CN109818671B - Control method and system for intelligent optical metrology - Google Patents
Control method and system for intelligent optical metrology Download PDFInfo
- Publication number
- CN109818671B CN109818671B CN201711170081.XA CN201711170081A CN109818671B CN 109818671 B CN109818671 B CN 109818671B CN 201711170081 A CN201711170081 A CN 201711170081A CN 109818671 B CN109818671 B CN 109818671B
- Authority
- CN
- China
- Prior art keywords
- optical
- fault
- optical fiber
- otdr
- time domain
- 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.)
- Active
Links
- 230000003287 optical effect Effects 0.000 title claims abstract description 320
- 238000000034 method Methods 0.000 title claims abstract description 18
- 239000013307 optical fiber Substances 0.000 claims abstract description 126
- 238000009826 distribution Methods 0.000 claims abstract description 108
- 238000004891 communication Methods 0.000 claims abstract description 48
- 238000010586 diagram Methods 0.000 claims description 19
- 230000005540 biological transmission Effects 0.000 claims description 15
- 239000000835 fiber Substances 0.000 claims description 10
- 238000005070 sampling Methods 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 3
- 230000008859 change Effects 0.000 abstract description 3
- 238000000253 optical time-domain reflectometry Methods 0.000 abstract 2
- 238000004590 computer program Methods 0.000 description 6
- 238000012423 maintenance Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 206010063385 Intellectualisation Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Images
Abstract
The invention provides a control method and a system for intelligent optical metrology, comprising the following steps: when an optical fiber line fails or has an interruption risk, an optical line terminal OLT compares an optical power trace graph acquired by an optical time domain reflectometer OTDR with a non-fault optical fiber curve to determine a fault point and a fault position on the optical fiber line; based on a preset intelligent optical distribution switching scheme, the optical time domain reflectometer OTDR controls an optical switch OS on the first optical distribution network device ODN1 device, and switches the communication signal to other non-faulty optical fiber lines. The invention compares the collected optical power trace graph with the reference curve of the optical fiber in normal operation to determine the fault information, and the optical line terminal OLT starts the preset switching plan to guide the equipment to change the path in time and reports the state information of the equipment to the optical line terminal OLT, thereby realizing the fast, safe and reliable switching of the optical communication signals.
Description
Technical Field
The invention belongs to the technical field of intelligent optical distribution, and particularly relates to a control method and a control system for intelligent optical distribution measurement.
Background
In recent years, the power optical cable network is used as a main mode of a power communication network, and with the application of optical fiber transmission in the power communication network, the automatic management level of massive optical fibers is urgently needed to be improved. At present, an optical cable monitoring system cannot realize timely monitoring of dozens of lines, when a power optical cable network breaks down, safety and stability of production and operation of the whole power system are directly affected, and once important link communication breaks down, huge loss of a power grid is caused. The power optical fiber distribution communication network is an important component of a power transmission and transformation link of a smart power grid, and with the continuous improvement of the requirement on power supply reliability of the power industry, the power optical fiber distribution communication network is required to monitor the operation condition of a distribution network in real time and realize the real-time processing of faults, so that the management capability of power production operation and the power supply service level are improved.
The electric power optical fiber distribution network mainly uses an electric power Passive Optical Network (PON), and the characteristics of layered classification and wide coverage area make the monitoring of the distribution network very difficult. The PON comprises an OLT, an ONU and an ODN system, wherein the ODN system is a point-to-multipoint bridge for the OLT and the ONU and mainly comprises an optical distribution frame, an optical cross-connecting box, an optical distribution box, an optical splitter, an optical distribution box, an optical cable and other passive devices, and an optical transmission channel is provided between the OLT and the ONU. The structure of the ODN is generally point-to-multipoint, and the structure thereof can be roughly divided into 4 types, i.e., star, tree, bus and ring, according to the connection manner. The tree structure is most commonly used, and because an optical distribution frame, an optical cross-connecting box, an optical splitter, an optical fiber and the like in the ODN are placed outdoors for a long time, the optical fiber communication quality is reduced or even the communication is interrupted due to the influence of wind, rain and sunshine, the conditions of looseness of a connector of the optical fiber, falling of a cladding of the optical fiber, breakage of the optical fiber and the like are possibly caused, if the conditions are not found in time, the communication of a user is easily interrupted, and the maintenance difficulty of the system is greatly increased. Purely manual maintenance is time consuming and does not necessarily lead to satisfactory results.
With the increasing expansion of ODN construction scale and more resources, the traditional ODN resource management mode has many disadvantages that the ODN cannot be coordinated. When the user network fails, the maintenance of the ODN network is started, and the passive operation and maintenance mode usually causes the quality of the whole network to be reduced.
Therefore, how to realize the intellectualization of the ODN and establish a perfect intelligent optical metrology control system is a problem to be solved at present.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides a control method and a control system for intelligent optical metrology.
A control method for intelligent optical metrology, comprising the steps of: when detecting that an optical fiber line has a fault or has an interruption risk, the optical line terminal OLT compares an optical power trace graph acquired by an Optical Time Domain Reflectometer (OTDR) with a non-fault optical fiber curve to determine a fault point and a fault position on the optical fiber line; based on a preset intelligent optical distribution switching scheme, the optical time domain reflectometer OTDR controls an optical switch OS on the optical distribution network device ODN1 device side, and switches the communication signal to other non-faulty optical fiber lines.
When an optical fiber line fails or has an interruption risk, the optical line terminal OLT compares an optical power trace graph acquired by an optical time domain reflectometer OTDR with a non-failed optical fiber curve to determine a failure point and a failure position on the optical fiber line, including: forming a backward Rayleigh scattered light power trace diagram by using the position of the optical fiber as a horizontal coordinate and using the backward scattered power dB value of a sampling point as a vertical coordinate through backward Rayleigh scattered light collected by an Optical Time Domain Reflectometer (OTDR);
comparing a backward Rayleigh scattering light power trace diagram with a non-fault optical fiber curve to obtain fault points and event types existing on an optical fiber circuit in the Passive Optical Network (PON); and determining the corresponding fault position of the fault point in the map by utilizing a Geographic Information System (GIS).
Based on a preset intelligent optical distribution switching scheme, an Optical Time Domain Reflectometer (OTDR) controls an Optical Switch (OS) on Optical Distribution Network (ODN) equipment and switches a communication signal to other non-fault optical fiber lines, and the method comprises the following steps: when the optical time domain reflectometer OTDR detects that the optical fiber line 1 between the main optical distribution network device ODN1 and the slave optical distribution network device ODN2 has a fault or a risk of a final interruption, the optical time domain reflectometer OTDR controls an optical switch on the main optical distribution network device ODN1 side according to a preset intelligent optical distribution switching scheme, and switches a communication signal to other non-faulty optical fiber lines 6;
the slave optical distribution network device ODN2 on the faulty optical fiber line transmits the status information of the optical network unit ONU connected thereto and the status information of itself to the optical line terminal OLT through the other slave optical distribution network device ODN3 via the optical time domain reflectometer OTDR.
Based on a preset intelligent optical distribution switching scheme, an optical time domain reflectometer OTDR controls an optical switch OS on an optical distribution network device ODN1 device, and switches a communication signal to other non-faulty optical fiber lines, including: when the optical time domain reflectometer OTDR detects that the optical fiber line 2 between the slave optical distribution network device ODN2 and the optical network unit ONU1 connected thereto has a fault or an interruption risk, the optical time domain reflectometer OTDR controls the optical switch OS on the slave optical distribution network device ODN2 according to a preset intelligent optical distribution switching scheme, and switches the communication signal to other non-faulty optical fiber lines 3; the optical network unit ONU1 uses the optical fiber line 7 to transmit its own status information to the optical line terminal OLT through the optical network unit ONU2 via the optical time domain reflectometer OTDR.
Detecting each optical fiber line connected to the PON by using an OTDR (optical time Domain reflectometer);
the event types include: non-reflective events that occur with a bent or spliced fiber optic line and reflective events that occur at a break or splice in a fiber optic line.
A control system for intelligent optical metrology, comprising: the fault determining module is used for comparing an optical power trace graph acquired by an Optical Time Domain Reflectometer (OTDR) with a non-fault optical fiber curve by the Optical Line Terminal (OLT) to determine a fault point and a fault position on an optical fiber line; and the switching module is used for controlling an optical switch OS on the optical distribution network device ODN1 by using an Optical Time Domain Reflectometer (OTDR) based on a preset intelligent optical distribution switching scheme and switching the communication signal to other non-fault optical fiber lines.
A fault determination module comprising: the device comprises an optical power trajectory diagram submodule, a comparison submodule, a Geographic Information System (GIS) module and a starting module; the optical power trace graph module is used for forming a backward Rayleigh scattering optical power trace graph which takes the position of an optical fiber as a horizontal coordinate and the backward scattering power dB value of a sampling point as a vertical coordinate through backward Rayleigh scattering light collected by an Optical Time Domain Reflectometer (OTDR); the comparison module is used for comparing a backward Rayleigh scattering light power locus diagram with a non-fault optical fiber curve to obtain fault points and event types existing on an optical fiber line in the Passive Optical Network (PON);
and the geographic information system GIS module is used for determining the corresponding fault position of the fault point in the map.
A switching module comprising: the system comprises an optical distribution network equipment switching module and an optical distribution network equipment information transmission module;
the optical distribution network device switching module is configured to, when the optical time domain reflectometer OTDR detects that the optical fiber line 1 between the master optical distribution network device ODN1 and the slave optical distribution network device ODN2 has a fault or a risk of a final interruption, control an optical switch on the master optical distribution network device ODN1 side according to a preset intelligent optical distribution switching scheme, and switch a communication signal to another non-faulty optical fiber line 6;
and the optical distribution network equipment information transmission module is used for transmitting the state information of the optical network unit ONU connected with the optical distribution network equipment ODN2 on the fault optical fiber line and the state information of the optical network unit ONU to the optical line terminal OLT through the optical time domain reflectometer OTDR by passing through other slave optical distribution network equipment ODN 3.
A switching module comprising: the optical network unit switching module and the optical network unit information transmission module;
an optical network unit switching module, configured to, when an optical time domain reflectometer OTDR detects that a fault or an interruption risk exists in an optical fiber line 2 between an optical distribution network device ODN2 and an optical network unit ONU1 connected to the optical time domain reflectometer OTDR, control an optical switch OS on an optical distribution network device ODN2 according to a preset intelligent optical distribution switching scheme, and switch a communication signal to another non-faulty optical fiber line 3;
and the optical network unit information transmission module is used for enabling the optical network unit ONU1 to utilize the optical fiber line 7 to connect the state information of the optical network unit ONU1, and the optical network unit ONU2 transmits the state information to the optical line terminal OLT through the optical time domain reflectometer OTDR.
The detection module is used for detecting each optical fiber line connected to the PON by using an OTDR (optical time domain reflectometer) when the optical fiber line has a fault or has an interruption risk;
the event types include: non-reflective events that occur with a bent or spliced fiber optic line and reflective events that occur at a break or splice in a fiber optic line.
Compared with the prior art, the invention has the beneficial effects that:
1. when an optical fiber line fails, the collected optical power track graph is compared with a reference curve of the optical fiber in normal working to determine fault information, and an Optical Line Terminal (OLT) starts a preset switching plan to guide equipment to change a path in time so as to realize rapid, safe and reliable switching of optical communication signals;
2. when detecting that an optical fiber line in the optical distribution network equipment ODN or an optical fiber line accessed to the optical network unit ONU has a fault, an optical switch at the side of the optical distribution network equipment ODN starts a preset switching plan to ensure the normal operation of an optical communication link;
3. the invention utilizes the optical time domain reflectometer OTDR at the side of the optical line terminal OLT to inspect each access optical fiber, and reports the state information of each device to the OLT of the optical line terminal through the optical time domain reflectometer OTDR, thereby realizing the remote switching control of the ODN of the intelligent optical distribution network device and further realizing the automatic switching of the optical path.
Drawings
FIG. 1 is a flow chart of the control system design of the present invention;
fig. 2 is a schematic structural diagram of an electrical passive optical network PON according to the present invention;
fig. 3 is a block diagram of the control system of the present invention.
Detailed Description
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
As shown in fig. 1, the control method of the present invention includes the steps of: detecting each optical fiber line connected to the PON by using an OTDR (optical time Domain reflectometer); when detecting that the optical fiber line has a fault or has an interruption risk, the optical line terminal OLT compares an optical power trace graph acquired by the optical time domain reflectometer OTDR with a normal optical fiber curve to determine a fault point and a fault position on the optical fiber line; based on a preset intelligent optical distribution switching scheme, the optical time domain reflectometer OTDR controls an optical switch OS on the optical distribution network device ODN1 device side, and switches the communication signal to other healthy optical fiber lines.
As shown in fig. 2, the PON structure of the passive optical network of the present invention includes: the optical line terminal OLT, the optical distribution network equipment ODN and the optical network unit ONU.
As shown in fig. 3, in the present invention, an optical path switch OS is introduced to optical distribution frames, optical cross-connect boxes and other optical distribution network devices of an optical distribution network device ODN system, and spare optical fibers are designed between an optical network unit ONU and the ONU at a terminal, and between the ODN device and the ODN device, when an optical time domain reflectometer OTDR monitors that an optical fiber line has a fault or a risk, the OTDR inspects each accessed optical fiber, intelligently analyzes a fault point, a fault location and corresponding parameters existing on the optical fiber, obtains a fault analysis report, remotely controls the optical switch OS on the ODN device according to an intelligent optical distribution switching scheme preset by the system, switches a communication signal to a healthy optical fiber line, and realizes automatic and fast switching of the optical fiber line.
When the optical line terminal OLT analyzes the type and location of an optical fiber fault, a communication path of the terminal communication equipment ONU is re-planned according to an intelligent optical distribution switching scheme preset by the system, and the OS optical switch is controlled in time through the OTDR to switch the optical fiber line, at this time, the spare connection optical fibers between the ONU and the ONU, and between the ODN and the ODN are used, for example, when a line (2) accessed by the terminal communication equipment ONU1 has a fault or a risk that communication interruption may be caused, the OS optical switch on the ODN equipment 1 side further guides the optical switch on the ODN equipment 2 side according to the intelligent optical distribution switching scheme, and switches a communication signal to another healthy optical cable line (3).
When the communication signal of the communication device ONU1 is switched to the optical cable line (3), the OTDR transmits the detected power optical fiber status data to the ONU1, and instructs the ONU1 to change the path in time, and transmits the status information of the ONU1 to the OTDR, thereby realizing automatic switching of the communication path.
The OLT collects returned back Rayleigh scattered light through the OTDR to form a back Rayleigh scattered light power trace diagram which takes the position of the optical fiber as an abscissa and the back scattered power dB value of a sampling point as an ordinate, analyzes and compares the trace diagram with a back Rayleigh scattered curve when the optical fiber normally works, judges fault points and event types (such as non-reflection events under the conditions that the optical fiber is bent or has a dissolved joint, and reflection events at the fracture part or the joint of the optical fiber) existing on the optical fiber, realizes accurate positioning of fault positions by combining a Geographic Information System (GIS), directly marks the accurate positions of the faults on the map, and finally obtains a fault analysis report; and calling a preset intelligent optical distribution switching scheme according to the comparison result, controlling optical switches at the equipment sides of the ODN, and rapidly switching the optical fiber circuit, so as to realize automatic switching of the optical path and ensure the normal operation of the communication service.
Introducing optical switch light at the ODN device side, for example, when the OTDR detects that a line (2) accessed by the ONU1 has a fault or may cause a risk of communication interruption, according to an intelligent optical distribution switching scheme, the OTDR instructs an optical switch OS at the ODN device 1 side to switch to another healthy optical cable line (3), and then connects to the ONU1 through a spare optical fiber line (7) between the ONU2 and the ONU1, so as to implement real-time switching of a communication path and ensure normal operation of an optical communication link, and the OTDR transmits detected status data of the power optical cable to the ONU1 through the changed communication path, and simultaneously the OTDR 1 transmits the status information of the device ONU1 to the OTDR through the ONU2 by the original path.
When the OTDR detects that there is a fault in the optical fiber line (1) between the ODN device 1 and the ODN device 2 or there is a risk that communication may be interrupted, according to an intelligent optical distribution switching scheme stored on the OLT side, the OTDR guides an optical switch on the ODN device 1 side to switch to an optical fiber line (6), and then connects the ODN device 2 through a backup optical fiber line (5) between the ODN device 2 and the ODN device 3, so as to ensure normal operation of the ONU device under the ODN device 2, and the OTDR transmits the detected network status data to the ODN device 2 through a changed communication path, and meanwhile, the ODN device 2 also transmits the ONU device under the ODN device 2 and the status information of the device itself to the OTDR through the ODN device 3 through the original path.
The intelligent optical distribution switching scheme can be used for editing and maintaining the state information of the whole distribution network received by the OTDR through a corresponding human-computer interface, so that the normal operation of the optical fiber link of the whole distribution network is ensured.
Based on the same inventive concept, the invention also provides a control system for intelligent optical metrology, which is described below.
The control system includes: the fault determining module is used for comparing an optical power trace graph acquired by an Optical Time Domain Reflectometer (OTDR) with a non-fault optical fiber curve by the Optical Line Terminal (OLT) to determine a fault point and a fault position on an optical fiber line; and the switching module is used for controlling an optical switch OS on the optical distribution network device ODN1 by using an Optical Time Domain Reflectometer (OTDR) based on a preset intelligent optical distribution switching scheme and switching the communication signal to other non-fault optical fiber lines.
A fault determination module comprising: the device comprises an optical power trajectory diagram submodule, a comparison submodule, a Geographic Information System (GIS) module and a starting module; the optical power trace graph module is used for forming a backward Rayleigh scattering optical power trace graph which takes the position of an optical fiber as a horizontal coordinate and the backward scattering power dB value of a sampling point as a vertical coordinate through backward Rayleigh scattering light collected by an Optical Time Domain Reflectometer (OTDR); the comparison module is used for comparing a backward Rayleigh scattering light power locus diagram with a non-fault optical fiber curve to obtain fault points and event types existing on an optical fiber line in the Passive Optical Network (PON);
and the geographic information system GIS module is used for determining the corresponding fault position of the fault point in the map.
A switching module comprising: the system comprises an optical distribution network equipment switching module and an optical distribution network equipment information transmission module; the optical distribution network device switching module is configured to, when the optical time domain reflectometer OTDR detects that the optical fiber line 1 between the master optical distribution network device ODN1 and the slave optical distribution network device ODN2 has a fault or a risk of a final interruption, control an optical switch on the master optical distribution network device ODN1 side according to a preset intelligent optical distribution switching scheme, and switch a communication signal to another non-faulty optical fiber line 6;
and the optical distribution network equipment information transmission module is used for transmitting the state information of the optical network unit ONU connected with the optical distribution network equipment ODN2 on the fault optical fiber line and the state information of the optical network unit ONU to the optical line terminal OLT through the optical time domain reflectometer OTDR by passing through other slave optical distribution network equipment ODN 3.
A switching module comprising: the optical network unit switching module and the optical network unit information transmission module;
an optical network unit switching module, configured to, when an optical time domain reflectometer OTDR detects that a fault or an interruption risk exists in an optical fiber line 2 between an optical distribution network device ODN2 and an optical network unit ONU1 connected to the optical time domain reflectometer OTDR, control an optical switch OS on an optical distribution network device ODN2 according to a preset intelligent optical distribution switching scheme, and switch a communication signal to another non-faulty optical fiber line 3;
and the optical network unit information transmission module is used for enabling the optical network unit ONU1 to utilize the optical fiber line 7 to connect the state information of the optical network unit ONU1, and the optical network unit ONU2 transmits the state information to the optical line terminal OLT through the optical time domain reflectometer OTDR.
The detection module is used for detecting each optical fiber line connected to the PON by using an OTDR (optical time domain reflectometer) when the optical fiber line has a fault or has an interruption risk; the event types include: non-reflective events that occur with a bent or spliced fiber optic line and reflective events that occur at a break or splice in a fiber optic line.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: modifications and equivalents may be made to the embodiments of the invention without departing from the spirit and scope of the invention, which is to be covered by the claims.
Claims (14)
1. A control method for intelligent optical metrology, comprising the steps of:
when detecting that an optical fiber line has a fault or has an interruption risk, an Optical Line Terminal (OLT) compares an optical power trace graph acquired by an Optical Time Domain Reflectometer (OTDR) with a non-fault optical fiber curve to determine a fault point and a fault position on the optical fiber line;
based on a preset intelligent optical distribution switching scheme, the Optical Time Domain Reflectometer (OTDR) controls an Optical Switch (OS) at the side of optical distribution network equipment (ODN) equipment to switch a communication signal to other non-fault optical fiber lines;
further comprising:
and the slave optical distribution network equipment (ODN2) on the fault optical fiber line transmits the state information of the Optical Network Unit (ONU) connected with the slave optical distribution network equipment and the state information of the slave optical distribution network equipment to the Optical Line Terminal (OLT) through the Optical Time Domain Reflectometer (OTDR).
2. The method according to claim 1, wherein when the optical fiber line is faulty or at risk of interruption, the Optical Line Terminal (OLT) compares an optical power trace collected by the Optical Time Domain Reflectometer (OTDR) with a non-faulty optical fiber curve to determine a fault point and a fault location on the optical fiber line, and the method includes:
the Optical Line Terminal (OLT) forms a backward Rayleigh scattered light power trace diagram which takes the position of an optical fiber as a horizontal coordinate and the backward scattered power dB value of a sampling point as a vertical coordinate through backward Rayleigh scattered light collected by the Optical Time Domain Reflectometer (OTDR);
comparing the backward Rayleigh scattered light power trace graph with the non-fault optical fiber curve to obtain fault points and event types existing on an optical fiber circuit in a Passive Optical Network (PON);
and determining the corresponding fault position of the fault point in the map by utilizing a Geographic Information System (GIS).
3. The control method according to claim 1, wherein the Optical Time Domain Reflectometer (OTDR) controls an Optical Switch (OS) on an Optical Distribution Network (ODN) device to switch the communication signal to other non-faulty optical fiber lines based on a preset intelligent optical distribution switching scheme, comprising:
when the Optical Time Domain Reflectometer (OTDR) detects that the optical fiber line (1) between the master optical distribution network device (ODN1) and the slave optical distribution network device (ODN2) has a fault or an interruption risk, the Optical Time Domain Reflectometer (OTDR) controls the optical switch on the master optical distribution network device (ODN1) side according to the preset intelligent optical distribution switching scheme, and switches the communication signal to other non-faulty optical fiber lines (6).
4. The control method according to claim 1, wherein the Optical Time Domain Reflectometer (OTDR) controls an Optical Switch (OS) on an Optical Distribution Network (ODN) device to switch the communication signal to other non-faulty optical fiber lines based on a preset intelligent optical distribution switching scheme, comprising:
when the Optical Time Domain Reflectometer (OTDR) detects that there is a fault or a risk of interruption in an optical fiber line (2) between the slave optical distribution network device (ODN2) and an optical network unit (ONU1) connected thereto, the Optical Time Domain Reflectometer (OTDR) controls an Optical Switch (OS) on the slave optical distribution network device (ODN2) according to the preset intelligent optical distribution switching scheme, and switches a communication signal to another non-faulty optical fiber line (3).
5. The control method according to claim 1 or 4, characterized by further comprising:
the optical network unit (ONU1) utilizes an optical fiber line (7) to transmit the state information of the optical network unit (ONU2) to the Optical Line Terminal (OLT) through the Optical Time Domain Reflectometer (OTDR).
6. The control method according to claim 1,
and detecting each optical fiber line accessing the power Passive Optical Network (PON) by using the Optical Time Domain Reflectometer (OTDR).
7. The control method according to claim 2, wherein the event type includes:
non-reflective events that occur with a bent or spliced fiber optic line and reflective events that occur at a break or splice in a fiber optic line.
8. A control system for intelligent optical metrology, comprising:
the fault determining module is used for comparing an optical power trace graph acquired by an Optical Time Domain Reflectometer (OTDR) with a non-fault optical fiber curve by an Optical Line Terminal (OLT) to determine a fault point and a fault position on an optical fiber line;
the Optical Time Domain Reflectometer (OTDR) controls an Optical Switch (OS) on the optical distribution network device (ODN1) based on a preset intelligent optical distribution switching scheme, and switches the communication signal to other non-faulty optical fiber lines;
and the optical distribution network equipment information transmission module is used for transmitting the state information of the Optical Network Unit (ONU) connected with the optical distribution network equipment (ODN2) on the fault optical fiber line and the state information of the Optical Network Unit (ONU) to the Optical Line Terminal (OLT) through the Optical Time Domain Reflectometer (OTDR) through other slave optical distribution network equipment (ODN 3).
9. The control system of claim 8, wherein the fault determination module comprises: the device comprises an optical power trajectory diagram submodule, a comparison submodule, a Geographic Information System (GIS) module and a starting module;
the optical power trace graph submodule is configured to form a backward rayleigh scattered light power trace graph with the position of an optical fiber as a horizontal coordinate and a backward scattered power dB value of a sampling point as a vertical coordinate, by backward rayleigh scattered light collected by the Optical Line Terminal (OLT) through the Optical Time Domain Reflectometer (OTDR);
the comparison pair module is used for comparing the backward Rayleigh scattering light power locus diagram with the non-fault optical fiber curve to obtain fault points and event types existing on an optical fiber circuit in a Passive Optical Network (PON);
and the GIS module is used for determining the corresponding fault position of the fault point in the map.
10. The control system of claim 8, wherein the switching module comprises: the system comprises an optical distribution network equipment switching module and an optical distribution network equipment information transmission module;
the optical distribution network device switching module is configured to, when the Optical Time Domain Reflectometer (OTDR) detects that a fault or an interruption risk exists in an optical fiber line (1) between a master optical distribution network device (ODN1) and a slave optical distribution network device (ODN2), control an optical switch on the master optical distribution network device (ODN1) side according to the preset intelligent optical distribution switching scheme, and switch a communication signal to another non-fault optical fiber line (6).
11. The control system of claim 8, wherein the switching module comprises: the optical network unit switching module and the optical network unit information transmission module;
the optical network unit switching module is configured to, when the Optical Time Domain Reflectometer (OTDR) detects that a fault or an interruption risk exists in an optical fiber line (2) between the slave optical distribution network device (ODN2) and an optical network unit (ONU1) connected to the slave optical distribution network device (ODN2), control an Optical Switch (OS) on the slave optical distribution network device (ODN2) according to the preset intelligent optical distribution switching scheme, and switch a communication signal to another non-faulty optical fiber line (3).
12. The control system according to claim 8 or 11,
the optical network unit information transmission module is used for the optical network unit (ONU1) to connect the state information thereof through an optical fiber line (7), and the optical network unit (ONU2) is transmitted to the Optical Line Terminal (OLT) through the Optical Time Domain Reflectometer (OTDR).
13. The control system of claim 8, further comprising:
the detection module is used for detecting each optical fiber line connected to the Passive Optical Network (PON) by using an Optical Time Domain Reflectometer (OTDR) when the optical fiber line has a fault or has an interruption risk.
14. The control system of claim 9, wherein the event types include:
non-reflective events that occur with a bent or spliced fiber optic line and reflective events that occur at a break or splice in a fiber optic line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711170081.XA CN109818671B (en) | 2017-11-22 | 2017-11-22 | Control method and system for intelligent optical metrology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711170081.XA CN109818671B (en) | 2017-11-22 | 2017-11-22 | Control method and system for intelligent optical metrology |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109818671A CN109818671A (en) | 2019-05-28 |
| CN109818671B true CN109818671B (en) | 2021-08-06 |
Family
ID=66600935
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711170081.XA Active CN109818671B (en) | 2017-11-22 | 2017-11-22 | Control method and system for intelligent optical metrology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109818671B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111082520B (en) * | 2019-11-28 | 2021-07-23 | 广东电网有限责任公司汕头供电局 | Method, equipment and storage medium for operation control of optical distribution network |
| CN111786721A (en) * | 2020-08-14 | 2020-10-16 | 新疆般若航通智能科技有限公司 | Mutual backup method based on dual-optical dual-network link and mutual backup device of link |
| CN112615667A (en) * | 2020-11-30 | 2021-04-06 | 国网山东省电力公司滨州供电公司 | Power optical cable fault first-aid repair system |
| CN117240349B (en) * | 2023-11-10 | 2024-02-06 | 北京中昱光通科技有限公司 | Double-main-path optical fiber automatic switching protection method and system based on online OTDR monitoring |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101043272A (en) * | 2006-06-08 | 2007-09-26 | 华为技术有限公司 | System and method for detecting optical fiber wiring troubles |
| JP2008003068A (en) * | 2006-05-25 | 2008-01-10 | Fujikura Ltd | Optical transmission line monitor, optical transmission line monitoring method, and computer program |
| CN102684780A (en) * | 2012-02-27 | 2012-09-19 | 武汉市普林电子有限责任公司 | Optical network protecting method and optical fiber line switching equipment |
| CN203445988U (en) * | 2013-08-23 | 2014-02-19 | 于佐成 | Fiber protective device for passive optical network |
| CN107017942A (en) * | 2017-05-22 | 2017-08-04 | 苏州席正通信科技有限公司 | A kind of fiber network monitoring and management system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2684588T3 (en) * | 2011-08-22 | 2018-10-03 | Huawei Technologies Co., Ltd. | Method, device and optical network system to detect faults in the optical distribution network |
-
2017
- 2017-11-22 CN CN201711170081.XA patent/CN109818671B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008003068A (en) * | 2006-05-25 | 2008-01-10 | Fujikura Ltd | Optical transmission line monitor, optical transmission line monitoring method, and computer program |
| CN101043272A (en) * | 2006-06-08 | 2007-09-26 | 华为技术有限公司 | System and method for detecting optical fiber wiring troubles |
| CN102684780A (en) * | 2012-02-27 | 2012-09-19 | 武汉市普林电子有限责任公司 | Optical network protecting method and optical fiber line switching equipment |
| CN203445988U (en) * | 2013-08-23 | 2014-02-19 | 于佐成 | Fiber protective device for passive optical network |
| CN107017942A (en) * | 2017-05-22 | 2017-08-04 | 苏州席正通信科技有限公司 | A kind of fiber network monitoring and management system |
Non-Patent Citations (1)
| Title |
|---|
| 基于OTDR的EPON在线监测和保护系统的研究;肖天雷;《中国优秀硕士学位论文全文数据库 信息科技辑》;20120715(第07期);第4-6，23-25，43-45页及附图1-2，5-4 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109818671A (en) | 2019-05-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103441794B (en) | Transformer station's optical fiber failure positioning system and method | |
| CN109818671B (en) | Control method and system for intelligent optical metrology | |
| CN202856733U (en) | Optical cable management system ocms | |
| CN101252393B (en) | Optic cable automatic monitoring system with optical fiber automatic switch unit | |
| CN100401661C (en) | Optical fibre fault monitoring and positioning system for communication network and method thereof | |
| CN103281122B (en) | A kind of optical cable on-line monitoring improves the method for alarm accuracy rate | |
| CN107528630B (en) | Dual-mode optical fiber monitoring system and method with protection optical path and fault self-healing function | |
| CN104283607A (en) | Optical fiber communication network monitoring protecting system and method thereof | |
| KR100952539B1 (en) | Real-time Monictoring Apparatus and Method for Obstacle in Optical Cable | |
| CN103166699A (en) | Method and system for positioning fault of optical fiber behind optical splitter in passive optical network (PON) | |
| CN104734776B (en) | Optic fiber monitoring system and monitoring method switching three operation modes freely | |
| CN111884709B (en) | Railway communication optical cable on-line monitoring system and method | |
| CN106330298A (en) | Real-time optical cable fiber core monitoring system | |
| CN205407823U (en) | Optical cable fibre core intelligent monitoring system | |
| CN110086528A (en) | A kind of resource management system based on optical cable on-line monitoring | |
| CN104320185A (en) | Optical fiber circuit monitoring system | |
| CN102684779B (en) | Centralized measurement device, failure monitoring method and system | |
| CN203261335U (en) | Optical cable on-line monitoring device | |
| CN110086531A (en) | A kind of fiber optic testing system based on local area network | |
| CN110086529A (en) | A kind of detecting and analysing system based on fiber optic cable monitor station | |
| CN106788701B (en) | A kind of method and system positioning the segment fault of ODN network | |
| CN111277324A (en) | Optical fiber link channel monitoring system | |
| CN103532794A (en) | Method for automatically switching stable control strategies based on warning signals of synchronous digital hierarchy equipment | |
| CN201854282U (en) | Online monitoring device for multichannel optical fibers based on power partition and OTDR | |
| CN208445560U (en) | A kind of communications optical cable line detection system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |