bend section (27), second micro-bend section (28), circular arc bending
Section (23), the first breeze way (6) and the second breeze way (7) constitute Fibre Optical Sensor mechanism, the first guide pipe (2), first support
(3), the second guide pipe (8), second support (9), the 3rd guide pipe (11), the 3rd support (12), bear building-up (22), top knot (25),
Waist knot (31), the first elastic (24) and the second elastic (32) constitute optical fiber setting mechanism, air-vent (4), sponge filter (5), rubber
Cover (14), leather sheath end (17), magnetic lid (20), lightweight pad (26) and slipmat (33) and constitute subsidiary body.
The intracavitary of the probe provided with incident optical (15), the output optical fiber (16), first micro-bend section (27), second micro-bend section
(28), circular arc bending section (23), the first breeze way (6) and the second breeze way (7), projection of the whole optical fiber of intracavitary on front view
In η shapes, the projection on top view is in be followed successively by incident optical (15), the first breeze way in φ shapes, main optical path direction of advance
(6), first micro-bend section (27), circular arc bending section (23), second micro-bend section (28), the second breeze way (7), the output optical fiber (16).
First support (3) and second support (9), first support are provided with below chamber top (10) and positioned at air-vent (4) both sides
(3) it is respectively arranged below with the first guide pipe (2) and the second guide pipe (8), pipeline (13) with second support (9) and is provided with the 3rd
Frame (12) and the 3rd guide pipe (11), shell (1), first support (3), the material of second support (9) and the 3rd support (12) are equal
For aluminium alloy, the material of the first guide pipe (2), the second guide pipe (8) and the 3rd guide pipe (11) is soft rubber, and first is oriented to
Pipe (2), the second guide pipe (8) and the 3rd guide pipe (11) are equipped with two holes above, and optical fiber sequentially respectively penetrates guide pipe
In two holes.
The elastic of herringbone first (24), the first elastic (24) top are provided between second support (9) and circular arc bending section (23)
End is connected by pushing up knot (25) with second support (9) bottom, and two bottoms of the first elastic (24) pass through bear building-up (22) and circular arc
Bending section (23) is connected, and the angle between the first elastic (24) and vibrating membrane (21) is 60 °, circular arc bending section on front view
(23) relied on using the optical fiber elasticity of first micro-bend section (27) and second micro-bend section (28) above vibrating membrane (21).
The second elastic (32) is provided between first micro-bend section (27) and second micro-bend section (28), the second elastic (32) two ends lead to
Cross waist knot (31) to be connected with first micro-bend section (27) and second micro-bend section (28) respectively, the second elastic (32) and vibrating membrane (21)
Plane is parallel, a diameter of 0.35mm of the first elastic (24) and the second elastic (32) in relaxed state.
Shell (1) top center is provided with air-vent (4), and air-vent (4) is embedded with sponge filter (5), rubber case (14)
One end is provided with leather sheath end (17), and shell (1) bottom, which is provided with, is used for will pop one's head in magnetic lid (20) of the absorption on rail, magnetic lid
(20) bottom is provided with the slipmat (33) for being used for preventing that probe from sliding on rail, and vibrating membrane (21) lower central position has
Help transmit the lightweight pad (26) of sound, the material of lightweight pad (26) is aluminium, and optical fiber is 10 μm/125 μm single mode naked fibres.
Described probe is that, according to fiber microbending loss principle, when rail has abnormal sound, sound is by vaseline and gently
Matter pad (26) passes to vibrating membrane (21), and vibrating membrane (21) makes first micro-bend section (27) different with second micro-bend section (28) generation
The bending of degree, produces different microbending loss, and microbending loss is both first micro-bend section (27) and second micro-bend section (28)
Sum is lost, microbending loss generates intensity modulation to the optical signal in optical fiber, and proportional to the size of rail abnormal sound
Relation, that is, pop one's head in and sensing effect served to the abnormal sound of rail.
Due to using above-mentioned technical proposal, advantage for present invention and good effect are：Optical-fiber sensing type rail is different
Normal acoustic monitoring sonde configuration is simple, sensitivity is big compared with high, anti-interference strong, working stability, long transmission distance, dynamic range, mobile
Measurement is convenient, pops one's head in not by wild environment temperature, humidity, cleannes and electromagnetic interference influence, will not be because of moisture, dust, mouldy
The performance of sensor is influenceed Deng corroding, probe can be used for a long time.
Brief description of the drawings
The present invention has following 3 width accompanying drawing：
Fig. 1 is the front view of this probe,
Fig. 2 is one of top view of this probe optical fiber structure,
Fig. 3 is the two of the top view of this probe optical fiber structure.
Each numeral marked in the accompanying drawings is expressed as follows respectively：
1. shell, 2. first guide pipes, 3. first supports, 4. air-vents, the filter of 5. sponges, 6. first breeze ways, 7. second bufferings
Section, 8. second guide pipes, 9. second supports, 10. chamber tops, 11. the 3rd guide pipes, 12. the 3rd supports, 13. pipelines, 14. rubbers
Set, 15. incident opticals, 16. the output optical fibers, 17. leather sheath ends, 18. grooves, 19. handles, 20. magnetic lids, 21. vibrating membranes,
22. bear building-up, 23. circular arc bending sections, 24. first elastics, 25. top knots, 26. lightweight pads, 27. first micro-bend sections, 28. second is micro-
Curved segment, 29. accents, 30. rib collars, 31. waist knots, 32. second elastics, 33. slipmat.
Embodiment
1. according to Fig. 1 to Fig. 3, optical-fiber sensing type rail exception acoustic monitoring probe is by shell (1), the first guide pipe (2), the
One support (3), air-vent (4), sponge filter (5), the first breeze way (6), the second breeze way (7), the second guide pipe (8), second
Support (9), chamber top (10), the 3rd guide pipe (11), the 3rd support (12), pipeline (13), rubber case (14), incident optical
(15), the output optical fiber (16), leather sheath end (17), groove (18), handle (19), magnetic lid (20), vibrating membrane (21), bear building-up
(22), circular arc bending section (23), the first elastic (24), top knot (25), lightweight pad (26), first micro-bend section (27), second micro-
Curved segment (28), accent (29), rib collar (30), waist knot (31), the second elastic (32) and slipmat (33) composition.
2. wherein incident optical (15), the output optical fiber (16), first micro-bend section (27), second micro-bend section of (28), circular arc are curved
Tune (23), the first breeze way (6) and the second breeze way (7) constitute Fibre Optical Sensor mechanism, the first guide pipe (2), first support
(3), the second guide pipe (8), second support (9), the 3rd guide pipe (11), the 3rd support (12), bear building-up (22), top knot (25),
Waist knot (31), the first elastic (24) and the second elastic (32) constitute optical fiber setting mechanism, air-vent (4), sponge filter (5), rubber
Cover (14), leather sheath end (17), magnetic lid (20), lightweight pad (26) and slipmat (33) and constitute subsidiary body.
3. described in the intracavitary popped one's head in provided with incident optical (15), the output optical fiber (16), first micro-bend section (27), second micro-bend
Section (28), circular arc bending section (23), the first breeze way (6) and the second breeze way (7), throwing of the whole optical fiber of intracavitary on front view
Shadow is in η shapes, and the projection on top view is in be followed successively by incident optical (15), the first breeze way in φ shapes, main optical path direction of advance
(6), first micro-bend section (27), circular arc bending section (23), second micro-bend section (28), the second breeze way (7), the output optical fiber (16).
4. it is provided with first support (3) and second support (9), first below chamber top (10) and positioned at air-vent (4) both sides
Frame (3) and second support (9), which are respectively arranged below with the first guide pipe (2) and the second guide pipe (8), pipeline (13), is provided with the 3rd
Support (12) and the 3rd guide pipe (11), shell (1), first support (3), the material of second support (9) and the 3rd support (12)
It is aluminium alloy, the material of the first guide pipe (2), the second guide pipe (8) and the 3rd guide pipe (11) is soft rubber, first leads
Two holes are equipped with above to pipe (2), the second guide pipe (8) and the 3rd guide pipe (11), optical fiber sequentially respectively penetrates guide pipe
Two holes in.
5. the elastic of herringbone first (24), the first elastic (24) are provided between second support (9) and circular arc bending section (23)
Top is connected by pushing up knot (25) with second support (9) bottom, and two bottoms of the first elastic (24) pass through bear building-up (22) and circle
Arc bending section (23) is connected, and the angle between the first elastic (24) and vibrating membrane (21) is 60 °, circular arc bending section on front view
(23) relied on using the optical fiber elasticity of first micro-bend section (27) and second micro-bend section (28) above vibrating membrane (21).
6. the second elastic (32), the second elastic (32) two ends are provided between first micro-bend section (27) and second micro-bend section (28)
It is connected respectively with first micro-bend section (27) and second micro-bend section (28) by waist knot (31), the second elastic (32) and vibrating membrane (21)
Plane it is parallel, a diameter of 0.35mm of the first elastic (24) and the second elastic (32) in relaxed state.
7. shell (1) top center is provided with air-vent (4), air-vent (4) is embedded with sponge filter (5), rubber case
(14) one end is provided with leather sheath end (17), and shell (1) bottom, which is provided with, is used for will pop one's head in magnetic lid (20) of the absorption on rail, magnetic
Property lid (20) bottom be provided with and be used to prevent the slipmat (33) slided on rail of probe, vibrating membrane (21) lower central position is set
Contribute to the lightweight pad (26) of transmission sound, the material of lightweight pad (26) is aluminium, described optical fiber is 10 μm/125 μ
M single mode naked fibres.
8. the effect of the second elastic (32), which is the downward projection figure for making intracavitary optical fiber, is shaped as φ shapes, the first elastic (24) is removed
Play that setting effect is outer, main effect is easy for the installation of vibrating membrane (21) and magnetic lid (20), in vibrating membrane (21) and
Magnetic lid (20) is loaded onto by rib collar (30) before shell (1), projection of the fiber segment on front view is shaped as wider η
Shape, i.e., before vibrating membrane (21) and magnetic lid (20) load onto shell (1), circular arc bending section (23) from the first breeze way (6) and
Second breeze way (7) it is distant, circular arc bending section (23) is concordant with slipmat (33), when dynamic film (21) and magnetic lid (20)
Load onto after shell (1), dynamic film (21) has flattened η shape fiber segments, so just can guarantee that circular arc bending section (23) utilizes first
The optical fiber elasticity of micro-bend section (27) and second micro-bend section (28) is tight according to above vibrating membrane (21), making first micro-bend section (27) and the
Two micro-bend sections (28) can effectively work.
9. in use, selected measurement point first in orbit, one layer of 1~1.5mm thickness of painting on lightweight pad (26) surface
Vaseline, then will pop one's head in absorption in the upper of the side of the rail web of the rail or the rail flange of rail using the iron effect of inhaling of magnetic lid (20)
Side, vaseline can strengthen the transmission effect of sound, and slipmat (33) can effectively prevent probe from producing small position in rail vibration
Move, the effect of magnetic absorption is easy for the traverse measurement of probe.
10. described in probe be according to fiber microbending loss principle, when rail has abnormal sound, sound by vaseline and
Lightweight pad (26) passes to vibrating membrane (21), and vibrating membrane (21) makes first micro-bend section (27) and second micro-bend section (28) to occur not
With the bending of degree, different microbending loss are produced, microbending loss is both first micro-bend section (27) and second micro-bend section (28)
Loss sum, microbending loss generates intensity modulation to the optical signal in optical fiber, and with the size of rail abnormal sound into than
Example relation, that is, pop one's head in and sensing effect served to the abnormal sound of rail.
11. according to probe detection to sound and compare in empirical value, it can be determined that whether rail has depression, if has and splits
Seam, the steel ball of wheel bearing whether fragmentation etc..
Claims (1)
1. a kind of abnormal acoustic monitoring probe of optical-fiber sensing type rail, by shell (1), the first guide pipe (2), first support (3), thoroughly
Stomata (4), sponge filter (5), the first breeze way (6), the second breeze way (7), the second guide pipe (8), second support (9), chamber top
(10), the 3rd guide pipe (11), the 3rd support (12), pipeline (13), rubber case (14), incident optical (15), the output optical fiber
(16), leather sheath end (17), groove (18), handle (19), magnetic lid (20), vibrating membrane (21), bear building-up (22), circular arc bending section
(23), the first elastic (24), top knot (25), lightweight pad (26), first micro-bend section (27), second micro-bend section of (28), accent
(29), rib collar (30), waist knot (31), the second elastic (32) and slipmat (33) composition；
Wherein incident optical (15), the output optical fiber (16), first micro-bend section (27), second micro-bend section (28), circular arc bending section
(23), the first breeze way (6) and the second breeze way (7) constitute Fibre Optical Sensor mechanism, the first guide pipe (2), first support (3),
Second guide pipe (8), second support (9), the 3rd guide pipe (11), the 3rd support (12), bear building-up (22), top knot (25), waist knot
(31), the first elastic (24) and the second elastic (32) constitute optical fiber setting mechanism, air-vent (4), sponge filter (5), rubber case
(14), leather sheath end (17), magnetic lid (20), lightweight pad (26) and slipmat (33) constitute subsidiary body；
It is characterized in that：The intracavitary of the probe is provided with incident optical (15), the output optical fiber (16), first micro-bend section (27), the
Two micro-bend sections (28), circular arc bending section (23), the first breeze way (6) and the second breeze way (7), the whole optical fiber of intracavitary is in front view
On projection be in η shapes, projection on top view is in be followed successively by incident optical (15), first in φ shapes, main optical path direction of advance
Breeze way (6), first micro-bend section (27), circular arc bending section (23), second micro-bend section (28), the second breeze way (7), the output optical fiber
(16)；
Be provided with first support (3) and second support (9) below chamber top (10) and positioned at air-vent (4) both sides, first support (3) and
Second support (9), which is respectively arranged below with the first guide pipe (2) and the second guide pipe (8), pipeline (13), is provided with the 3rd support
(12) and the 3rd guide pipe (11), the material of shell (1), first support (3), second support (9) and the 3rd support (12) is
Aluminium alloy, the material of the first guide pipe (2), the second guide pipe (8) and the 3rd guide pipe (11) is soft rubber, the first guide pipe
(2), the second guide pipe (8) and the 3rd guide pipe (11) are equipped with two holes above, and optical fiber sequentially respectively penetrates the two of guide pipe
In individual hole；
The elastic of herringbone first (24) is provided between second support (9) and circular arc bending section (23), the first elastic (24) top leads to
Cross top knot (25) to be connected with second support (9) bottom, two bottoms of the first elastic (24) are bent by bear building-up (22) and circular arc
Section (23) connection, the angle between the first elastic (24) and vibrating membrane (21) is 60 ° on front view, circular arc bending section (23) profit
Relied on the optical fiber elasticity of first micro-bend section (27) and second micro-bend section (28) above vibrating membrane (21)；
The second elastic (32) is provided between first micro-bend section (27) and second micro-bend section (28), the second elastic (32) two ends pass through waist
Knot (31) is connected with first micro-bend section (27) and second micro-bend section (28) respectively, the plane of the second elastic (32) and vibrating membrane (21)
It is parallel, a diameter of 0.35mm of the first elastic (24) and the second elastic (32) in relaxed state；
Shell (1) top center is provided with air-vent (4), and air-vent (4) is embedded with sponge filter (5), rubber case (14) one end
Provided with leather sheath end (17), shell (1) bottom, which is provided with, is used for will pop one's head in magnetic lid (20) of the absorption on rail, magnetic lid (20)
Bottom is provided with the slipmat (33) for being used for preventing that probe from sliding on rail, and vibrating membrane (21) lower central position is helped
In the lightweight pad (26) of transmission sound, the material of lightweight pad (26) is aluminium, and described optical fiber is 10 μm/125 μm single modes
Naked fibre.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710533838.0A CN107091685A (en) | 2017-07-03 | 2017-07-03 | Optical-fiber sensing type rail exception acoustic monitoring probe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710533838.0A CN107091685A (en) | 2017-07-03 | 2017-07-03 | Optical-fiber sensing type rail exception acoustic monitoring probe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107091685A true CN107091685A (en) | 2017-08-25 |
Family
ID=59641491
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710533838.0A Withdrawn CN107091685A (en) | 2017-07-03 | 2017-07-03 | Optical-fiber sensing type rail exception acoustic monitoring probe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107091685A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108548566A (en) * | 2018-06-22 | 2018-09-18 | 上海达琪智能科技有限公司 | Optical fiber point type temperature disturbance sensing device and system |
| CN111595432A (en) * | 2020-06-23 | 2020-08-28 | 徐孟然 | Vibration detection mechanism |
| CN116007738A (en) * | 2022-12-27 | 2023-04-25 | 无锡联河光子技术有限公司 | Distributed multichannel sound monitoring device and sound monitoring and restoring system |
-
2017
- 2017-07-03 CN CN201710533838.0A patent/CN107091685A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108548566A (en) * | 2018-06-22 | 2018-09-18 | 上海达琪智能科技有限公司 | Optical fiber point type temperature disturbance sensing device and system |
| CN111595432A (en) * | 2020-06-23 | 2020-08-28 | 徐孟然 | Vibration detection mechanism |
| CN116007738A (en) * | 2022-12-27 | 2023-04-25 | 无锡联河光子技术有限公司 | Distributed multichannel sound monitoring device and sound monitoring and restoring system |
| CN116007738B (en) * | 2022-12-27 | 2023-12-15 | 宁波联河光子技术有限公司 | Distributed multichannel sound monitoring device and sound monitoring and restoring system |
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Application publication date: 20170825 |