CN106610502A - A buried communication optical cable ground location rapid and accurate search method - Google Patents
A buried communication optical cable ground location rapid and accurate search method Download PDFInfo
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- CN106610502A CN106610502A CN201510703874.8A CN201510703874A CN106610502A CN 106610502 A CN106610502 A CN 106610502A CN 201510703874 A CN201510703874 A CN 201510703874A CN 106610502 A CN106610502 A CN 106610502A
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Abstract
According to a buried communication optical cable ground location rapid and accurate search method, by designing the crossed multi-point vibration test method in a two-dimensional plane, the accurate measurement of the ground location of the buried optical cable is carried out, and the method of searching through excavation is avoided, thereby improving the efficiency of optical cable positioning.
Description
Technical field
The invention belongs to communications optical cable localization of fault measurement, the position measurement of vibration and communication fortune
Row maintenance technology field, and in particular to a kind of buried optical fiber cables ground location is quick and precisely searched
Method.
Background technology
At present, in the positioning and search procedure of fault points of optical cables, enter frequently with OTDR instrument
Row abort situation is measured.
OTDR also known as optical time domain reflection technology, the technology by measure fibre optical transmission light pulse,
The Rayleigh scattering and and Fresnel of trouble point initiation are run into when propagating in a fiber using light pulse
Reflex, realizes the detection to optical fiber attenuation and breakpoint, and according to pulse launch time to inspection
Measuring the time that anomalous scattering or reflected light signal consumed realizes attenuation points in optical fiber, breakpoint bit
The range measurement put.The OTDR systems are requisite in optical cable construction, maintenance and monitoring
Instrument.
But the numerical value be given due to OTDR instrument is the length of optical fibre in optical cable, however, optical fiber
Length is not the length for being equal to Optical Cable actual ground, and reason is as follows：First, due to light
There are certain bending, therefore the length of optical fiber more than the length of optical cable in the fine protection modeling pipe in optical cable
Degree, second, during optical cable construction, optical cable random bend in ditch, therefore the length of optical cable
More than the length of optical cable ditch, third, optical cable is in construction, fiber cable joint position often has one
The disk of measured length is stayed.Therefore OTDR instrument is given optical path length (the namely reality of optical fiber
Length) numerical value buries the actual ground length of route more than optical cable, for fiber optic cable maintenance people
For member, by the length of OTDR instrument measurements fiber failure point, it is impossible to be accurately determined
The corresponding ground physical location of fault points of optical cables, and further trouble point ground location is searched,
One ground location of fiber lengths Numerical value be given according to OTDR instrument is accomplished by, is estimated
Error is general all at tens meters to hundreds of rice, that is to say, that want to dig out fault points of optical cables, needs
Tens meters to hundreds of meter of ground ditch is excavated, this lookup method is great in constructing amount, and in a large number
Destruction ground vegetation and crops, cause substantial amounts of construction to compensate, and construction cost is high, construction week
Phase length (time for finding a trouble point is usually more than ten hour, several days to tens days),
Rectification efficiency is very low, has a strong impact on fiber optic cable communications network communication quality.
Coherent light vibration detection technology is a kind of vibration detection technology based on the interference of light, the skill
Art produces interference using the scattering that super-narrow line width laser pulse occurs in a fiber to vibration sensing
Phenomenon, it is possible to achieve the distributed sensing of the vibration environment along the line to optical fiber, by optical time domain
Reflection technology realizes the positioning of vibration event.Can be to optical cable using coherent light vibration detection technology
Neighbouring vibration signal accurately detected and positioned, especially for buried cable, by
Optical cable ditch earth's surface applies artificial vibration, and current point is gone out to the location estimation of vibration event according to system
Cable length.But coherent rayleigh vibration detection technology can not detect the fault points of optical cables of static state
Or breakpoint, therefore cannot be used for lookup and the positioning of fault points of optical cables.
By carrying out to existing coherent light vibration detection technology system and tradition OTDR systems
On the basis of transformation, it is possible to achieve to detecting while ground surface vibration, fault points of optical cables position,
But due to the Vibration propagation attenuation degree of the different initiations of the possible larger, geology of the optical cable depth of burying
The reason for totally different and vibration detecting system has higher sensitivity, is accurately finding out buried Communication ray
Cable for landscape position on also there is larger error.
The content of the invention
It is an object of the invention to provide a kind of buried optical fiber cables ground location quick and precisely lookup method,
By being transformed in existing coherent light vibration detection technology system and tradition OTDR systems
On the basis of, it is possible to achieve to detecting while ground surface vibration, fault points of optical cables position, this
Bright method provides a kind of criterion and method that can be accurately positioned vibration event position, provides vibration
The exact position of event, is to realize the no-dig technique mode of communications optical cable trouble point looking into rapidly and efficiently
Offer support is provided.
In order to overcome deficiency of the prior art, the invention provides a kind of buried optical fiber cables ground
The solution of face position quick and precisely lookup method, it is specific as follows：
In ground surface vibration test, stay due to there may be reel, the optical cable depth of burying and shake
The reasons such as source strength, the scope affected by vibration that system is picked up is probably a larger region,
Therefore in order to accurately find out trouble point landscape position, can adopt in earth's surface two dimensional surface
The mode of decussation multi-point sampler, determines according to the oscillation intensity peak of system test and buries
The accurate earth's surface trend of ground optical cable and position directly above.
A kind of buried optical fiber cables ground location quick and precisely lookup method, first according to buried
Optical cable land marking finds a general trend, along vertical optical cable trend according to it is certain away from
Sow discord every the vibration-testing for selecting multiple points to carry out ground, by response results of the system to vibration
Grow from weak to strong again by the preliminary about position for determining buried cable to the whole process such as weak by force.Then
The direction reselection of vertical test point line before this is selected centered on the most strong vibration point selected
Multiple test points, by system response, further the checking direction is really optical cable trend, then is remembered
The vibratory response point of maximum intensity in newest test is recorded, the position is the surface ground of buried cable
Epi-position is put, and site error is generally less than 1m, and the earth's surface for realizing buried cable position is accurately fixed
Position.
It is an advantage of the current invention that：By multiple vibration positions being carried out with response test and most being rung by force
Lookup should be put, buried cable can be fast and accurately realized in the case where ground excavation is not carried out
The accurate lookup of position, search efficiency is high, position error is little.
Description of the drawings
Fig. 1 is the principle schematic of embodiments of the invention.
Specific embodiment
Optical cable is applied to for testing equipment while existing ground surface vibration, fault points of optical cables position
The problem that abort situation detection runs into, the inventive method provides one kind and can be accurately positioned optical cable position
The criterion put and algorithm, provide the ground exact position of optical cable, realize communications optical cable trouble point
The lookup rapidly and efficiently of no-dig technique mode.
The content of the invention is described further with reference to the accompanying drawings and examples：
Buried optical fiber cables ground location quick and precisely lookup method, its method of testing and process are such as
Shown in Fig. 1, first according to optical cable identifying determine one about optical cable trend, along perpendicular to
Optical cable trend direction select multiple test points at equal intervals, to select 3 test points as a example by carry out
The explanation of method, test point A, B, the C for such as selecting is strong by vibration test system response
The difference of degree, the process of A to C is to die down again from weak to strong, i.e. the sound of oscillation point A and C
Oscillation point B should be all weaker than, it is known that optical cable is located at oscillation point B close beneaths.Of course for raising
Test accuracy can select more dense, the more test points in interval.
Then with B points as midpoint, then edge is estimated with the vertical direction of test point line just now
Optical cable to walk select upwards multiple test points, test point D, E, F such as in accompanying drawing, by vibration
Further clear and definite optical cable is moved towards for intensity response test, is realized again by vibratory response most strong position
Exact position directly over optical cable is finely adjusted, optical cable burial place is found out.
The above, is only presently preferred embodiments of the present invention, not makees any to the present invention
Pro forma restriction, although the present invention is disclosed above with preferred embodiment, but and is not used to
Limit the present invention, any those skilled in the art, without departing from technical solution of the present invention
In the range of, become when making a little change using the technology contents of the disclosure above or being modified to equivalent
The Equivalent embodiments of change, as long as being without departing from technical solution of the present invention content, according to the present invention's
Technical spirit, within the spirit and principles in the present invention, any letter that above example is made
Single modification, equivalent and improve etc., still fall within the protection domain of technical solution of the present invention
Within.
Claims (1)
1. a kind of buried optical fiber cables ground location quick and precisely lookup method, it is characterised in that
First a general trend is found according to buried cable land marking, along vertical optical cable trend
The vibration-testing for selecting multiple points to carry out ground is spaced according to a certain distance, by system to shaking
Dynamic response results grow from weak to strong again by the whole process such as weak determining the preliminary of buried cable by force
About position.Then vertical test point line before this is selected centered on the most strong vibration point selected
The multiple test points of direction reselection, by system response, further the checking direction is light really
Cable is moved towards, and re-records the vibratory response point of maximum intensity in newest test, and the position is buried light
The surface landscape position of cable, site error is generally less than 1m, realizes buried cable position
Earth's surface be accurately positioned.
Priority Applications (1)
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| CN201510703874.8A CN106610502A (en) | 2015-10-26 | 2015-10-26 | A buried communication optical cable ground location rapid and accurate search method |
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| CN201510703874.8A CN106610502A (en) | 2015-10-26 | 2015-10-26 | A buried communication optical cable ground location rapid and accurate search method |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108387889A (en) * | 2018-04-04 | 2018-08-10 | 广东电网有限责任公司 | A kind of ground determines the device of power cable fore-and-aft distance |
| CN108519216A (en) * | 2018-04-12 | 2018-09-11 | 金帆智华（北京）科技有限公司 | A kind of optical cable recognition methods based on ground surface vibration frequency |
| EP3715818A1 (en) * | 2019-03-28 | 2020-09-30 | Viavi Solutions France SAS | Fiber optic cable location system and method |
| US11187617B2 (en) | 2019-03-28 | 2021-11-30 | Viavi Solutions France SAS | Fiber optic cable location system and method |
| CN114172567A (en) * | 2020-09-10 | 2022-03-11 | 中国石油天然气股份有限公司 | Method and device for positioning fault point in optical fiber |
| CN114370925A (en) * | 2021-12-06 | 2022-04-19 | 南京大学 | Method for determining distributed optical fiber sensing channel |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003003789A (en) * | 2001-06-27 | 2003-01-08 | Okumura Corp | Evaluation method of property of tunnel excavated natural ground |
| CN1693924A (en) * | 2005-05-25 | 2005-11-09 | 南京工业大学 | Method for detecting run of underground metal pipeline |
| CN101344595A (en) * | 2008-09-09 | 2009-01-14 | 北京圣德金鉴科技有限公司 | Shield excitation quantitative determination probe and method thereof |
| CN102252168A (en) * | 2011-07-19 | 2011-11-23 | 华电能源股份有限公司 | Accurate positioning and detecting method and device for damages of underground metal pipeline anticorrosive coating |
| CN102621582A (en) * | 2012-03-27 | 2012-08-01 | 淄博威特电气有限公司 | Method for detecting positions of underground metal pipelines by aid of space vector method and device |
-
2015
- 2015-10-26 CN CN201510703874.8A patent/CN106610502A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003003789A (en) * | 2001-06-27 | 2003-01-08 | Okumura Corp | Evaluation method of property of tunnel excavated natural ground |
| CN1693924A (en) * | 2005-05-25 | 2005-11-09 | 南京工业大学 | Method for detecting run of underground metal pipeline |
| CN101344595A (en) * | 2008-09-09 | 2009-01-14 | 北京圣德金鉴科技有限公司 | Shield excitation quantitative determination probe and method thereof |
| CN102252168A (en) * | 2011-07-19 | 2011-11-23 | 华电能源股份有限公司 | Accurate positioning and detecting method and device for damages of underground metal pipeline anticorrosive coating |
| CN102621582A (en) * | 2012-03-27 | 2012-08-01 | 淄博威特电气有限公司 | Method for detecting positions of underground metal pipelines by aid of space vector method and device |
Non-Patent Citations (2)
| Title |
|---|
| 乌效鸣等: "《导向钻进与非开挖铺管技术》", 31 October 2004, 中国地质大学出版社 * |
| 夏海峰: "地下金属管线探测仪的研制", 《中国优秀硕士学位论文全文数据库 工程科技Ⅱ辑》 * |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108387889A (en) * | 2018-04-04 | 2018-08-10 | 广东电网有限责任公司 | A kind of ground determines the device of power cable fore-and-aft distance |
| CN108387889B (en) * | 2018-04-04 | 2024-01-16 | 广东电网有限责任公司 | Device for determining longitudinal distance of power cable on ground |
| CN108519216A (en) * | 2018-04-12 | 2018-09-11 | 金帆智华（北京）科技有限公司 | A kind of optical cable recognition methods based on ground surface vibration frequency |
| EP3715818A1 (en) * | 2019-03-28 | 2020-09-30 | Viavi Solutions France SAS | Fiber optic cable location system and method |
| US11187617B2 (en) | 2019-03-28 | 2021-11-30 | Viavi Solutions France SAS | Fiber optic cable location system and method |
| US11846563B2 (en) | 2019-03-28 | 2023-12-19 | Viavi Solutions France SAS | Fiber optic cable location system and method |
| CN114172567A (en) * | 2020-09-10 | 2022-03-11 | 中国石油天然气股份有限公司 | Method and device for positioning fault point in optical fiber |
| CN114172567B (en) * | 2020-09-10 | 2023-04-25 | 中国石油天然气股份有限公司 | Method and device for positioning fault point in optical fiber |
| CN114370925A (en) * | 2021-12-06 | 2022-04-19 | 南京大学 | Method for determining distributed optical fiber sensing channel |
| CN114370925B (en) * | 2021-12-06 | 2022-10-18 | 南京大学 | Method for determining distributed optical fiber sensing channel |
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