CN201293693Y - Device for monitoring landslide interior conduit stress based on optical fiber and grating - Google Patents
Device for monitoring landslide interior conduit stress based on optical fiber and grating Download PDFInfo
- Publication number
- CN201293693Y CN201293693Y CNU2008201224118U CN200820122411U CN201293693Y CN 201293693 Y CN201293693 Y CN 201293693Y CN U2008201224118 U CNU2008201224118 U CN U2008201224118U CN 200820122411 U CN200820122411 U CN 200820122411U CN 201293693 Y CN201293693 Y CN 201293693Y
- Authority
- CN
- China
- Prior art keywords
- fiber
- monitoring
- pipeline
- landslide
- gprs
- 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 - Lifetime
Links
Images
Abstract
The utility model relates to a slope internal pipe stress monitoring and warning device, based on fiber grating, belonging to the technical field of stress measurement and pipeline system, which is characterized by comprising a pipeline stress monitoring device, a field monitoring station, and a receiving terminal in office, wherein the output of a pipe fiber grating sensor (3) of the field slope internal pipe stress monitoring device mounted on the slope internal pipe in a certain structure outputs is connected with an automatic light conversion switch (6) connected with the field monitoring station; the output of the automatic light conversion switch (6) is connected with the input of a fiber grating demodulator (7) whose output is connected with the input of an upper computer (8); the output of the upper computer (8) is connected with an GPRS transmission module (9); the GPRS receiving module (10) of the receiving module in office is connected with the input of a lower computer (11); and the output of the lower computer (11) is connected with an alarm (12) and a display.
Description
Technical field
The utility model is a kind of landslide interior conduit monitor for stress based on fiber grating.Relate to and measure stress and piping system technical field.
Background technology
The rock soil mass that is meant the formation slope that comes down is followed the shear action process on the weak face in its underpart and is produced the mass motion phenomenon under action of gravity.Landslide disaster is one of the principal mode that causes the geologic hazard of human life's property loss.Length can reach thousands of kilometers apart from oil transportation or gas pipe line fed distance, passes through numerous geology and geomorphologies unit, often will pass the geologic condition areas with complicated inevitably, as mountain area, permafrost region etc.Because the insufficient or pipe-line construction of route selection brings out the landslide or reasons such as landslide are brought out in earthquake, the pipeline that lays in the mountain area might pass through in movable sliding mass, and the safe operation of pipeline suffers the serious threat on these movable landslides.These are referred to as pipeline landslide in landslide of threat tube safety possibly.
In the past in the pipeline transportation history in 40 years, once repeatedly caused pipeline accident based on the geologic hazard on landslide.Europe natural gas line casualty data group (EGIG) investigation 1970 in the West Europe pipeline accident of calendar year 2001, the 7%th, cause by geologic hazard; 1984 of DOT statistics show that to 2001 natural gas transport data 8.5% accident is caused by geologic hazard; 12% of the pipeline accident of Canada State Energy Resources Commission investigation demonstration influence Canada operation is that geologic hazard causes.The huge landslide that caused by earthquake in March, 1987 makes traverses the fracture that 40km length takes place Ecuador's pipeline, and stopping transportation fortnight, economic loss reaches 700,000,000 dollars.Nineteen ninety-five and winter in 1996,, cause U.S.'s northwest gas transmission line three place's pipelines to rupture because the landslide is brought out in the extra-heavy rainfall in western part, Washington.
The pipeline industry of China be in flourish among, these pipelines are transported to the western abundant petroleum gas of China the east of China mostly, and the most of mountain regions of China have been concentrated in western part of China, the west and south, and pipeline just will pass through seriously area of geologic hazard inevitably.Loyal military gas pipe line Zhong County-Yichang 409 km segment are in eastern west place in Hubei mountain area, Chongqing, and peaks rising one upon another on the mountain peak, the discrepancy in elevation is remarkable, landform, geologic condition complexity, and growing has the geologic hazard of many groups easily to send out the rock stratum, is the location that takes place frequently of landslide, crag avalanche.The blue Chengdu-Chongqing products pipeline Lanzhou that was constructed and put into operation in 2003 is to the Guangyuan section, structure is active, the lithology fragmentation, and the landform cutting is grown, the back input huge fund of going into operation is used for hazards control, still has more than 530 places but investigation in 2007 shows the geologic hazard of threat tube safety.The West-East National Gas Transmission Project main line always is about 4000 kilometers, suffers various geologic hazard serious threats, and the landslide disaster of wherein finding out reaches more than 39 places.
In the face of numerous pipeline landslide disasters, the pipeline operator of China is often taked positive engineering control measure, but also there is the drawback of some in these measures, it at first is the cost height, next is that prevention and cure project is not " putting things right once and for all " yet, the uncertain factor of design and construction is more, moreover the cycle of administering is long.The monitoring then be a kind of efficiently, prophylactico-therapeutic measures cheaply.Italy SNAM company will monitor the main mode of pipeline as the control landslide disaster, and they have carried out reaching the monitoring in 30 years to pipeline, have successfully avoided a large amount of pipeline accidents.After pipelines such as the transfering natural gas from the west to the east of China, loyal military line are gone into operation the landslide is also effectively monitored.
The monitoring of traditional pipeline strain is counted the master with electric resistance wire strain gauge, vibrating string type strain, and relatively poor aspect corrosion-resistant, anti-interference, stability also is difficult to meet the demands.In recent years the distributing optical fiber sensing technology of Xing Qiing (is representative with BOTDR) existing certain application in landslide or pipeline monitoring, but the distributing optical fiber sensing technology because drawbacks limit such as its spatial resolution is low, demodulation cost height its application aspect the pipeline strain monitoring.
The utility model content
A kind of landslide interior conduit monitor for stress that the purpose of this utility model is a kind of spatial resolution height of design, cost is low based on fiber grating.
The utility model proposes a kind of landslide interior conduit monitor for stress based on fiber grating sensing technology.This device adopts fiber grating sensing technology, and the pipeline under the influence of landslide is carried out the pipeline strain monitoring, has realized real-time automatic collecting, remote transmission and automatic analysis of data.
Fiber Bragg Grating (Fiber Bragg Grating, FBG are called for short fiber grating) is the micro optical element that develops rapidly over nearly 20 years, is to utilize the photosensitivity in the optical fiber to make.Photosensitivity in the so-called optical fiber is meant when laser passes through doped fiber, and the refractive index of optical fiber will be with the characteristic of the space distribution generation respective change of light intensity.And the space phase grating that in fibre core, forms, the essence of its effect is exactly (transmission or reflection) wave filter or the catoptron that forms an arrowband in fibre core.
Optical fiber grating sensing is a kind ofly to select reverberator, its back-reflection center wavelength of light λ being scribed the wavelength that forms by optical fiber
BWith grating periods lambda and fiber core refractive index n
EffRelevant, promptly
λ
H＝2n
effΛ
The ultimate principle of FBG optical fiber grating sensing is when temperature, strain, stress or other measured physical quantity around the grating change, will cause the variation of grating cycle or fiber core refractive index, thereby make the centre wavelength of fiber grating produce displacement λ
B,, can obtain the situation of change of measured physical quantity by detecting the displacement situation of grating wavelength.Promptly
Δλ
B＝K
ε·Δε+K
T·ΔT
K in the formula
εBe strain sensing sensitivity coefficient, K
TBe the fiber grating temperature sensor sensitivity coefficient.
For the FBG fibre core is the situation of pure quartz, K
εBe 1pm/u ε, K
TBe 10pm/ ℃.The optical fiber material, write strain and temperature sensing sensitivity coefficient that technology and encapsulating material all can influence FBG, must demarcate above parameter before using.
Fiber grating can be made into various senser elements, is used widely at sensory field.Compare with traditional electric transducer, fiber-optic grating sensor has own unique advantage: 1. sensing head is simple in structure, volume is little, in light weight, shape variable, be fit to imbed in the various large scale structures, but the stress of measurement structure inside, strain and structural damage etc., stability, good reproducibility; 2. and have natural compatibility between the optical fiber, easily be connected with optical fiber, optical loss is low, spectral characteristic good, reliability is high; 3. have non-conducting, little to measured medium influence, have characteristics anticorrosive, anti-electromagnetic interference (EMI) again, be adapted at working in the rugged surroundings; 4. light and handy soft, can in an optical fiber, write a plurality of gratings, constitute sensor array, combine with wavelength-division multiplex and time division multiplex system, realize distributed sensing; 5. metrical information is with Wavelength-encoding, thereby fiber-optic grating sensor is not subjected to the influence of factors such as light-intensity variation, optical fiber connection and coupling loss, the optical polarization variation of light source, the antijamming capability that tool is stronger; 6. high sensitivity, high degree of resolution.
Compare with widely used Brillouin light domain reflectometer BOTDR, the advantage of fiber-optic grating sensor has: 1. pair measurement point can accurately be located, the resolution height; 2. cost is low; 3. can process, encapsulate transducing part, make it be more suitable for on-the-spot rugged surroundings.
Because these advantages, in the Geotechnical Engineering field, fiber-optic grating sensor is easy to imbed in the rock soil mass strain and the temperature to its inside and carries out high resolving power and large-range measuring, and technical advantage is very obvious, especially is embodied in to obtain long-term, pipeline strain data reliably.
The monitoring device of this body stress is made up of the receiving terminal of body monitor for stress, field monitoring station, office as depicted in figs. 1 and 2.Export the automatic light switch 6 that connects the field monitoring station with the on-the-spot body fiber-optic grating sensor 3 that certain version is installed on the interior conduit of landslide, automatically 6 outputs of light switch connect the input of fiber Bragg grating (FBG) demodulator 7, and the output of an end of host computer 8 connects the end input of automatic light switch 6 in addition; The output of fiber Bragg grating (FBG) demodulator 7 also connects the input of bit machine 8; The output of host computer 8 connects GPRS transport module 9, connects the input of next bit computer 11, the output of next bit computer 11 device 12 taking alarm and display by the receiving terminal GPRS receiver module 10 of office.
The electric principle of this device as shown in Figure 3, the PC joint of body fiber-optic grating sensor 3 is connected with the PC joint of light switch 6 with optical fiber, the R232 of light switch 6 directly connects the R232 of bit machine 8, the PC joint of light switch 6 connects the CH1 end of fiber Bragg grating (FBG) demodulator 7SM125, the LAN port of fiber Bragg grating (FBG) demodulator 7SM125 connects the LAN port of bit machine 8, the R232 port of host computer 8 connects the R232 port of GPRS transport module 9 Siemens MC 35i, GPRS transport module 9 is through antenna GSM, GPRS network, received next bit computer 11 is received in the back by R232 R232 by GPRS receiver module 10 antenna GSM, the output of next bit computer 11 is by the R232 of R232 device 12DS-7400 taking alarm, and the output of next bit computer 11 is by the VGA end of VGA termination display.
Body fiber-optic grating sensor 3 pipe on mounting structure be respectively to arrange pipeline monitoring cross section in the both sides of the edge and the center on landslide on landslide, and the spacing in monitoring cross section should not surpass 60m.Evenly arrange that in the periphery in each monitoring cross section of pipeline 14 3 body fiber-optic grating sensors 3 (seeing Fig. 4 and Fig. 5) and 3 body fiber-optic grating sensors 3 are arranged on the plane with pipeline 14 axis normal.When body fiber-optic grating sensor 3 is installed, scrape pipeline 14 anticorrosive coats fully off, and polishing pipeline 14 surfaces are pasted the body fiber-optic grating sensor with Instant cement 3 and are encapsulated 24 packaged body fiber-optic grating sensors 3 to smooth.After treating that three body fiber-optic grating sensor 3 paste Lists are good, the fibre that draws of body fiber-optic grating sensor 3 is caused ground in the lump, and protect.
Draw when pipeline 14 axially bears/during compressive stress, three body fiber-optic grating sensors 3 bear and draw/compressive strain; According to certain algorithm,, can obtain the size and the position of maximum strain on these pipeline 14 cross sections by this cross section three places strain.Based on the steel theory of elasticity, can obtain the size of maximum drawing/compressive stress on pipeline 14 cross sections.The selection in monitoring cross section is very important to monitoring effect.
A large amount of studies show that, the crucial performance of 13 pairs of pipeline 14 imposed stresses that come down just can be judged the acceptable stress state of pipeline 14 in the axial direction preferably to the measurement of pipeline 14 axial stresses.Therefore, the only axial strain of measuring channel 14 of body fiber-optic grating sensor 3.
It is on-the-spot that the field monitoring station is arranged on the landslide, comprises optical Fiber Closure, connects optical cable 5, light switch 6, fiber Bragg grating (FBG) demodulator 7, host computer 8, GPRS transport module 9; By the optical Fiber Closure of fiber-optic grating sensor be connected the fiber-optic grating sensor that optical cable 5 will come down on 13 and receive the light switch 6 of monitoring station, 6 outputs of light switch connect fiber Bragg grating (FBG) demodulator 7, fiber Bragg grating (FBG) demodulator 7 outputs connect bit machine 8, and host computer 8 outputs connect GPRS transport module 9.The optical Fiber Closure of fiber-optic grating sensor be connected will come down fiber-optic grating sensor signal on 13 of optical cable 5 and be transferred to the light switch 6 of monitoring station, light switch 6 is given fiber Bragg grating (FBG) demodulator 7 with conversion of signals, fiber Bragg grating (FBG) demodulator 7 demodulates the centre wavelength displacement of fiber-optic grating sensor and gives host computer 8, host computer 8 calculates the signal that monitoring variable is defeated by GPRS transport module 9 and accepts GPRS transport module 9 automatically and controls, GPRS transport module 9 is transferred to the receiving terminal that is positioned at office with the monitoring variable that host computer 8 calculates by public's cordless communication network, also can accept the signal of receiving terminal, send to next bit computer 11.
Wherein:
Light switch 6: this light switch 6 is selected city's pin product for use;
Fiber Bragg grating (FBG) demodulator 7: the centre wavelength displacement that is used to demodulate fiber-optic grating sensor; Select city's pin product for use;
Host computer 8 and program: the frequency that is used to control fiber Bragg grating (FBG) demodulator 7 demodulation, and the centre wavelength displacement that fiber Bragg grating (FBG) demodulator 7 demodulates calculated monitoring variable automatically, monitoring variable is sent to GPRS transport module 9, and the signal of accepting GPRS transport module 9 is controlled; Host computer 8 is selected city's pin product for use, and program is self-editing;
GPRS transport module 9: be used for each monitoring variable that host computer 8 calculates is transferred to the receiving terminal that is positioned at office by public's cordless communication network, also can accept the signal of receiving terminal, send to next bit computer 11.
The receiving terminal that is positioned at office comprises following 2 parts:
1) the GPRS receiver module 10, are used to receive the monitoring variable that field monitoring station GPRS transport module 9 sends, and are transferred to terminal next bit computer 11, send feedback command also can for on-the-spot GPRS transport module 9;
2) next bit computer 11 and program are used for the signal of download terminal GPRS receiver module 10, and calling program analyzes automatically, and analysis result and alarming threshold value are compared, and implement in the time of necessary to report to the police;
3) alarm 12, are used for when analysis result surpasses alarming threshold value the sound alarm signal taking place; Alarm 12 is by next bit computer 11 and programmed control.
By connecting optical cable 5, sensor signal on the landslide is transferred to light switch 6, light switch 6 is given fiber Bragg grating (FBG) demodulator 7 with conversion of signals, fiber Bragg grating (FBG) demodulator 7 demodulates sensor wavelength centre wavelength displacement and sensing is given host computer 8, host computer 8 is calculated as monitoring variable automatically with the centre wavelength displacement that (FBG) demodulator demodulates, and monitoring variable sent to on-the-spot GPRS transport module 9, GPRS transport module 9 is transferred to terminal GPRS receiver module 10 by public's cordless communication network with signal, terminal GPRS receiver module 10 sends to terminal next bit computer 11, terminal next bit computer 11 provides warning with monitoring variable and alarming threshold value contrast in the time of necessary.
The advantage of this device shows:
1) fiber grating sensing technology is applied to the monitoring of 13 pairs of pipeline 14 acting forces of pipeline landslide, this technology is anti-interference, corrosion-resistant, it is obvious sometimes to be easy to networking etc.; Fiber grating sensing technology is easy to realize auto-real-time monitoring, the spatial resolution height, and cost is lower;
2) pipeline strain monitoring, be in each monitoring cross section 3 sensors to be installed evenly, the maximum strain that draws this monitoring cross section by specific algorithm distributes, and has realized the monitoring purpose with minimum monitoring point, saved cost, also the set-up time of Jian Shaoing reaches the damage to pipeline;
3) monitoring variable is realized by fiber grating sensing technology, is easy to make up monitoring system, is easy to realize the real-time automatic collecting analysis and the long-range issue of pipeline landslide Monitoring Data, and remote live is reported to the police automatically; Avoided loaded down with trivial details artificial image data, reduced time of fire alarming, this to the pipeline emergency measure take most important.
Description of drawings
Fig. 1 constitutes synoptic diagram based on the landslide interior conduit stress monitoring prior-warning device of fiber grating
Fig. 2 is based on the landslide interior conduit stress monitoring prior-warning device theory diagram of fiber grating
Fig. 3 is based on the landslide interior conduit stress monitoring prior-warning device electrical schematic diagram of fiber grating
The installation site synoptic diagram (cross-sectional view) of Fig. 4 body fiber-optic grating sensor 3 on body
The installation site synoptic diagram (outer chart) of Fig. 5 body fiber-optic grating sensor 3 on body
3-body fiber-optic grating sensor wherein
5-optical cable 6-light switch
7-fiber Bragg grating (FBG) demodulator 8-host computer
9-GPRS transport module 10-GPRS receiver module
11-next bit computer 12-alarm
13-landslide 14-pipeline
Embodiment
Embodiment. this example is a test unit, and at a wide 100m, dark 29m, cover on the sliding mass of basement rock and test down.This is made up of the receiving terminal of pipe stress monitoring device, field monitoring station, office based on the landslide interior conduit monitor for stress of fiber grating as depicted in figs. 1 and 2.The body strain fiber-optic grating sensor 3 that is installed in the on-the-spot pipeline strain monitoring device on the interior conduit of landslide with certain version is exported the automatic light switch 6 that connects the field monitoring station, automatically 6 outputs of light switch connect the input of fiber Bragg grating (FBG) demodulator 7, and the output of an end of host computer 8 connects the end input of automatic light switch 6 in addition; The output of fiber Bragg grating (FBG) demodulator 7 also connects the input of bit machine 8; The output of host computer 8 connects GPRS transport module 9, connects the input of next bit computer 11, the output of next bit computer 11 device 12 taking alarm and display by the receiving terminal GPRS receiver module 10 of office.
The electric principle of this system as shown in Figure 3, the PC joint of monitoring body fiber-optic grating sensor 3 is connected with the PC joint of light switch 6 with optical fiber, the R232 of light switch 6 directly connects the R232 of bit machine 8, the PC joint of light switch 6 connects the CH1 end of fiber Bragg grating (FBG) demodulator 7SM125, the LAN port of fiber Bragg grating (FBG) demodulator 7SM125 connects the LAN port of bit machine 8, the R232 port of host computer 8 connects the R232 port of GPRS transport module 9 Siemens MC 35i, GPRS transport module 9 is through antenna GSM, GPRS network, received next bit computer 11 is received in the back by R232 R232 by GPRS receiver module 10 antenna GSM, the output of next bit computer 11 is by the R232 of R232 device 12DS-7400 taking alarm, and the output of next bit computer 11 is by the VGA end of VGA termination display.
Fiber Bragg grating (FBG) demodulator 7 is given in the output signal conducting of the fiber-optic grating sensor of monitoring landslide interior conduit stress, fiber Bragg grating (FBG) demodulator 7 demodulates the centre wavelength displacement of fiber-optic grating sensor and is defeated by host computer 8, and light switch 6 gives the cycle of fiber Bragg grating (FBG) demodulator 7 Continuity signals by host computer 8 controls.Host computer 8 calculates the signal that monitoring variable is defeated by GPRS transport module 9 and accepts GPRS transport module 9 automatically and controls, GPRS transport module 9 is transferred to the receiving terminal GPRS receiver module 10 that is positioned at office with the monitoring variable that host computer 8 calculates by public's cordless communication network, also can accept the signal of receiving terminal, after sending to next bit computer 11 processing, report to the police by the display demonstration and by alarm 12.
Body fiber-optic grating sensor 3 pipe on mounting structure (seeing Fig. 4 and Fig. 5) be in the both sides of the edge on the wide landslide 13 of 100m and pipeline monitoring cross section is respectively arranged in the center on landslide, the spacing in monitoring cross section is 50m.Evenly arrange that in the periphery in each monitoring cross section of pipeline 14 3 body fiber- optic grating sensors 3 and 3 body fiber-optic grating sensors 3 are arranged on the plane with pipeline 14 axis normal.When body fiber-optic grating sensor 3 is installed, scrape pipeline 14 anticorrosive coats fully off, and polishing pipeline 14 surfaces are pasted the body fiber-optic grating sensor with Instant cement 3 and are encapsulated 24 packaged body fiber-optic grating sensors 3 to smooth.After treating that three body fiber-optic grating sensor 3 paste Lists are good, the fibre that draws of body fiber-optic grating sensor 3 is caused ground in the lump, and protect.
Draw when pipeline 14 axially bears/during compressive stress, three body fiber-optic grating sensors 3 bear and draw/compressive strain; According to certain algorithm,, can obtain the size and the position of maximum strain on these pipeline 14 cross sections by this cross section three places strain.Based on the steel theory of elasticity, can obtain the size of maximum drawing/compressive stress on pipeline 14 cross sections.The selection in monitoring cross section is very important to monitoring effect.
Wherein:
Fiber-optic grating sensor: select the fiber-optic grating sensor of design encapsulation voluntarily for use.
The light switch selects for use light to swell SUM-FSW;
The grating demodulation instrument is selected SM125 for use.
It is on-the-spot that the field monitoring station is arranged on the landslide, comprises optical Fiber Closure, connects optical cable 5, light switch 6, fiber Bragg grating (FBG) demodulator 7, host computer 8, GPRS transport module 9; By the optical Fiber Closure of fiber-optic grating sensor be connected optical cable 5 fiber-optic grating sensor of each position that will come down on 13 and receive the light switch 6 of monitoring station, 6 outputs of light switch connect fiber Bragg grating (FBG) demodulator 7, fiber Bragg grating (FBG) demodulator 7 outputs connect bit machine 8, and host computer 8 outputs connect GPRS transport module 9.The optical Fiber Closure of each fiber-optic grating sensor be connected will come down fiber-optic grating sensor signal on 13 of optical cable 5 and be transferred to the light switch 6 of monitoring station, light switch 6 is given fiber Bragg grating (FBG) demodulator 7 with conversion of signals, fiber Bragg grating (FBG) demodulator 7 demodulates the centre wavelength displacement of fiber-optic grating sensor and gives host computer 8, host computer 8 calculates the signal that monitoring variable is defeated by GPRS transport module 9 and accepts GPRS transport module 9 automatically and controls, GPRS transport module 9 is transferred to the receiving terminal that is positioned at office with the monitoring variable that host computer 8 calculates by public's cordless communication network, also can accept the signal of receiving terminal, send to next bit computer 11.
Wherein:
Light switch: select for use light to swell scientific and technological SUM-FSW;
Fiber Bragg grating (FBG) demodulator: select SM125 for use;
Host computer and program: select for use and grind magnificent IPC-610, program is self-editing;
GPRS transport module: Siemens MC 35i
The receiving terminal that is positioned at office comprises following 2 parts:
(1) the GPRS receiver module 10, are used to receive the monitoring variable that field monitoring station GPRS transport module 9 sends, and are transferred to terminal next bit computer 11, send feedback command also can for on-the-spot GPRS transport module 9;
(2) next bit computer 11 and program are used for the signal of download terminal GPRS receiver module 10, and calling program analyzes automatically, and analysis result and alarming threshold value are compared, and implement in the time of necessary to report to the police;
(3) alarm 12, are used for when analysis result surpasses alarming threshold value the sound alarm signal taking place; Alarm 12 is by next bit computer 11 and programmed control.
The principle of work of this system is such, and in 13 active procedures that come down, pipeline 14 bears landslide 13 thrusts and body 14 STRESS VARIATION take place, and measures by body fiber-optic grating sensor 3.
Wherein:
GPRS receiver module 10: select Siemens MC 35i for use;
Next bit computer 11 and program: slave computer is selected for use and is ground magnificent IPC-610; Program is self-editing.
Alarm 12: select Bosch DS-7400 for use.
When monitoring, in 13 active procedures that come down, pipeline 14 bears landslide 13 thrusts and body 14 STRESS VARIATION takes place, and just can measure by body fiber-optic grating sensor 3 with said apparatus.
Through monitoring for a long time, this example is easy to make up monitoring system, is easy to realize the real-time automatic collecting analysis and the long-range issue of pipeline landslide 13 Monitoring Data, and remote live is reported to the police automatically.Avoided loaded down with trivial details artificial image data, reduced time of fire alarming, this to the pipeline emergency measure take most important.
Claims (3)
1. the landslide interior conduit monitor for stress based on fiber grating is characterized in that being made up of the receiving terminal of pipeline strain monitoring device, field monitoring station, office; The body fiber-optic grating sensor (3) that is installed in landslide, the scene interior conduit strain monitoring device on the interior conduit of landslide with certain version is exported the automatic light switch (6) that connects the field monitoring station, automatically light switch (6) output connects the input of fiber Bragg grating (FBG) demodulator (7), and the output of fiber Bragg grating (FBG) demodulator (7) also connects the input of bit machine (8); The output of host computer (8) connects GPRS transport module (9), connects the input of next bit computer (11), the output device taking alarm (12) and the display of next bit computer (11) by the receiving terminal GPRS receiver module (10) of office.
2. a kind of landslide interior conduit monitor for stress according to claim 1 based on fiber grating, the electric principle that it is characterized in that this device is: the PC joint of the body fiber-optic grating sensor (3) of monitoring pipe stress is connected with the PC joint of light switch (6) with optical fiber, the R232 of light switch (6) directly connects the R232 of bit machine (8), the PC joint of light switch (6) connects the CH1 end of fiber Bragg grating (FBG) demodulator (7) SM125, the LAN port of fiber Bragg grating (FBG) demodulator (7) SM125 connects the LAN port of bit machine (8), the R232 port of host computer (8) connects GPRS transport module (9) Siemens MC 35iR232 port, GPRS transport module (9) is through antenna GSM, GPRS network, received the back by GPRS receiver module (10) antenna GSM and receive the R232 of next bit computer (11) by R232, the output of next bit computer (11) is by the R232 of R232 device taking alarm (12) DS-7400, and the output of next bit computer (11) is by the VGA end of VGA termination display;
The output signal of the fiber-optic grating sensor of monitoring pipe stress is defeated by host computer (8) through the centre wavelength displacement that fiber Bragg grating (FBG) demodulator (7) demodulates fiber-optic grating sensor; Host computer (8) calculates the signal that monitoring variable is defeated by GPRS transport module (9) and accepts GPRS transport module (9) automatically and controls, GPRS transport module (9) is transferred to the receiving terminal GPRS receiver module (10) that is positioned at office with the monitoring variable that host computer (8) calculates by public's cordless communication network, also can accept the signal of receiving terminal, after sending to next bit computer (11) processing, report to the police by the display demonstration and by alarm (12).
3. a kind of landslide interior conduit monitor for stress according to claim 1 based on fiber grating, it is characterized in that the mounting structure of body fiber-optic grating sensor (3) on pipeline (14) is: respectively arrange pipeline monitoring cross section in the both sides of the edge on landslide and the center on landslide, and the spacing in monitoring cross section is no more than 60m; Periphery in each monitoring cross section of pipeline (14) is evenly arranged 3 body fiber-optic grating sensors (3), and 3 body fiber-optic grating sensors (3) are arranged on the plane with pipeline (14) axis normal; Body fiber-optic grating sensor (3) is installed in the smooth surface of pipeline (14), pastes body fiber-optic grating sensor encapsulation (24) packaged body fiber-optic grating sensors (3) with Instant cement; The fibre that draws of body fiber-optic grating sensor (3) is caused ground in the lump, and protect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201224118U CN201293693Y (en) | 2008-09-03 | 2008-09-03 | Device for monitoring landslide interior conduit stress based on optical fiber and grating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201224118U CN201293693Y (en) | 2008-09-03 | 2008-09-03 | Device for monitoring landslide interior conduit stress based on optical fiber and grating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201293693Y true CN201293693Y (en) | 2009-08-19 |
Family
ID=41007176
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201224118U Expired - Lifetime CN201293693Y (en) | 2008-09-03 | 2008-09-03 | Device for monitoring landslide interior conduit stress based on optical fiber and grating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201293693Y (en) |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101846242A (en) * | 2010-05-24 | 2010-09-29 | 武汉钢铁(集团)公司 | Method for dealing repeated fracture of industrial pipeline caused by thermal stress |
| CN101852659A (en) * | 2010-05-25 | 2010-10-06 | 上海应用技术学院 | Oil derrick stress data acquisition system based on fiber Bragg grating sensor network |
| CN102346017A (en) * | 2010-07-28 | 2012-02-08 | 中国石油天然气股份有限公司 | System for monitoring horizontal deformation of soil body at worked-out subsidence area |
| CN102346016A (en) * | 2010-07-28 | 2012-02-08 | 中国石油天然气股份有限公司 | Mined-out subsidence area soil horizontal deformation monitoring method and system thereof |
| CN102345798A (en) * | 2010-07-28 | 2012-02-08 | 中国石油天然气股份有限公司 | System for monitoring pipe-soil relative displacement of oil-gas pipeline in mining subsidence area |
| CN102345472A (en) * | 2010-07-28 | 2012-02-08 | 中国石油天然气股份有限公司 | Method and system for monitoring horizontal deformation of soil body in mined-out subsidence area and method for constructing system |
| CN102346012A (en) * | 2010-07-28 | 2012-02-08 | 中国石油天然气股份有限公司 | Mining subsidence area oil gas pipeline pipe soil relative displacement monitoring method, system thereof, and system construction method |
| CN102345795A (en) * | 2010-07-28 | 2012-02-08 | 中国石油天然气股份有限公司 | Method and system for monitoring pipe-soil relative displacement of oil-gas pipeline in mining subsidence area |
| CN103383286A (en) * | 2012-05-04 | 2013-11-06 | 中国石油天然气股份有限公司 | Permafrost region oil-gas pipeline ambient temperature monitoring system |
| CN104613885A (en) * | 2013-11-05 | 2015-05-13 | 中国石油化工股份有限公司 | Tunnel pipeline monitoring and early warning system |
| CN109060205A (en) * | 2018-10-31 | 2018-12-21 | 中船第九设计研究院工程有限公司 | Dock crane stress monitoring system and method based on fiber grating strain induction |
| CN109520666A (en) * | 2019-01-03 | 2019-03-26 | 大连理工大学 | A kind of non-destructive monitoring method of pipeline internal pressure |
| CN110715175A (en) * | 2019-10-25 | 2020-01-21 | 兰州交通大学 | A intelligent monitoring oil and gas pipeline for frozen soil district |
| CN110925602A (en) * | 2019-11-15 | 2020-03-27 | 河海大学 | Oil and gas pipeline corrosion and leakage monitoring and early warning system and method based on OFDR optical fiber sensing |
| CN111993627A (en) * | 2020-08-24 | 2020-11-27 | 福州市长乐区鑫特瑞科技有限公司 | Mold generation device capable of collecting fracture section of pipeline |
-
2008
- 2008-09-03 CN CNU2008201224118U patent/CN201293693Y/en not_active Expired - Lifetime
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101846242B (en) * | 2010-05-24 | 2012-11-14 | 武汉钢铁(集团)公司 | Method for dealing repeated fracture of industrial pipeline caused by thermal stress |
| CN101846242A (en) * | 2010-05-24 | 2010-09-29 | 武汉钢铁(集团)公司 | Method for dealing repeated fracture of industrial pipeline caused by thermal stress |
| CN101852659A (en) * | 2010-05-25 | 2010-10-06 | 上海应用技术学院 | Oil derrick stress data acquisition system based on fiber Bragg grating sensor network |
| CN102346016B (en) * | 2010-07-28 | 2013-11-06 | 中国石油天然气股份有限公司 | Mined-out subsidence area soil horizontal deformation monitoring method and system thereof |
| CN102346017A (en) * | 2010-07-28 | 2012-02-08 | 中国石油天然气股份有限公司 | System for monitoring horizontal deformation of soil body at worked-out subsidence area |
| CN102345472A (en) * | 2010-07-28 | 2012-02-08 | 中国石油天然气股份有限公司 | Method and system for monitoring horizontal deformation of soil body in mined-out subsidence area and method for constructing system |
| CN102346012A (en) * | 2010-07-28 | 2012-02-08 | 中国石油天然气股份有限公司 | Mining subsidence area oil gas pipeline pipe soil relative displacement monitoring method, system thereof, and system construction method |
| CN102345795A (en) * | 2010-07-28 | 2012-02-08 | 中国石油天然气股份有限公司 | Method and system for monitoring pipe-soil relative displacement of oil-gas pipeline in mining subsidence area |
| CN102346016A (en) * | 2010-07-28 | 2012-02-08 | 中国石油天然气股份有限公司 | Mined-out subsidence area soil horizontal deformation monitoring method and system thereof |
| CN102345798A (en) * | 2010-07-28 | 2012-02-08 | 中国石油天然气股份有限公司 | System for monitoring pipe-soil relative displacement of oil-gas pipeline in mining subsidence area |
| CN103383286B (en) * | 2012-05-04 | 2017-02-01 | 中国石油天然气股份有限公司 | Permafrost region oil-gas pipeline ambient temperature monitoring system |
| CN103383286A (en) * | 2012-05-04 | 2013-11-06 | 中国石油天然气股份有限公司 | Permafrost region oil-gas pipeline ambient temperature monitoring system |
| CN104613885A (en) * | 2013-11-05 | 2015-05-13 | 中国石油化工股份有限公司 | Tunnel pipeline monitoring and early warning system |
| CN104613885B (en) * | 2013-11-05 | 2018-06-15 | 中国石油化工股份有限公司 | A kind of tunnel interior conduit monitoring and warning system |
| CN109060205A (en) * | 2018-10-31 | 2018-12-21 | 中船第九设计研究院工程有限公司 | Dock crane stress monitoring system and method based on fiber grating strain induction |
| CN109520666A (en) * | 2019-01-03 | 2019-03-26 | 大连理工大学 | A kind of non-destructive monitoring method of pipeline internal pressure |
| CN110715175A (en) * | 2019-10-25 | 2020-01-21 | 兰州交通大学 | A intelligent monitoring oil and gas pipeline for frozen soil district |
| CN110925602A (en) * | 2019-11-15 | 2020-03-27 | 河海大学 | Oil and gas pipeline corrosion and leakage monitoring and early warning system and method based on OFDR optical fiber sensing |
| CN110925602B (en) * | 2019-11-15 | 2021-09-24 | 河海大学 | Oil and gas pipeline corrosion and leakage monitoring and early warning system and method based on OFDR optical fiber sensing |
| CN111993627A (en) * | 2020-08-24 | 2020-11-27 | 福州市长乐区鑫特瑞科技有限公司 | Mold generation device capable of collecting fracture section of pipeline |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201293693Y (en) | Device for monitoring landslide interior conduit stress based on optical fiber and grating | |
| CN101667326B (en) | Method and system for monitoring and warning influence of landslide on pipeline | |
| CN201278198Y (en) | Monitoring pre-warning system for influence of landslide to pipeline | |
| CN101667327B (en) | Method and system for monitoring and warning pipeline landslide depth displacement and method for constructing system | |
| CN101667328B (en) | Method and system for monitoring and warning pipeline landslide surface displacement and method for constructing system | |
| CN101667324B (en) | Method and system for monitoring and warning pipeline landslide and method for constructing system | |
| CN201278199Y (en) | Pipeline landslide deep displacement monitoring pre-alarming system based on fiber grating | |
| CN201278201Y (en) | Pipeline landslide monitoring pre-alarming system based on fiber grating | |
| CN101592475B (en) | Fully distributed fiber Rayleigh and Raman scattering photon strain and temperature sensor | |
| CN110912605B (en) | Safety monitoring and early warning device and method for optical cable or photoelectric composite cable | |
| CN103513147B (en) | A kind of undersea cable real-time monitoring system and monitoring method | |
| CN102345795B (en) | Method and system for monitoring pipe-soil relative displacement of oil-gas pipeline in mining subsidence area | |
| CN102346016B (en) | Mined-out subsidence area soil horizontal deformation monitoring method and system thereof | |
| CN109595470B (en) | Distributed pipeline detection method | |
| CN202139617U (en) | System for monitoring power transmission line pole tower foundation settlement based on single-point displacement | |
| CN201885733U (en) | Ultra-long-range fully-distributed optical fiber Rayleigh and Raman scattering sensor fused with optical fiber Raman frequency shifter | |
| CN101696639A (en) | Fiber mine water inrush precursor information monitor | |
| CN102345472A (en) | Method and system for monitoring horizontal deformation of soil body in mined-out subsidence area and method for constructing system | |
| CN201507323U (en) | Optical fiber coal mine water inrush precursor information monitor | |
| CN103940360A (en) | Strain monitoring device based on cascade chirped fiber gratings | |
| CN102080954A (en) | Ultra-long range 100km decentralized optical fiber Rayleigh and Raman scattering sensor | |
| CN103528749B (en) | Based on coal mine tunnel top board hydraulic pressure on-line monitoring system and the method for fiber grating | |
| CN102080953A (en) | Ultra-long-range (ULR) full-distributed optical Rayleigh and Raman scattering sensor fused with optical Raman frequency shifter | |
| CN201322605Y (en) | Temperature self-compensating fiber grating strain sensor | |
| CN201935670U (en) | Ultra long-range 100km full-distributed optical fiber Rayleigh and Raman scattering sensor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090819 |
|
| CX01 | Expiry of patent term |