CN113281006A - Optical cable fault rapid positioning method based on thermal infrared detection technology - Google Patents
Optical cable fault rapid positioning method based on thermal infrared detection technology Download PDFInfo
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- CN113281006A CN113281006A CN202110527455.9A CN202110527455A CN113281006A CN 113281006 A CN113281006 A CN 113281006A CN 202110527455 A CN202110527455 A CN 202110527455A CN 113281006 A CN113281006 A CN 113281006A
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- 230000003287 optical effect Effects 0.000 title claims abstract description 68
- 238000001514 detection method Methods 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000005516 engineering process Methods 0.000 title claims abstract description 16
- 239000000835 fiber Substances 0.000 claims abstract description 42
- 239000013307 optical fiber Substances 0.000 claims abstract description 17
- 238000010438 heat treatment Methods 0.000 claims abstract description 7
- 238000013024 troubleshooting Methods 0.000 claims abstract description 7
- 230000001788 irregular Effects 0.000 claims description 3
- 238000000253 optical time-domain reflectometry Methods 0.000 claims 1
- 230000008439 repair process Effects 0.000 description 4
- 238000010276 construction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 241001465754 Metazoa Species 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000035929 gnawing Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
- G01M11/30—Testing of optical devices, constituted by fibre optics or optical waveguides
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
- H04B10/071—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using a reflected signal, e.g. using optical time domain reflectometers [OTDR]
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Abstract
The invention provides an optical cable fault rapid positioning method based on a thermal infrared detection technology, which is used for rapidly searching the breakpoint position of an optical fiber core of a fault optical cable and comprises the following steps; step S1, judging a fault fiber core with a break point in the fault optical cable, and preliminarily judging the area where the break point of the fiber core is located so as to carry out fault troubleshooting; step S2, inputting high-power laser into the fault fiber core at the optical signal access point closest to the fault fiber core breakpoint, and heating the fault fiber core breakpoint position of the optical cable fault area; s3, searching a high-temperature point in the fault area by using a thermal infrared detector to accurately position the breakpoint position of the fault fiber core; the invention can greatly improve the efficiency of checking the breakpoint of the optical fiber.
Description
Technical Field
The invention relates to the technical field of optical cable maintenance, in particular to an optical cable fault rapid positioning method based on a thermal infrared detection technology.
Background
The most common faults of the optical cable are optical cable interruption caused by construction outcrops, disaster weather, gnawing of small animals and the like, and the existing optical cable fault finding is that after the optical cable is tested by instruments and meters such as an OTDR (optical time domain reflectometer) and the like to obtain fault point distance measurement, large-scale finding is carried out on the spot by means of naked eyes.
From the analysis of the existing optical cable fault first-aid repair condition, the average time of fault point troubleshooting and positioning in the traditional manual visual search mode is half or more of the whole fault first-aid repair time, especially at special moments such as night and severe weather, or under the conditions that traffic such as winding of an optical cable line on a mountain and passing among trees is inconvenient and the environment is complex, the time is longer, and the whole first-aid repair process is long in time consumption, low in efficiency and high in labor cost.
Disclosure of Invention
The invention provides an optical cable fault rapid positioning method based on a thermal infrared detection technology, which can greatly improve the efficiency of optical fiber breakpoint investigation.
The invention adopts the following technical scheme.
A fast optical cable fault positioning method based on thermal infrared detection technology is used for fast searching the breakpoint position of an optical fiber core of a fault optical cable, and comprises the following steps;
step S1, judging a fault fiber core with a break point in the fault optical cable, and preliminarily judging the area where the break point of the fiber core is located so as to carry out fault troubleshooting;
step S2, inputting high-power laser into the fault fiber core at the optical signal access point closest to the fault fiber core breakpoint, and heating the fault fiber core breakpoint position of the optical cable fault area;
and step S3, searching a high-temperature point in the fault area by using a thermal infrared detector to accurately position the breakpoint position of the fault fiber core.
In step S1, the OTDR is used to preliminarily determine the approximate location of the fault point, so as to define the fault area of the optical cable to be examined.
In step S2, the optical signal access point closest to the broken core point is the optical fiber distribution frame closest to the broken core point of the optical fiber cable.
In step S2, the output end of the light source is connected to the faulty fiber core, and the output power of the light source is adjusted so that the irregular reflection of the laser input to the faulty fiber core at the break-point cross-section of the fiber core can raise the temperature of the break-point of the fiber core, thereby generating a difference in infrared characteristics between the laser input to the faulty fiber core and the surrounding environment, which can be recognized by the thermal infrared detector.
In step S3, near the fault point, a thermal infrared detector is used to scan along the optical cable line, and the position of the break point of the faulty fiber core is accurately located by using the high-temperature region automatic tracking and identification function of the thermal infrared detector, so as to determine the specific position of the break point of the optical cable.
The core break point is a break point exposed to air.
Aiming at the problem of low efficiency of fault point troubleshooting and positioning in optical cable fault field treatment, the invention provides a method for rapidly and conveniently positioning the fault point of the optical cable by injecting a light source with higher power into the optical cable to cause heating and temperature rise at the breakpoint and then scanning along the optical cable line by adopting a thermal infrared detection technology and analyzing the characteristics of thermal detection data on line in real time, thereby ensuring that the fault optical cable is repaired in the shortest time and most effective mode, recovering operation service, greatly improving optical cable emergency repair efficiency and avoiding waste of labor and capital cost to the greatest extent.
In the optical cable fault troubleshooting process, no matter the buried optical cable which is broken by outside construction or the aerial optical cable which is interrupted by other reasons, a relatively obvious breakpoint is exposed in the air, but because the field terrain environment is complex, a plurality of broken optical cables which are dug are not easy to distinguish in a labyrinth way, and a certain breakpoint is relatively hidden on a tree, great difficulty is brought to naked eye searching.
The method is suitable for the optical cables applied to a large range in the market at present, the wavelength of the required light source is not particularly limited to a certain value, and the required light source can generate enough heating effect at the breakpoint.
Compared with the prior art, the invention has the technical advantages that:
1. the heating and temperature rising characteristics of the light source at the breakpoint of the optical cable are combined with the thermal detection technology to replace manual visual search, so that the time consumption is low, the efficiency is high, and the average fault search time can be shortened by 36%;
2. the fault point is automatically identified by utilizing the tracking, positioning and marking functions of the thermal infrared detection technology on the high-temperature area, and compared with manual naked eye searching, the detection performance is better;
3. the method has good detection effect on the conditions that the detection is difficult to find by naked eyes, such as detour at night or on mountains, unobvious breakpoints, complex optical cable conditions and the like, and has wide application range;
4. the operation is simple, convenient and quick, and the requirement on the culture level of operators is not high.
Drawings
The invention is described in further detail below with reference to the following figures and detailed description:
FIG. 1 is a schematic diagram of the present invention.
Detailed Description
As shown in the figure, the optical cable fault rapid positioning method based on the thermal infrared detection technology is used for rapidly searching the breakpoint position of the optical fiber core of a fault optical cable, and comprises the following steps;
step S1, judging a fault fiber core with a break point in the fault optical cable, and preliminarily judging the area where the break point of the fiber core is located so as to carry out fault troubleshooting;
step S2, inputting high-power laser into the fault fiber core at the optical signal access point closest to the fault fiber core breakpoint, and heating the fault fiber core breakpoint position of the optical cable fault area;
and step S3, searching a high-temperature point in the fault area by using a thermal infrared detector to accurately position the breakpoint position of the fault fiber core.
In step S1, the OTDR is used to preliminarily determine the approximate location of the fault point, so as to define the fault area of the optical cable to be examined.
In step S2, the optical signal access point closest to the broken core point is the optical fiber distribution frame closest to the broken core point of the optical fiber cable.
In step S2, the output end of the light source is connected to the faulty fiber core, and the output power of the light source is adjusted so that the irregular reflection of the laser input to the faulty fiber core at the break-point cross-section of the fiber core can raise the temperature of the break-point of the fiber core, thereby generating a difference in infrared characteristics between the laser input to the faulty fiber core and the surrounding environment, which can be recognized by the thermal infrared detector.
In step S3, near the fault point, a thermal infrared detector is used to scan along the optical cable line, and the position of the break point of the faulty fiber core is accurately located by using the high-temperature region automatic tracking and identification function of the thermal infrared detector, so as to determine the specific position of the break point of the optical cable.
The core break point is a break point exposed to air.
Example (b):
after an optical cable breakage accident occurs, an approximate area range where an optical cable breakage point is located and which optical fibers are broken in the optical cable are determined by an OTDR (optical time domain reflectometer), then high-power laser (high-power laser) is injected into the broken optical fibers on an optical fiber distribution frame closest to the breakage point, the breaking points of the broken optical fibers are heated, and then a thermal infrared detector is used for scanning along the optical cable near the optical cable breakage position to confirm the accurate positions of the breaking points of the broken optical fibers.
Claims (6)
1. A method for quickly positioning optical cable faults based on a thermal infrared detection technology is used for quickly searching the breakpoint position of an optical fiber core of a fault optical cable, and is characterized in that: the positioning method comprises the following steps;
step S1, judging a fault fiber core with a break point in the fault optical cable, and preliminarily judging the area where the break point of the fiber core is located so as to carry out fault troubleshooting;
step S2, inputting high-power laser into the fault fiber core at the optical signal access point closest to the fault fiber core breakpoint, and heating the fault fiber core breakpoint position of the optical cable fault area;
and step S3, searching a high-temperature point in the fault area by using a thermal infrared detector to accurately position the breakpoint position of the fault fiber core.
2. The optical cable fault rapid positioning method based on the thermal infrared detection technology as claimed in claim 1, characterized in that: in step S1, the OTDR is used to preliminarily determine the approximate location of the fault point, so as to define the fault area of the optical cable to be examined.
3. The optical cable fault rapid positioning method based on the thermal infrared detection technology as claimed in claim 1, characterized in that: in step S2, the optical signal access point closest to the broken core point is the optical fiber distribution frame closest to the broken core point of the optical fiber cable.
4. The optical cable fault rapid positioning method based on the thermal infrared detection technology as claimed in claim 1, characterized in that: in step S2, the output end of the light source is connected to the faulty fiber core, and the output power of the light source is adjusted so that the irregular reflection of the laser input to the faulty fiber core at the break-point cross-section of the fiber core can raise the temperature of the break-point of the fiber core, thereby generating a difference in infrared characteristics between the laser input to the faulty fiber core and the surrounding environment, which can be recognized by the thermal infrared detector.
5. The optical cable fault rapid positioning method based on the thermal infrared detection technology as claimed in claim 1, characterized in that: in step S3, near the fault point, a thermal infrared detector is used to scan along the optical cable line, and the position of the break point of the faulty fiber core is accurately located by using the high-temperature region automatic tracking and identification function of the thermal infrared detector, so as to determine the specific position of the break point of the optical cable.
6. The optical cable fault rapid positioning method based on the thermal infrared detection technology as claimed in claim 1, characterized in that: the core break point is a break point exposed to air.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110527455.9A CN113281006A (en) | 2021-05-14 | 2021-05-14 | Optical cable fault rapid positioning method based on thermal infrared detection technology |
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| CN202110527455.9A CN113281006A (en) | 2021-05-14 | 2021-05-14 | Optical cable fault rapid positioning method based on thermal infrared detection technology |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103048117A (en) * | 2012-12-26 | 2013-04-17 | 桂林聚联科技有限公司 | Method for realizing accurate location of optical cable fault point through Raman scattering |
| CN106610315A (en) * | 2015-10-22 | 2017-05-03 | 中视迪威激光显示技术有限公司 | Optical fiber monitoring and checking system |
| CN107219063A (en) * | 2017-06-30 | 2017-09-29 | 华中科技大学鄂州工业技术研究院 | A kind of high-capacity optical fiber laser safety monitoring method and device |
| CN108007673A (en) * | 2018-01-17 | 2018-05-08 | 北京高普乐光电科技股份公司 | A kind of System and method for using thermal imaging detection high power laser multimode fibre |
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2021
- 2021-05-14 CN CN202110527455.9A patent/CN113281006A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103048117A (en) * | 2012-12-26 | 2013-04-17 | 桂林聚联科技有限公司 | Method for realizing accurate location of optical cable fault point through Raman scattering |
| CN106610315A (en) * | 2015-10-22 | 2017-05-03 | 中视迪威激光显示技术有限公司 | Optical fiber monitoring and checking system |
| CN107219063A (en) * | 2017-06-30 | 2017-09-29 | 华中科技大学鄂州工业技术研究院 | A kind of high-capacity optical fiber laser safety monitoring method and device |
| CN108007673A (en) * | 2018-01-17 | 2018-05-08 | 北京高普乐光电科技股份公司 | A kind of System and method for using thermal imaging detection high power laser multimode fibre |
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Application publication date: 20210820 |