CN207197501U - A kind of distributed optical fiber sensing system of surface-type sinking deformation monitoring - Google Patents
A kind of distributed optical fiber sensing system of surface-type sinking deformation monitoring Download PDFInfo
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- CN207197501U CN207197501U CN201721192624.3U CN201721192624U CN207197501U CN 207197501 U CN207197501 U CN 207197501U CN 201721192624 U CN201721192624 U CN 201721192624U CN 207197501 U CN207197501 U CN 207197501U
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Abstract
The utility model discloses a kind of distributed optical fiber sensing system of surface-type sinking deformation monitoring, including information process unit, signal demodulation unit, signal transmission unit, fibre optical sensor, stress sensing optical cable, sedimentation device, first housing, lead, first lock, buffer unit, second housing, storage line chamber, second lock, sleeve, tapered end, string holes, first rotating shaft, second rotating shaft, buckle, neck, back-moving spring and slot, the utility model can realize the real-time monitoring of distributed earth's surface sedimentation and deformation, relative to point type settlement sensor, its monitoring range is distributed wire；Stable performance, accuracy of detection is high, not by electromagnetic interference；Sedimentation dynamic monitoring, sedimentation positioning and classification of sedimentation warning function can be realized；It can realize to monitored area locally sedimentation and the discrimination of bulk settling；Tthe utility model system is simple, is easy to construction, operation and maintenance；Monitoring range is big, it might even be possible to is generalized to dam, residence district and field etc..
Description
Technical field
Optical fiber sensing system is the utility model is related to, specially a kind of distribution of utility model surface-type sinking deformation monitoring
Formula optical fiber sensing system, belongs to technical field of electronic measurement.
Background technology
The traditional monitoring method of subgrade settlement mainly has：Settle plate, single point settlement gage, Settlement Profiler pipe, settlement monitoring stake
Deng.The major defect of these monitoring methods is that installation is complicated, interference construction, influences construction quality, data acquisition is difficult, especially
Be point measurement, information content very little, it is difficult to grasp the change of whole piece subgrade settlement." Chen Guangfu, a kind of novel railway roadbed sink
Drop monitoring technology and inquire into [J] railway constructions 2011:A kind of distributed Brillouin fiber optic sensing technology is given in 90-92. " to use
In the monitoring of subgrade settlement, but the technology does not consider the stretching pooling feature of optical cable, does not consider that optical cable is effective with roadbed yet
With reference to problem.The structural deflection settlement monitoring system based on brillouin distributed optical fiber sensing of application number " 201210381892.5 "
System complicated integral structure, is unfavorable for constructing.The tunnel based on distributing optical fiber sensing of application number " 201510762770.4 "
Optical cable in table settlement monitoring device and monitoring method is excessively complicated, and system does not consider that bulk settling and optical cable stress break feelings
Condition；Therefore a kind of distributed optical fiber sensing system of novel surface formula sinking deformation monitoring is proposed regarding to the issue above.
Utility model content
The utility model concrete technical scheme is as follows：
In order to solve the problems of the prior art, the utility model provides a kind of distribution of surface-type sinking deformation monitoring
Formula optical fiber sensing system, including fibre optical sensor, signal transmission unit, signal demodulation unit and the information processing list being sequentially connected
Member, the fibre optical sensor include stress sensing optical cable, sedimentation device and buffer unit three parts；The sedimentation device includes the
One housing；The first enclosure interior explanatory quad；First case top is provided with the first lock for being secured to connection；Institute
State sedimentation device top to be closely connected with the stress sensing optical cable by latching, the sedimentation device bottom contacts with earth's surface.
Preferably, the buffer unit includes the second hollow housing；Second enclosure interior is provided with storage line chamber；It is described
It is in round slot that storage line chamber both ends, which are provided with its integrally formed two cross section,；Two slots extend respectively into and institute
It is concordant to state the lateral wall of the second housing, two slots are penetrated by storage line chamber；The storage line chamber both ends are respectively equipped with one end
The fixedly sleeved back-moving spring in slot outer wall；Two back-moving spring other ends be respectively fixedly connected be socketed in it is described narrow
The second lock on mouth.
Preferably, first fibre optical sensor of some fibre optical sensors being electrically connected with the signal demodulation unit is grown
Spend for 1 meter.
Preferably, second lock includes the sleeve with slot socket；The sleeve away from the slot one
Side is provided with tapered end；The tapered end is to be formed by two semicylinders by the way that first rotating shaft is be hinged；Described first rotating shaft one end is consolidated
It is scheduled in the cartridges sides and normal thereto；A line connected with the sleeve is formed in the middle part of two semicylinders
Hole；Wherein half cylindrical body outer wall away from the first rotating shaft is connected with buckle by the second axis of rotation；Away from described the
Second half cylindrical body outer wall of one rotating shaft is provided with some and supporting neck of the buckle.
The beneficial effects of the utility model are as follows：The utility model can realize the real-time prison of distributed earth's surface sedimentation and deformation
Survey, relative to point type settlement sensor, its monitoring range is distributed wire；Stable performance, accuracy of detection is high, is not done by electromagnetism
Disturb；Sedimentation dynamic monitoring, sedimentation positioning and classification of sedimentation warning function can be realized；It can realize and monitored area is locally settled
With the discrimination of bulk settling；Tthe utility model system is simple, is easy to construction, operation and maintenance；Monitoring range is big, it might even be possible to pushes away
Extensively arrive dam, residence district and field etc..
Brief description of the drawings
The distributed optical fiber sensing system schematic diagram of Fig. 1 surface-type sinking deformation monitorings；
The distributed optical fiber sensing system operating diagram of Fig. 2 surface-type sinking deformation monitorings；
The distributed optical fiber sensing system workflow schematic diagram of Fig. 3 surface-type sinking deformation monitorings；
Fig. 4 is the utility model buffer unit cross-sectional view；
Fig. 5 is the utility model sedimentation device cross-sectional view；
Fig. 6 is that the utility model second latches overall structure diagram；
Fig. 7 is the utility model lock head structure schematic diagram.
Wherein：1st, information process unit, 2, signal demodulation unit, 3, signal transmission unit, 4, fibre optical sensor, 5, stress
Sensing optic cable, 6, sedimentation device, the 61, first housing, 62, lead, the 63, first lock, 7, buffer unit, the 71, second housing,
72nd, storage line chamber, the 73, second lock, 731, sleeve, 732, tapered end, 733, string holes, 734, first rotating shaft, the 735, second rotating shaft,
736th, buckle, 737, neck, 74, back-moving spring, 75, slot.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describing, it is clear that described embodiment is only the utility model part of the embodiment, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment obtained, belong to the scope of the utility model protection.
Refer to shown in Fig. 1-7, a kind of distributed optical fiber sensing system of surface-type sinking deformation monitoring, including connect successively
Fibre optical sensor 4, signal transmission unit 3, signal demodulation unit 2 and the information process unit 1 connect, the signal transmission unit 3
It is by the signal collection of multichannel optical fiber sensor 4 and is delivered on signal demodulation unit 2；The signal demodulation unit 2 be by
The signal of fibre optical sensor 4 is demodulated as optical wavelength signal；Described information processing unit 1 is through undue by optical wavelength signal
Analysis, displacement sedimentation value is converted into, and classifying alarm is carried out to settling amount；The transmission means uses carrier-wave transmission, signal demodulation
Unit uses CMX7042L4CML models, and information process unit uses Duo i7-4720HQ model processors；The Fibre Optical Sensor
Device 4 includes stress sensing optical cable 5, sedimentation device 6 and the three parts of buffer unit 7；The sedimentation device 6 includes the first housing 61；
The inside explanatory quad 62 of first housing 61；The top of first housing 61 is provided with the first lock 63 for being secured to connection；
The top of sedimentation device 6 is closely connected by lock 63 with the stress sensing optical cable 5, the bottom of sedimentation device 6 and ground
Table contacts；When earth's surface declines, ground settlement pulling force is applied through sedimentation device 6 and is delivered on stress sensing optical cable 5.
As a kind of technical optimization scheme of the present utility model, the buffer unit 7 includes the second hollow housing 71；Institute
State the inside of the second housing 71 and be provided with storage line chamber 72, have the optical cable of certain surplus in storage line intracavitary, and can shrink freely, work as tension
During power, surplus optical cable discharges, and is unlikely to break optical fiber in certain limit；The both ends of storage line chamber 72 are provided with integrally formed with it
Two cross sections are in round slot 75；Two slots 75 extend respectively into puts down with the lateral wall of second housing 71
Together, two slots 75 are penetrated by storage line chamber 72；It is fixedly sleeved in slot that the both ends of storage line chamber 72 are respectively equipped with one end
The back-moving spring 74 of 75 outer walls；Two other ends of back-moving spring 74 are respectively fixedly connected with and are socketed on the slot 75
Second lock 73.
As a kind of technical optimization scheme of the present utility model, some light being electrically connected with the signal demodulation unit 2
First length of fibre optical sensor 4 of fiber sensor 4 is 1 meter, and local sedimentation is happens is that for differentiating earth's surface in logical calculated
Or bulk settling.
As a kind of technical optimization scheme of the present utility model, second lock 73 includes and the slot 75 socket
Sleeve 731；One side of the sleeve 731 away from the slot 75 is provided with tapered end 732；The tapered end 732 is by two semicircles
Cylinder forms by the way that first rotating shaft 734 is be hinged；Described one end of first rotating shaft 734 is fixed on the side of sleeve 731 and therewith
Vertically；A string holes 733 connected with the sleeve 731 is formed in the middle part of two semicylinders；Away from described first turn
The wherein half cylindrical body outer wall of axle 734 is rotatably connected to buckle 736 by the second rotating shaft 735；Away from the first rotating shaft 734
Second half cylindrical body outer wall be provided with some with the supporting neck 737 of the buckle 736, reach the work of the optical cable fixation of break-through
With preventing optical cable from being slid automatically in buffer unit, influence the accuracy of information.
The utility model is when in use：
1. the distributed optical fiber sensing system operating diagram of the surface-type sinking deformation monitoring of the system as shown in Fig. 2
When earth's surface does not settle, all sedimentation devices 6 do not stretch all in original state, all sensors, information
The ground settlement schematic diagram that processing unit is shown is the horizontal linear of 0 coordinate, and earth's surface is in good condition.
2. if ground settlement occurs for sensor 1 and the section of sensor 2, the sedimentation device of the section sinks, the He of sensor 1
Sensor 2 is stretched, and wavelength movement occurs, and the section wavelength amount of movement is converted into the heavy of the section length by information process unit
Depreciation, and be shown in sedimentation deformation schematic diagram as shown in Figure 2, other sections are normal.
3. the workflow of the system is shown in Fig. 3, ground settlement causes sedimentation device to sink, sedimentation device and stress sensing light
Cable closely connects, and so as to drive stress sensing optical cable under tension, buffer unit release partial-length surplus optical cable, prevents stress
Sensing optic cable is pulled off, and the stress of fibre optical sensor shows as wavelength movement, is demodulated by signal demodulation unit, and upload to information
Processing unit, optical information variable quantity is converted into the ess-strain of stress sensing optical cable, is ultimately converted to sedimentation and deformation value, shape
Schematic diagram is settled into distribution.The fibre optical sensor scattered light signal moved by generation wavelength carries out optical time domain positioning, according to heavy
Drop value carrys out analysis and assessment, carries out classifying alarm.
Claims (4)
1. a kind of distributed optical fiber sensing system of surface-type sinking deformation monitoring, including be sequentially connected fibre optical sensor (4),
Signal transmission unit (3), signal demodulation unit (2) and information process unit (1), it is characterised in that：The fibre optical sensor (4)
Including stress sensing optical cable (5), sedimentation device (6) and buffer unit (7) three parts；The sedimentation device (6) includes first shell
Body (61)；The internal explanatory quad (62) of first housing (61)；It is provided with the top of first housing (61) and is secured to connect
First lock (63)；Sedimentation device (6) top is closely connected by latching (63) with the stress sensing optical cable (5),
Sedimentation device (6) bottom contacts with earth's surface.
2. a kind of distributed optical fiber sensing system of surface-type sinking deformation monitoring according to claim 1, its feature exist
In：The buffer unit (7) includes hollow the second housing (71)；Storage line chamber (72) is provided with inside second housing (71)；
It is in round slot (75) that storage line chamber (72) both ends, which are provided with its integrally formed two cross section,；Two slots
(75) extend respectively into concordant with the lateral wall of second housing (71), two slots (75) are passed through by storage line chamber (72)
It is logical；Storage line chamber (72) both ends are respectively equipped with the fixedly sleeved back-moving spring (74) in slot (75) outer wall in one end；Two institutes
State back-moving spring (74) other end and be respectively fixedly connected with the second lock (73) being socketed on the slot (75).
3. a kind of distributed optical fiber sensing system of surface-type sinking deformation monitoring according to claim 1, its feature exist
In：First fibre optical sensor (4) length of some fibre optical sensors (4) being electrically connected with the signal demodulation unit (2)
For 1 meter.
4. a kind of distributed optical fiber sensing system of surface-type sinking deformation monitoring according to claim 2, its feature exist
In：Second lock (73) includes the sleeve (731) with the slot (75) socket；The sleeve (731) is away from described narrow
The one side of mouth (75) is provided with tapered end (732)；The tapered end (732) is to be cut with scissors by two semicylinders by first rotating shaft (734)
Connect and form；Described first rotating shaft (734) one end is fixed on the sleeve (731) side and normal thereto；Two semicircles
A string holes (733) connected with the sleeve (731) is formed in the middle part of cylinder；Away from the first rotating shaft (734) wherein
Half cylindrical body outer wall is rotatably connected to buckle (736) by the second rotating shaft (735)；It is another away from the first rotating shaft (734)
Half cylindrical body outer wall is provided with some and supporting neck (737) of the buckle (736).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721192624.3U CN207197501U (en) | 2017-09-15 | 2017-09-15 | A kind of distributed optical fiber sensing system of surface-type sinking deformation monitoring |
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| CN201721192624.3U CN207197501U (en) | 2017-09-15 | 2017-09-15 | A kind of distributed optical fiber sensing system of surface-type sinking deformation monitoring |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108592871A (en) * | 2018-04-28 | 2018-09-28 | 中国石油天然气集团有限公司 | Storage tank optic foundation settlement detector and system |
| CN109000613A (en) * | 2018-08-22 | 2018-12-14 | 太原理工大学 | A kind of three-dimensional rapid detection system of goaf geology sedimentation |
| CN109724562A (en) * | 2019-01-29 | 2019-05-07 | 张亚如 | A kind of Highway Settlement measuring device |
| CN110132228A (en) * | 2019-05-07 | 2019-08-16 | 哈尔滨工业大学 | A kind of subgrade settlement disease positioning based on flush type distribution optical cable and sedimentation degree characterizing method |
-
2017
- 2017-09-15 CN CN201721192624.3U patent/CN207197501U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108592871A (en) * | 2018-04-28 | 2018-09-28 | 中国石油天然气集团有限公司 | Storage tank optic foundation settlement detector and system |
| CN109000613A (en) * | 2018-08-22 | 2018-12-14 | 太原理工大学 | A kind of three-dimensional rapid detection system of goaf geology sedimentation |
| CN109724562A (en) * | 2019-01-29 | 2019-05-07 | 张亚如 | A kind of Highway Settlement measuring device |
| CN109724562B (en) * | 2019-01-29 | 2021-01-12 | 长沙理工大学 | Highway settlement measuring device |
| CN110132228A (en) * | 2019-05-07 | 2019-08-16 | 哈尔滨工业大学 | A kind of subgrade settlement disease positioning based on flush type distribution optical cable and sedimentation degree characterizing method |
| CN110132228B (en) * | 2019-05-07 | 2021-02-19 | 哈尔滨工业大学 | Roadbed settlement disease positioning and settlement degree characterization method based on embedded distributed optical cable |
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