CN111679313A - Method for confirming power optical cable routing by mechanical periodic vibration excitation - Google Patents
Method for confirming power optical cable routing by mechanical periodic vibration excitation Download PDFInfo
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- CN111679313A CN111679313A CN202010526604.5A CN202010526604A CN111679313A CN 111679313 A CN111679313 A CN 111679313A CN 202010526604 A CN202010526604 A CN 202010526604A CN 111679313 A CN111679313 A CN 111679313A
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- 230000003287 optical effect Effects 0.000 title claims abstract description 131
- 238000000034 method Methods 0.000 title claims abstract description 14
- 230000005284 excitation Effects 0.000 title claims abstract description 9
- 230000000737 periodic effect Effects 0.000 title claims abstract description 9
- 239000013307 optical fiber Substances 0.000 claims abstract description 65
- 238000010586 diagram Methods 0.000 claims abstract description 17
- 230000001427 coherent effect Effects 0.000 claims description 15
- 230000035945 sensitivity Effects 0.000 claims description 10
- 230000002452 interceptive effect Effects 0.000 claims description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 238000001514 detection method Methods 0.000 description 5
- 239000000835 fiber Substances 0.000 description 4
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- 238000004891 communication Methods 0.000 description 2
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- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
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- G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
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Abstract
The invention discloses a method for confirming power optical cable routing by mechanical periodic vibration excitation, which comprises the following steps: the optical fiber vibration sensor host, the optical cable network and the passive sensing terminal box form an optical fiber vibration early warning system; carrying out hand touch or hammer strike on the peripheries of optical cables at the starting point and the ending point of an optical cable network of the optical fiber vibration sensor host, and debugging system parameters of the optical fiber vibration sensor host; hammering the pipe well cover by using a specific vibration source according to a known optical cable network architecture diagram, and obtaining a physical route of the optical cable network according to a vibration oscillogram collected and processed by a host of the optical fiber vibration sensor; and collecting GPS position information corresponding to the pipe well cover of the optical cable network physical route and POI reference object information corresponding to the GPS position information, and drawing an optical cable network physical route map. The invention makes large-area checking possible and can improve the optical cable searching efficiency, and the accuracy rate of optical cable searching can reach 100%.
Description
Technical Field
The invention relates to the field of optical fiber network resource management, in particular to a method for confirming power optical cable routing by mechanical periodic vibration excitation.
Background
The electric power construction is rapidly developed, the scale of the electric power communication optical cable is also developed in 30% of increment every year, and accordingly, the electric power communication faults are caused by confusion of physical routes of the optical cable, the optical cable for emergency repair at present cannot be found due to unclear routes, time and labor are wasted in emergency repair maintenance, and maintenance benefits and production accidents are influenced to continuously occur.
Under the construction requirement of the power ubiquitous Internet of things, the importance degree of operation and maintenance and resource management of the power optical fiber network is further improved, and the resource management of the optical fiber network is the basis of intelligent management of the optical fiber network and the basis of the construction of the power ubiquitous Internet of things. Only if the effective management of all physical resources in the optical fiber network is realized, the intelligent management can be realized in other aspects of the intelligent management of the optical fiber network. The main contents of the fiber resource management include: and the method comprises the following contents of optical fiber link checking, optical fiber service checking, idle optical path checking, optical fiber link scheduling and the like.
Therefore, the management of the optical fiber network physical link belongs to the category of optical fiber network resource management, and is the basis of the optical fiber network intelligent management constructed by the power ubiquitous internet of things, and the intelligent management can be realized in other aspects of the optical fiber network intelligent management only by realizing the effective management of the optical fiber network physical route. Therefore, the optical cable network physical route checking work is particularly important, and a new simple and effective method for solving and renewing the physical route resources of the power optical cable network is urgently needed.
The traditional means of optical cable network management is through traditional manual verification or through photoelectric detection devices, such as: optical power meters, spectral analysis equipment, optical time domain reflectometers, OTDRs, and the like. With these detection devices, a complete set of off-grid detection schemes is implemented. For more and more optical cable networks which are complicated and uninterruptedly, the resource check and scheduling of the optical cable networks of the uninterruptedly and uninterruptedly networks cannot be realized.
In traditional manual checking, a target optical cable is found out from dozens of unknown optical cables by manually pulling the interior of a pipe well, and accurate checking of optical cable routes in a whole city is impossible. Moreover, the conventional optical fiber resource management mode is label type, the label is added at one time when the engineering is implemented, the biggest problem of the conventional optical fiber resource management is that the label is easy to be stained or fall off, and in addition, a large amount of expansion and cutting engineering are carried out, the consistency of the label and the optical link is difficult to confirm.
When the traditional optical cable census instrument is used for checking, personnel at the instrument end need to judge different vibration frequency spectrums generated by different knocked optical cables, and the vibration generated by knocking the optical cables can influence other nearby optical cables, so that the target optical cable to be searched is difficult to judge, as shown in fig. 5. The optical cable inspection is carried out according to the principle that the vibration frequency spectrum generated by the optical fiber vibration is adopted by the equipment. When the optical cable locating device is used, after jumper wires are connected well by staff at the instrument end, the staff at the far end need to knock each optical cable one by one, a built-in system of the instrument can convert knocking information into audio and video signals, namely vibration frequency spectrums, the staff at the instrument end need to judge different knocked optical cables and different generated vibration frequency spectrums, and vibration generated by knocking the optical cables can influence other optical cables beside the optical cables, so that the target optical cable to be searched is difficult to judge.
The principle that the optical cable general survey appearance in the market was used is mostly the optical time domain reflection principle, because of there are numerous optical cables in the tube well, initiatively strikes the optical cable and can produce a lot of noise interference signal, can't accurately discern the target optical cable in the tube well.
Disclosure of Invention
Aiming at the problems, the invention provides a method for confirming the routing of the power optical cable, which can accurately identify the target optical cable in the tube well without opening the tube well cover.
In order to achieve the above object, the present invention provides a method for confirming routing of a power cable by mechanical periodic vibration excitation, comprising:
s1: deploying an optical fiber vibration early warning system: installing an optical fiber vibration sensor host in a machine room at the starting point of the optical cable network, installing a passive sensing terminal box at the end point of the optical cable network, wherein the optical fiber vibration sensor host, the optical cable network and the passive sensing terminal box form an optical fiber vibration early warning system;
s2: sensitivity debugging: carrying out hand touch or hammer strike on the peripheries of optical cables at the starting point and the ending point of an optical cable network of the optical fiber vibration sensor host, and debugging system parameters of the optical fiber vibration sensor host;
s3: determining the path of the optical cable trench: hammering the pipe well cover by using a specific vibration source according to a known optical cable network architecture diagram; confirming the pipe well cover through which the checked target optical cable trench passes and the position of the pipe well cover according to a vibration oscillogram acquired and processed by the optical fiber vibration sensor host, so as to draw the physical route of the optical cable network and find out the trend of the checked target optical cable trench;
s4: drawing and outputting an optical cable network physical routing diagram: and collecting GPS position information corresponding to the pipe well cover of the optical cable network physical route and POI reference object information corresponding to the GPS position information, and drawing an optical cable network physical route map.
In an optimal mode, in the optical fiber vibration early warning system, the optical fiber vibration sensor host includes: a light source module for emitting a coherent light signal; the power supply module is used for supplying power to the optical fiber vibration sensor host; and the PD module is used for receiving and analyzing the coherent optical signals returned in the optical cable network and obtaining a vibration oscillogram.
In a preferable mode, in the optical fiber vibration early warning system, the passive sensing terminal box is configured to receive a coherent optical signal that is sent from the optical fiber vibration sensor and passes through an optical cable network, interfere and reflect the coherent optical signal, and the coherent optical signal is transmitted back to the PD module of the optical fiber vibration sensor host through the optical cable network again.
Under the preferred mode, strike the pipe well lid through the dynamics of difference in the sensitivity debugging, constantly adjust the system parameter of optic fibre vibration sensing appearance, set out reasonable vibration threshold value and sensitivity.
The invention has the beneficial effects that: the invention uses the existing power optical cable as a detection unit, the pipe well cover does not need to be opened, and the pipe well cover can be detected by knocking with an iron hammer or other specific vibration sources; the invention makes large-area checking possible and can improve the optical cable searching efficiency, and the accuracy rate of optical cable searching can reach 100%.
Drawings
FIG. 1 is a schematic diagram of the system of the present invention;
FIG. 2 is a time domain signal diagram of a vibration waveform;
FIG. 3 is a frequency domain signal diagram of a vibration waveform;
FIG. 4 is a sample physical routing diagram for a fiber optic cable network;
fig. 5 is a schematic diagram of a conventional optical cable prover.
Detailed Description
As shown in fig. 1, the method for confirming routing of an optical power cable by mechanical periodic vibration excitation according to the present invention detects a physical vibration signal of an environment along the optical cable, and checks a routing line according to the physical vibration signal; the method comprises the following steps:
s1: deploying an optical fiber vibration early warning system: installing an optical fiber vibration sensor host in a machine room at the starting point of an optical cable network, wherein the optical fiber vibration sensor host is connected with two optical fibers in the optical cable network to be checked and is applied to the optical cable network, installing a passive sensing terminal box at the end point of the optical cable network, and forming an optical fiber vibration early warning system by the optical fiber vibration sensor host, the optical cable network and the passive sensing terminal box;
s2: sensitivity debugging: carrying out hand touch or hammer strike on the peripheries of optical cables at the starting point and the ending point of an optical cable network of the optical fiber vibration sensor host, and debugging system parameters of the optical fiber vibration sensor host;
s3: determining the path of the optical cable trench: the checked target optical cable trench passes through a plurality of pipe well covers, and the pipe well cover through which the target optical cable trench passes is hammered by using a specific vibration source, such as a large 8KG iron hammer, according to a known optical cable network architecture diagram without opening the pipe well cover; confirming the pipe well cover and the position of the checked target optical cable channel according to a vibration oscillogram collected and processed by the optical fiber vibration sensor host, so as to draw the physical route of the optical cable network and find out the trend of the checked target optical cable channel;
s4: drawing and outputting an optical cable network physical routing diagram: and collecting GPS position information corresponding to a key pipe well cover of the optical cable network physical route and POI reference object information corresponding to the GPS position information, and drawing an optical cable network physical route map.
In the optical fiber vibration early warning system, the optical fiber vibration sensor host includes: a light source module for emitting a coherent light signal; the power supply module is used for supplying power to the optical fiber vibration sensor host; and the PD module is used for receiving and analyzing the coherent optical signals returned in the optical cable network and obtaining a vibration oscillogram.
In the optical fiber vibration early warning system, the passive sensing terminal box is used for receiving coherent light signals which are sent from the optical fiber vibration sensor and pass through an optical cable network, interfering and reflecting the coherent light signals, and the coherent light signals are transmitted back to the PD module of the optical fiber vibration sensor host through the optical cable network again.
Pipe well lid is strikeed through the dynamics of difference in the sensitivity debugging, constantly adjusts the system parameter of optic fibre vibration sensing appearance, sets out reasonable vibration threshold value and sensitivity. The vibration degree of the optical cable is different when the optical cable is touched manually and the well lid is knocked, and the optical cable is touched and alarmed in two different levels. In principle, the alarm can be realized when the vibration strength exceeds a threshold value during knocking, so that the well lid needs to be knocked by using a large 8KG iron hammer or a specific vibration source according to the regulation. And when the optical cable is artificially touched, the vibration intensity of production can be far greater than the hammer and strike the well lid, what simulate this moment is that the situation of optical cable is dragged to the harmful people in reality, should produce the higher alarm of danger level this moment. These two steps are to adjust the device sensitivity to the appropriate position.
The vibration signal diagram is observed through hammer knocking, if the optical cable passes through a vibration point, the optical fiber vibration sensor can monitor the vibration signal, the system has an event recognition function and can eliminate background noise, the acquired vibration waveform diagrams are shown in figures 2 and 3, figure 2 is a time domain signal diagram which reflects the change condition of the signal along with time, the abscissa is time, and the ordinate is the change of the signal; fig. 3 is a frequency domain signal diagram reflecting the variation of a signal with time, the horizontal axis being the frequency and the vertical axis being the amplitude of the frequency signal.
When the signal in the vibration waveform diagrams shown in fig. 2 and 3 is changed violently, the vibration signal appears and an alarm is given, which proves that the optical cable route passes through the manhole cover, otherwise, the optical cable route does not pass through the manhole cover. According to the positions of the starting point of the machine room and the terminal box, all well covers along the path are knocked, the physical route of the optical cable network is judged through the alarm signal, and then drawing is performed manually in combination, as shown in fig. 3.
The invention utilizes the existing power optical cable as a detection unit, does not need to open the well lid, and can detect by knocking with an iron hammer on the well lid. The invention has the advantages that: the accuracy rate is 100%, a corresponding event oscillogram is collected, the target optical cable is accurately positioned, and the influence of vibration of other optical cables is avoided; the efficiency is high, and the inspection and labeling of two transmitting and reflecting optical cables in one tube well are finished in 15 minutes; the large-area checking is possible, the optical cable searching efficiency is improved, and the whole-city route checking is possible.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical solutions and the inventive concepts of the present invention within the technical scope of the present invention.
Claims (4)
1. A method for confirming power cable routing by mechanical periodic vibration excitation, comprising:
s1: deploying an optical fiber vibration early warning system: installing an optical fiber vibration sensor host in a machine room at the starting point of the optical cable network, installing a passive sensing terminal box at the end point of the optical cable network, wherein the optical fiber vibration sensor host, the optical cable network and the passive sensing terminal box form an optical fiber vibration early warning system;
s2: sensitivity debugging: carrying out hand touch or hammer strike on the peripheries of optical cables at the starting point and the ending point of an optical cable network of the optical fiber vibration sensor host, and debugging system parameters of the optical fiber vibration sensor host;
s3: determining the path of the optical cable trench: hammering the pipe well cover by using a specific vibration source according to a known optical cable network architecture diagram; confirming the pipe well cover through which the checked target optical cable trench passes and the position of the pipe well cover according to a vibration oscillogram acquired and processed by the optical fiber vibration sensor host, so as to draw the physical route of the optical cable network and find out the trend of the checked target optical cable trench;
s4: drawing and outputting an optical cable network physical routing diagram: and collecting GPS position information corresponding to the pipe well cover of the optical cable network physical route and POI reference object information corresponding to the GPS position information, and drawing an optical cable network physical route map.
2. The method for confirming routing of an optical power cable according to claim 1, wherein in the optical fiber vibration warning system, the optical fiber vibration sensor host comprises: a light source module for emitting a coherent light signal; the power supply module is used for supplying power to the optical fiber vibration sensor host; and the PD module is used for receiving and analyzing the coherent optical signals returned in the optical cable network and obtaining a vibration oscillogram.
3. The method for confirming routing of power optical cable by mechanical periodic vibration excitation according to claims 1 and 2, wherein in the optical fiber vibration early warning system, the passive sensing terminal box is used for receiving coherent optical signals which are sent from the optical fiber vibration sensor and pass through an optical cable network, interfering and reflecting the coherent optical signals, and the coherent optical signals are transmitted back to the PD module of the optical fiber vibration sensor host through the optical cable network again.
4. The method for confirming power cable routing through mechanical periodic vibration excitation according to claim 1, wherein in the sensitivity debugging, the well cover of the pipe is knocked with different force, system parameters of the optical fiber vibration sensor are continuously adjusted, and a reasonable vibration threshold value and sensitivity are set.
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| CN202010526604.5A CN111679313A (en) | 2020-06-10 | 2020-06-10 | Method for confirming power optical cable routing by mechanical periodic vibration excitation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20220120925A1 (en) * | 2020-10-19 | 2022-04-21 | Nec Laboratories America, Inc | Utility pole localization by distributed fiber sensing of aerial fiber cable |
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Patent Citations (5)
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| CN106895266A (en) * | 2015-12-19 | 2017-06-27 | 西安成远网络科技有限公司 | A kind of oil gas monitoring system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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Application publication date: 20200918 |