CN202049011U - Fiber grating pull sensor for flexible rockfall protective net - Google Patents
Fiber grating pull sensor for flexible rockfall protective net Download PDFInfo
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- CN202049011U CN202049011U CN2011201260987U CN201120126098U CN202049011U CN 202049011 U CN202049011 U CN 202049011U CN 2011201260987 U CN2011201260987 U CN 2011201260987U CN 201120126098 U CN201120126098 U CN 201120126098U CN 202049011 U CN202049011 U CN 202049011U
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- elastic body
- fiber grating
- rolling stone
- pulling force
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Abstract
The utility model provides a fiber grating pull sensor for a flexible rockfall protective net, having the advantages of low cost, simpleness, practicability, electromagnetic interference prevention and good stability. The fiber grating pull sensor comprises an elastic body (10); two ends of the elastic body (10) are connected with an upper supporting rope and an upper anchoring rope on the flexible rockfall protective net respectively; two through holes (11, 12) are arranged at intervals on the elastic body (10) along the pulling direction of the elastic body (10); a first fiber grating (21) is fixed between the two through holes (11, 12); and a second fiber grating (22) is transversely fixed at the external side of the through hole (12) along the elastic body (10).
Description
Technical field
The utility model relates to Fibre Optical Sensor, particularly a kind of be used for measuring automatically the flexible online supporting rope of passive protection of mountain railway Rolling Stone and on draw the fiber grating pulling force sensor of anchor line pulling force.
Background technology
China is mountain region big country, and geologic hazards such as landslide, avalanche falling rocks, rubble flow are comparatively frequent, and transportation by railroad is high by the loss that disaster causes every year.Along with the fast development of China Express Railway, railway geologic hazard monitoring and warning along the line technology more obtains paying attention to.For guaranteeing safe train operation, passenger dedicated railway line should be provided with the safety monitoring system of taking precautions against natural calamities, should monitor disaster and foreign body intrusion etc. as required, and provide and close the data (decision informations such as early warning, speed limit, stoppage in transit) of taking precautions against natural calamities, for train operation plan adjustment, driving control provide foundation.Rolling Stone is one of main hazards form, has had a strong impact on the safe operation of train.
Aspect the protection of crag falling rocks, the application of flexible passive protection net is more and more extensive, and mountain area high-speed railway particularly, crag falling rocks are grown the location and all be provided with a large amount of flexible passive protection nets.But flexible passive protection net is not what be perfectly safe, if the falling rocks impact energy surpasses the protective capacities of protection network, break through protection network and enter railway or highway, bring heavy losses certainly will for transportation by railroad and people's lives and properties, therefore, need be on protection network sensor installation, the Rolling Stone impact condition that the induction protection network is subjected to, judge the safe condition of protection network, so that in time report to the police.
The flexible passive protection net of railway or highway generally is in the high gradient slope location of remote mountain areas, and traditional electrical sensor is subjected to the interference of wet environment erosion and thunder and lightning easily, and mission life is short, failure rate height, poor reliability; Simultaneously, electrical sensor needs on-the-spot power supply, and signal can not carry out remote transmission, can't satisfy the monitoring requirement of remote mountain areas intelligent protection net.
The utility model content
Technical problem to be solved in the utility model provides the flexible passive protection net of a kind of Rolling Stone fiber grating pulling force sensor, has the characteristics of low, simple and practical, anti-electromagnetic interference (EMI) of cost and good stability.
The technical scheme that its technical matters that solves the utility model adopts is as follows:
Rolling Stone flexible anti protecting wire net of the present utility model is used up fine grating pulling force sensor, it is characterized in that: it comprise two ends respectively with the online supporting rope of Rolling Stone flexible protective with on draw anchor line to be connected elastic body, its tension direction of this elastic body upper edge is spaced apart to be provided with two through holes, on the position between two through holes, fixedly install first fiber grating, laterally fixedly install second fiber grating in the through hole outside along elastic body.
The beneficial effects of the utility model are that as senser element, cost is low, and is simple and practical with fiber grating, anti-electromagnetic interference (EMI), good stability; This sensor adopts diplopore, double grating structural design, has temperature compensation function; A plurality of sensors can be connected in series, and form the sensing network of multimetering.
Description of drawings
This instructions comprises following two width of cloth accompanying drawings:
Fig. 1 is the structural representation that the utility model Rolling Stone flexible anti protecting wire net is used up fine grating pulling force sensor;
Fig. 2 is the cut-open view along A-A line among Fig. 1.
Parts shown in the figure, toponym and pairing mark: elastic body 10, through hole 11, through hole 12, connecting hole 13, connecting hole 14, line hole 15, counterbore 16, first fiber grating 21, second fiber grating 22, optical fiber 23, upper cover plate 31, lower cover 32.
Embodiment
Below in conjunction with drawings and Examples the utility model is further specified.
With reference to Fig. 1, Rolling Stone flexible anti protecting wire net of the present utility model is used up fine grating pulling force sensor, comprise two ends respectively with the online supporting rope of Rolling Stone flexible protective with on draw anchor line to be connected elastic body 10, spaced apart two through holes 11,12 that are provided with of this its tension direction of elastic body 10 upper edges, on the position between two through holes 11,12, fixedly install first fiber grating 21, laterally fixedly install second fiber grating 22 in a through hole 12 outsides along elastic body 10.In use, when Rolling Stone bump flexible anti protecting wire net, the upper support rope and on draw anchor line that the elastic body two ends are applied pulling force, tensile strain is experienced in two through hole 11,12 sides, experience compressive strain in the middle of two through holes 11,12, the reflection wavelength of first fiber grating 21, second fiber grating 22 relatively moves.The size of the suffered pulling force of two wavelength variable quantity differences reflection sensor is eliminated the change amount in the same way of two grating wavelengths that temperature causes simultaneously, realizes temperature compensation function.Optical wavelength signal is sent into computing machine again and is handled and store by the identification of optic fiber grating wavelength (FBG) demodulator, carries out Rolling Stone monitoring in real time and reports to the police.
With reference to Fig. 2, for protecting first fiber grating 21, second fiber grating 22 effectively, described elastic body 10 is offered counterbore 16, the first fiber gratings 21 outside two through holes, 11,12 positions, second fiber grating 22 is pasted and fixed on the bottom surface of this counterbore 16.The upper surface of described elastic body 10 detachably is provided with the upper cover plate 31 that is used to seal counterbore 16 upper port, detachably is provided with the lower cover 32 that is used to seal two through hole 11,12 lower port on lower surface.
With reference to Fig. 2, described elastic body 10 horizontal sides offer the line hole 15 that communicates with counterbore 16, draw outside the elastic body 10 through this line hole 15 with the optical fiber 23 that first fiber grating 21, second fiber grating 22 are connected.With reference to Fig. 1, described elastic body 10 offers connecting hole 13,14 respectively along the two ends of tension direction, the online supporting rope of Rolling Stone flexible protective and on draw anchor line to be connected on the hole 13,14 by wire rope.
The above some principle that the utility model Rolling Stone flexible anti protecting wire net is used up fine grating pulling force sensor that just explain through diagrams, be not be the utility model to be confined to shown in and in described concrete structure and the scope of application, so every the corresponding modify and equivalent that might be utilized all belongs to the claim that the utility model is applied for.
Claims (5)
1. Rolling Stone flexible anti protecting wire net is used up fine grating pulling force sensor, it is characterized in that: it comprise two ends respectively with the online supporting rope of Rolling Stone flexible protective with on draw anchor line to be connected elastic body (10), spaced apart two through holes (11,12) that are provided with of its tension direction of this elastic body (10) upper edge, on the position between two through holes (11,12), fixedly install first fiber grating (21), laterally fixedly install second fiber grating (22) in a through hole (12) outside along elastic body (10).
2. Rolling Stone flexible anti protecting wire net as claimed in claim 1 is used up fine grating pulling force sensor, it is characterized in that: described elastic body (10) is offered counterbore (16) outside two through holes (11,12) position, first fiber grating (21), second fiber grating (22) are pasted and fixed on the bottom surface of this counterbore (16).
3. Rolling Stone flexible anti protecting wire net as claimed in claim 2 is used up fine grating pulling force sensor, it is characterized in that: the horizontal side of described elastic body (10) offers the line hole (15) that communicates with counterbore (16), and the optical fiber (23) that is connected with first fiber grating (21), second fiber grating (22) is drawn outside the elastic body (10) through this line hole (15).
4. use up fine grating pulling force sensor as claim 2 or 3 described Rolling Stone flexible anti protecting wire nets, it is characterized in that: the upper surface of described elastic body (10) detachably is provided with the upper cover plate (31) that is used to seal counterbore (16) upper port, detachably is provided with the lower cover (32) that is used to seal two through holes (11,12) lower port on lower surface.
5. Rolling Stone flexible anti protecting wire net as claimed in claim 1 is used up fine grating pulling force sensor, it is characterized in that: described elastic body (10) offers connecting hole (13,14) respectively along the two ends of tension direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201260987U CN202049011U (en) | 2011-04-26 | 2011-04-26 | Fiber grating pull sensor for flexible rockfall protective net |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201260987U CN202049011U (en) | 2011-04-26 | 2011-04-26 | Fiber grating pull sensor for flexible rockfall protective net |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202049011U true CN202049011U (en) | 2011-11-23 |
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ID=44989317
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201260987U Expired - Lifetime CN202049011U (en) | 2011-04-26 | 2011-04-26 | Fiber grating pull sensor for flexible rockfall protective net |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202049011U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103983384A (en) * | 2013-02-08 | 2014-08-13 | 同方威视技术股份有限公司 | Fiber bragg grating tension sensor |
| CN103985225A (en) * | 2013-02-08 | 2014-08-13 | 同方威视技术股份有限公司 | Intelligent monitoring system for flexible passive protective net |
| CN105823588A (en) * | 2016-04-20 | 2016-08-03 | 山东大学 | Impact force testing device for landslide model test |
| CN111721220A (en) * | 2020-05-07 | 2020-09-29 | 成都伊莱特光测科技有限公司 | Debris flow optical fiber monitoring device |
-
2011
- 2011-04-26 CN CN2011201260987U patent/CN202049011U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103983384A (en) * | 2013-02-08 | 2014-08-13 | 同方威视技术股份有限公司 | Fiber bragg grating tension sensor |
| CN103985225A (en) * | 2013-02-08 | 2014-08-13 | 同方威视技术股份有限公司 | Intelligent monitoring system for flexible passive protective net |
| CN103985225B (en) * | 2013-02-08 | 2016-12-28 | 同方威视技术股份有限公司 | Flexible passive protection net intelligent monitor system |
| CN105823588A (en) * | 2016-04-20 | 2016-08-03 | 山东大学 | Impact force testing device for landslide model test |
| CN111721220A (en) * | 2020-05-07 | 2020-09-29 | 成都伊莱特光测科技有限公司 | Debris flow optical fiber monitoring device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111123 |