CN103560824A - Optical cable fault nondestructive testing device and method based on optical fiber interference principle - Google Patents
Optical cable fault nondestructive testing device and method based on optical fiber interference principle Download PDFInfo
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- CN103560824A CN103560824A CN201310527052.XA CN201310527052A CN103560824A CN 103560824 A CN103560824 A CN 103560824A CN 201310527052 A CN201310527052 A CN 201310527052A CN 103560824 A CN103560824 A CN 103560824A
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Abstract
The invention discloses an optical cable fault nondestructive testing device and method based on the optical fiber interference principle and belongs to the optical fiber sensing field. The optical cable fault nondestructive testing device and method based on the optical fiber interference principle aim to solve the problem that fast and nondestructive fault optical fiber testing can not be conducted by an existing device and method. The optical cable fault nondestructive testing device based on the optical fiber interference principle comprises a controller, a laser generator, an optical fiber interferometer, a reflector, a photoelectric converter, an A/D converter, a displayer, at least two detectors and at least two couplers. According to the optical cable fault nondestructive testing device and method based on the optical fiber interference principle, the optical fiber Sagnac interference technique and optical time-domain reflectometry principle are adopted, ARM9 and FPGA liquid crystal displaying and weak signal processing methods are used, a fault optical cable can be positioned fast, distance positioning of the fault optical cable can be achieved accurately, and time for communication optical cable emergency maintenance is shortened. The optical cable fault nondestructive testing device and method based on the optical fiber interference principle are suitable for work such as optical cable engineering construction, fault detection and positioning, and optical cable marking.
Description
Technical field
The present invention relates to a kind of Cable's Fault the cannot-harm-detection device and method based on fiber optic interferometric principle.
Background technology
Fibre-optic telecommunication cable is the very important device of communication field, once it breaks down, can affect the stable of communication, even can cause communicating interrupt.So be starved of, when breaking down, fibre-optic telecommunication cable can carry out in time fault optical cable location and fault point apart from location, to keep in repair in time or change, and assurance communication unimpeded.
The method of using at present has three kinds: 1, from known place, start to pull one by one.This mode relatively wastes time and energy, and it is large to search difficulty, very easily damages optical cable simultaneously in the process pulling.2, use OTDR(optical time domain reflectometer) and crooked optical cable of while.OTDR utilizes the loss that reflection of light technology can measuring optical fiber, but in each root optical cable, may have the optical fiber of 24 cores, and do not know optical fiber and optical cable corresponding relation in the situation that, the method workload is heavy.And optical cable to be that the utmost point is not easy to be subject to crooked, if applied powerful crooked optical cable, will produce damage to optical cable.3, at the starting end of optical fiber, inject red light source, then at optical fiber tail end, look into and see if there is ruddiness.Red light source loss is too large and transmission range is not far, once and run into router and so in the middle of connect, red light source cannot be differentiated.
Summary of the invention
An object of the present invention is to propose a kind of in time, Cable's Fault the cannot-harm-detection device based on fiber optic interferometric principle of Non-Destructive Testing optical fiber.
Another object of the present invention is to propose a kind of detection Cable's Fault the cannot-harm-detection device based on fiber optic interferometric principle accurately.
Also object of the present invention be propose a kind ofly to carry out in time optical fiber, the Cable's Fault lossless detection method based on fiber optic interferometric principle of Non-Destructive Testing.
For reaching this object, on the one hand, the present invention by the following technical solutions:
A Cable's Fault the cannot-harm-detection device for fiber optic interferometric principle, described device comprises controller, generating laser, fibre optic interferometer, speculum, optical-electrical converter, modulus signal transducer, display, at least two detectors and at least two couplers; Described detector, described coupler and described speculum are all arranged on laser conduction route, and described generating laser, fibre optic interferometer, optical-electrical converter, modulus signal transducer and display are connected on described controller.
Particularly, described controller comprises ARM9 processor and Programmable Logic Controller; Described ARM9 processor is connected with described display, and described Programmable Logic Controller is connected with modulus signal transducer with described generating laser respectively.
Particularly, the man-machine interface of described device is formed by LINUX operating system design.
Particularly, described device comprises the first detector, the second detector, the first coupler and the second coupler; Described the first detector and the first coupler are positioned at the primary importance on laser conduction route, and described the second detector and the second coupler are positioned at the second place on laser conduction route.
On the other hand, the present invention is by the following technical solutions:
The Cable's Fault lossless detection method based on fiber optic interferometric principle that said apparatus is implemented, described method comprises the steps:
Step 1. utilizes generating laser to produce laser;
Step 2. is inputted optical fiber to be tested by fibre optic interferometer by gained laser;
Step 3. is applying vibration on optical cable under described optical fiber to be tested;
Step 4. receives the light signal reflecting;
Step 5. utilizes optical-electrical converter to convert reclaimed light signal to the signal of telecommunication;
Step 6. is used modulus signal transducer to carry out analog-to-digital conversion to the gained signal of telecommunication;
Step 7. shows acquired results by display, confirms optical fiber to be tested and judges described optical fiber to be tested normally or fault.
Particularly, in step 7, by the first detector, confirm whether optical fiber to be tested is fault optical fiber or no for needing the optical fiber of mark.
Particularly, in step 7, when breaking down, the described optical fiber to be tested of judgement determines by the second detector the distance that produces fault place.
Further, determine that the method that fault distance is used is optical time domain reflection technology.
The Cable's Fault the cannot-harm-detection device and the method that the present invention is based on fiber optic interferometric principle adopt optical fiber Sagnac interference technique and optical time domain reflection measuring principle, carry out rapidly the location of fault point, have effectively shortened the repairing time of fault optical cable.Overcome traditional fiber failure location and apart from Location Difficulties, from vision with acoustically carry out optical cable location.Aspect engineering construction, effectively saved construction period, improved efficiency of construction, facilitated the work such as optical fiber mark.
Accompanying drawing explanation
Fig. 1 is preferred embodiment two structural representations that the present invention is based on Cable's Fault the cannot-harm-detection device of fiber optic interferometric principle;
Fig. 2 is preferred embodiment two shown device internal optics part-structure schematic diagrames;
Fig. 3 is the flow chart of preferred embodiment two Cable's Fault lossless detection methods;
Fig. 4 applies the resulting demonstration result of vibration on optical cable under normal optical fiber.
Embodiment
Below in conjunction with accompanying drawing and by embodiment, further illustrate technical scheme of the present invention.
Preferred embodiment one:
This preferred embodiment provides a kind of Cable's Fault the cannot-harm-detection device and method based on fiber optic interferometric principle, the method enters inject to be tested optical fiber through fibre optic interferometer by light for sending laser by laser, the light that fiber reflection to be tested returns carries external information and enters signal processing module after by opto-electronic conversion, and signal shows by liquid crystal display after finishing dealing with.
At opticator, utilize the first detector to carry out optical cable location, utilize the second detector to carry out Cable's Fault apart from location.Because the light path that light is walked after fiber delay time ring is different, when arriving the second coupler, the two-beam reflecting from optical fiber tail end can interfere phenomenon.This phenomenon can be shown on liquid crystal display screen after by analog-to-digital conversion, makes user can judge more intuitively that whether normally and whether be the optical cable that needs mark optical cable.Shown in Fig. 4, be and on optical cable under normal optical fiber, apply the resulting interference demonstration of vibration result.
Hardware configuration is mainly based on ARM9 processor and FPGA(Programmable Logic Controller).And under LINUX operating system, carry out Human Machine Interface.ARM system is mainly responsible for liquid crystal display, communication, user's interactive function.FPGA is mainly responsible for pulse generation, AD sampling etc.
Workflow: be responsible for carrying out watching and listening to of video, audio frequency by a people in Central Control Room, another people is responsible for the outdoor optical cable that knocks.Between two people, pass through mobile communication.If there is waveform as shown in Figure 4 in the process of knocking, judge that this optical cable is normal, or this optical cable be the optical cable that needs mark; Otherwise be fault optical cable.When judging this Cable's Fault, the data that this device can receive by the second detector are carried out the data processing based on optical time domain reflection technology, and then obtain the distance and position of fault optical cable.
Cable's Fault the cannot-harm-detection device and the method for this preferred embodiment based on fiber optic interferometric principle adopts optical fiber Sagnac interference technique and optical time domain reflection measuring principle, combine the liquid crystal display of ARM9 and FPGA and the method that small-signal is processed simultaneously, can locate rapidly fault optical cable, accurately carry out the distance location of fault optical cable, greatly shortened the communications optical cable repairing time.
Preferred embodiment two:
As depicted in figs. 1 and 2, this preferred embodiment provides a kind of Cable's Fault the cannot-harm-detection device and method based on fiber optic interferometric principle.This device comprises ARM9 processor, Programmable Logic Controller, generating laser, fibre optic interferometer, optical-electrical converter, modulus signal transducer, display, the first detector, the second detector, the first coupler and the second coupler.The first detector and the first coupler are positioned at the primary importance on laser conduction route, and the second detector and the second coupler are positioned at the second place on laser conduction route.In Fig. 1, solid line is annexation, with the dotted line of arrow, represents signal circulation relation.
ARM9 processor is connected with display, and Programmable Logic Controller is connected with modulus signal transducer with generating laser respectively, and the man-machine interface of this device is formed by LINUX operating system design.
As shown in Figure 3, method of testing comprises the steps: that step 1. utilizes generating laser to produce laser; Step 2. is inputted optical fiber to be tested by fibre optic interferometer by gained laser; Step 3. is applying vibration on optical cable under optical fiber to be tested; Step 4. receives the light signal reflecting; Step 5. utilizes optical-electrical converter to convert reclaimed light signal to the signal of telecommunication; Step 6. is used modulus signal transducer to carry out analog-to-digital conversion to the gained signal of telecommunication; Step 7. shows acquired results by display, by the first detector, confirms optical fiber to be tested and judges described optical fiber to be tested normally or fault.When judgement fiber failure to be tested, utilize optical time domain reflection technology to determine fault distance by the second detector.
With the main distinction of preferred embodiment one be: the concrete mode that applies vibration on optical cable under optical fiber to be tested is not limit, can be knocking of staff, also can be that mechanical arm automatically impacts, can realize the mode that applies vibrating effect and do not damage optical cable and optical fibres on optical cable and all can.
Claims (8)
1. Cable's Fault the cannot-harm-detection device based on fiber optic interferometric principle, it is characterized in that, described device comprises controller, generating laser, fibre optic interferometer, speculum, optical-electrical converter, modulus signal transducer, display, at least two detectors and at least two couplers; Described detector, described coupler and described speculum are all arranged on laser conduction route, and described generating laser, fibre optic interferometer, optical-electrical converter, modulus signal transducer and display are connected on described controller.
2. Cable's Fault the cannot-harm-detection device based on fiber optic interferometric principle according to claim 1, is characterized in that, described controller comprises ARM9 processor and Programmable Logic Controller; Described ARM9 processor is connected with described display, and described Programmable Logic Controller is connected with modulus signal transducer with described generating laser respectively.
3. Cable's Fault the cannot-harm-detection device based on fiber optic interferometric principle according to claim 1, is characterized in that, the man-machine interface of described device is formed by LINUX operating system design.
4. Cable's Fault the cannot-harm-detection device based on fiber optic interferometric principle according to claim 1, is characterized in that, described device comprises the first detector, the second detector, the first coupler and the second coupler; Described the first detector and the first coupler are positioned at the primary importance on laser conduction route, and described the second detector and the second coupler are positioned at the second place on laser conduction route.
5. apply the Cable's Fault lossless detection method based on fiber optic interferometric principle that the arbitrary described device of claim 1 to 4 is implemented, it is characterized in that, described method comprises the steps:
Step 1. utilizes generating laser to produce laser;
Step 2. is inputted optical fiber to be tested by fibre optic interferometer by gained laser;
Step 3. is applying vibration on optical cable under described optical fiber to be tested;
Step 4. receives the light signal reflecting;
Step 5. utilizes optical-electrical converter to convert reclaimed light signal to the signal of telecommunication;
Step 6. is used modulus signal transducer to carry out analog-to-digital conversion to the gained signal of telecommunication;
Step 7. shows acquired results by display, confirms optical fiber to be tested and judges described optical fiber to be tested normally or fault.
6. the Cable's Fault lossless detection method based on fiber optic interferometric principle according to claim 5, is characterized in that, in step 7, by the first detector, confirms whether optical fiber to be tested is fault optical fiber or no for needing the optical fiber of mark.
7. the Cable's Fault lossless detection method based on fiber optic interferometric principle according to claim 5, is characterized in that, in step 7, when the described optical fiber to be tested of judgement breaks down, by the second detector, determines the distance that produces fault place.
8. the Cable's Fault lossless detection method based on fiber optic interferometric principle according to claim 7, is characterized in that, determines that the method that fault distance is used is optical time domain reflection technology.
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104601227A (en) * | 2015-01-09 | 2015-05-06 | 北京奥普维尔科技有限公司 | Test instrument and test method thereof |
| CN104601222A (en) * | 2015-01-07 | 2015-05-06 | 中国石油天然气股份有限公司 | Petroleum pipeline optical cable inquiry unit |
| CN106644398A (en) * | 2016-12-30 | 2017-05-10 | 中国科学院深圳先进技术研究院 | Submarine optical cable fault point positioning method |
| CN107743049A (en) * | 2017-11-29 | 2018-02-27 | 广东复安科技发展有限公司 | Track instrument is sought in a kind of new Cable's Fault positioning generaI investigation |
| CN109004973A (en) * | 2018-07-04 | 2018-12-14 | 广州广电计量检测股份有限公司 | A kind of OTDR capability evaluating device and method |
| CN109471156A (en) * | 2018-11-08 | 2019-03-15 | 桂林聚联科技有限公司 | A kind of device and method for detecting optical cable routing trend |
| CN110530498A (en) * | 2019-08-09 | 2019-12-03 | 国家电网有限公司 | Long range optical cable dynamic monitoring system |
| CN111884709A (en) * | 2020-07-20 | 2020-11-03 | 中铁第四勘察设计院集团有限公司 | Railway communication optical cable on-line monitoring system and method |
| WO2021004315A1 (en) * | 2019-07-09 | 2021-01-14 | Huawei Technologies Co., Ltd. | Method and apparatus for detecting operational conditions of an optical link in an optical network |
| CN112903084A (en) * | 2021-01-22 | 2021-06-04 | 中化学交通建设集团有限公司 | Optical fiber vibration sensing optical path fault diagnosis method and related equipment |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1598494A (en) * | 2004-07-20 | 2005-03-23 | 重庆大学 | Method and system of optical fibre interference type auto-monitoring for long distance pipeline safety monitoring |
| US20070196058A1 (en) * | 2005-08-23 | 2007-08-23 | Yong-Gi Lee | Apparatus and method for identification of optical cable |
| CN101051869A (en) * | 2007-05-17 | 2007-10-10 | 上海光朗信通讯技术有限公司 | Safety monitor system of optical cable communication line |
| CN102064884A (en) * | 2010-11-25 | 2011-05-18 | 复旦大学 | Long-distance distributed optical fiber positioning interference structure based on wavelength division multiplexing (WDM) |
| CN103051377A (en) * | 2012-12-26 | 2013-04-17 | 桂林聚联科技有限公司 | Method for precisely positioning fault of optical cable by utilizing rayleigh scattering and coherent optical time domain reflection technology |
| CN103281118A (en) * | 2013-05-31 | 2013-09-04 | 合肥融讯电子科技有限公司 | Optical cable recognition physical position finder based on optical fiber interference mutual correlation algorithm and recognition positioning method thereof |
-
2013
- 2013-10-30 CN CN201310527052.XA patent/CN103560824A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1598494A (en) * | 2004-07-20 | 2005-03-23 | 重庆大学 | Method and system of optical fibre interference type auto-monitoring for long distance pipeline safety monitoring |
| US20070196058A1 (en) * | 2005-08-23 | 2007-08-23 | Yong-Gi Lee | Apparatus and method for identification of optical cable |
| CN101051869A (en) * | 2007-05-17 | 2007-10-10 | 上海光朗信通讯技术有限公司 | Safety monitor system of optical cable communication line |
| CN102064884A (en) * | 2010-11-25 | 2011-05-18 | 复旦大学 | Long-distance distributed optical fiber positioning interference structure based on wavelength division multiplexing (WDM) |
| CN103051377A (en) * | 2012-12-26 | 2013-04-17 | 桂林聚联科技有限公司 | Method for precisely positioning fault of optical cable by utilizing rayleigh scattering and coherent optical time domain reflection technology |
| CN103281118A (en) * | 2013-05-31 | 2013-09-04 | 合肥融讯电子科技有限公司 | Optical cable recognition physical position finder based on optical fiber interference mutual correlation algorithm and recognition positioning method thereof |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104601222A (en) * | 2015-01-07 | 2015-05-06 | 中国石油天然气股份有限公司 | Petroleum pipeline optical cable inquiry unit |
| CN104601227A (en) * | 2015-01-09 | 2015-05-06 | 北京奥普维尔科技有限公司 | Test instrument and test method thereof |
| CN104601227B (en) * | 2015-01-09 | 2018-02-23 | 北京奥普维尔科技有限公司 | A kind of test instrumentation, and its method of testing |
| CN106644398A (en) * | 2016-12-30 | 2017-05-10 | 中国科学院深圳先进技术研究院 | Submarine optical cable fault point positioning method |
| CN107743049A (en) * | 2017-11-29 | 2018-02-27 | 广东复安科技发展有限公司 | Track instrument is sought in a kind of new Cable's Fault positioning generaI investigation |
| CN109004973A (en) * | 2018-07-04 | 2018-12-14 | 广州广电计量检测股份有限公司 | A kind of OTDR capability evaluating device and method |
| CN109471156A (en) * | 2018-11-08 | 2019-03-15 | 桂林聚联科技有限公司 | A kind of device and method for detecting optical cable routing trend |
| WO2021004315A1 (en) * | 2019-07-09 | 2021-01-14 | Huawei Technologies Co., Ltd. | Method and apparatus for detecting operational conditions of an optical link in an optical network |
| US10979140B2 (en) | 2019-07-09 | 2021-04-13 | Huawei Technologies Co., Ltd. | Method and apparatus for detecting operational conditions of an optical link in an optical network |
| CN110530498A (en) * | 2019-08-09 | 2019-12-03 | 国家电网有限公司 | Long range optical cable dynamic monitoring system |
| CN110530498B (en) * | 2019-08-09 | 2021-08-17 | 国家电网有限公司 | Long-distance optical cable dynamic monitoring system |
| CN111884709A (en) * | 2020-07-20 | 2020-11-03 | 中铁第四勘察设计院集团有限公司 | Railway communication optical cable on-line monitoring system and method |
| CN111884709B (en) * | 2020-07-20 | 2021-09-14 | 中铁第四勘察设计院集团有限公司 | Railway communication optical cable on-line monitoring system and method |
| CN112903084A (en) * | 2021-01-22 | 2021-06-04 | 中化学交通建设集团有限公司 | Optical fiber vibration sensing optical path fault diagnosis method and related equipment |
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Application publication date: 20140205 |