CN104518826B - A kind of method, equipment and system for monitoring fiber failure - Google Patents
A kind of method, equipment and system for monitoring fiber failure Download PDFInfo
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- CN104518826B CN104518826B CN201310462771.8A CN201310462771A CN104518826B CN 104518826 B CN104518826 B CN 104518826B CN 201310462771 A CN201310462771 A CN 201310462771A CN 104518826 B CN104518826 B CN 104518826B
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Abstract
The embodiment of the present invention provides a kind of method, equipment and system for monitoring fiber failure, methods described is by sending the first test signal from the A ends of optical fiber to be detected to B ends respectively and the second test signal being sent from the B ends of the detection fiber to A ends, wherein, the A ends of the optical fiber to be detected are arranged on the Single port of fibre distribution frame, and the B ends of the optical fiber to be detected are concatenated into by jumping fiber on the another port of the fibre distribution frame；The first test signal returned from the A ends of the optical fiber to be detected to B ends and the second test signal returned from the B ends of the testing fiber to A ends are received respectively；When the optical fiber to be detected breaks down, according to the first test signal of the return and the second test signal of the return, determine the position of the trouble point of the optical fiber to be detected, so as to realize the optical power monitoring purpose integrated with fault location test, so as to reduce the cost of monitoring Cable's Fault.
Description
Technical field
The present invention relates to the communications field, more particularly to a kind of method, equipment and system for monitoring fiber failure.
Background technology
Optical cable monitoring system makes whether optical cable operation normally judges by being monitored to optical cable.It is abnormal
It during situation, can be alarmed, and be tested accordingly, occur point to be accurately positioned failure.
Optical cable monitoring system is using alarm indicating member（Alarm Indication Unit, AIU）Power in optical fiber is entered
Row monitoring, so as to monitor the attenuation change of optical fiber.When optical fiber attenuation is less than more than some threshold value, or reception light optical power monitoring
During some numerical value, Cable's Fault alarm is produced.When alerting, operating personnel's control optical switch element（Optical
Switching Unit, OSU）Connect OTDR and standby fine port, realize to standby fine state verification, with localization of faults position and
Fault type.
Prior art monitors the attenuation change of optical fiber in real time using light power meter, finds to carry out using OTDR during failure
Test, in order to realize OTDR many optical cables share, reduce monitoring device investment, generally using photoswitch connection testing fiber with
OTDR.Therefore, optical power monitoring equipment is separated with fault location test equipment, and fault location test equipment needs to use
OTDR coordinates photoswitch, and equipment cost is high, and the testing time is long.
The content of the invention
The embodiments of the invention provide it is a kind of monitor fiber failure method, it is desirable to provide by using optical power monitoring with
The equipment of fault location test integration reduces the solution of optical cable monitoring system cost.
In a first aspect, a kind of method for monitoring fiber failure, methods described includes：
The first test signal is sent from the A ends of optical fiber to be detected to B ends respectively and from the B ends of the detection fiber to A
End sends the second test signal, wherein, the A ends of the optical fiber to be detected are arranged on the Single port of fibre distribution frame, described to treat
The B ends of detection fiber are concatenated into by jumping fiber on the another port of the fibre distribution frame；
The first test signal returned from the A ends of the optical fiber to be detected to B ends is received respectively and treats light-metering from described
The second test signal that fine B ends are returned to A ends；
When the optical fiber to be detected breaks down, according to the second of the first test signal of the return and the return
Test signal, determines the position of the trouble point of the optical fiber to be detected.
It is described to work as the optical fiber to be detected with reference in a first aspect, in the first possible implementation of first aspect
During failure, according to the first test signal of the return and the second test signal of the return, determine described to be detected
The position of the trouble point of optical fiber, including：
When the power of the first test signal of the return of the reception is less than predetermined power threshold, when determining Fisrt fault
Carve；
When the power of the second test signal of the return of the reception is less than predetermined power threshold, when determining the second failure
Carve；
According to Fisrt fault moment and the second fault moment, the fault points of optical cables position is determined.
It is described to work as the optical fiber to be detected with reference in a first aspect, in second of possible implementation of first aspect
During failure, according to the first test signal of the return and the second test signal of the return, determine described to be detected
The position of the trouble point of optical fiber, including：
When the bit error rate of the first test signal of the return of the reception is more than predetermined bit error rate threshold, the first event is determined
Hinder the moment；
When the bit error rate of the second test signal of the return of the reception is more than predetermined bit error rate threshold, the second event is determined
Hinder the moment；
The fault points of optical cables position is determined according to Fisrt fault moment and the second fault moment.
With reference in a first aspect, in the third possible implementation of first aspect, methods described also includes：
First test signal is converted into the first test optical signal, the first test optical signal is forwarded to be detected
Optical fiber；
Second test signal is converted into the second test optical signal.
With reference to the third possible implementation of first aspect, in the 4th kind of possible implementation of first aspect
In, the wavelength of the first test optical signal is identical with the wavelength of the described second test optical signal, or, first test light
The wavelength of the wavelength of signal and the described second test optical signal is differed.
A kind of second aspect, equipment of fiber laser arrays, the equipment includes：
Sending module, for sending the first test signal from the A ends of optical fiber to be detected to B ends respectively and from the detection
The B ends of optical fiber send the second test signal to A ends, wherein, the A ends of the optical fiber to be detected are arranged on one end of fibre distribution frame
On mouth, the B ends of the optical fiber to be detected are concatenated into by jumping fiber on the another port of the fibre distribution frame；
Receiving module, the first test signal returned for receiving respectively from the A ends of the optical fiber to be detected to B ends and
The second test signal returned from the B ends of the testing fiber to A ends；
Fault determination module, for when the optical fiber to be detected breaks down, being believed according to the first of the return the test
Number and the return the second test signal, determine the position of the trouble point of the optical fiber to be detected.
With reference to second aspect, in the first possible implementation of second aspect, the fault determination module is specific
For：
When the power of the first test signal of the return of the reception is less than predetermined power threshold, when determining Fisrt fault
Carve；
When the power of the second test signal of the return of the reception is less than predetermined power threshold, when determining the second failure
Carve；
According to Fisrt fault moment and the second fault moment, the fault points of optical cables position is determined.
With reference to second aspect, in second of possible implementation of second aspect, the fault determination module is specific
For：
When the bit error rate of the first test signal of the return of the reception is more than predetermined bit error rate threshold, the first event is determined
Hinder the moment；
When the bit error rate of the second test signal of the return of the reception is more than predetermined bit error rate threshold, the second event is determined
Hinder the moment；
The fault points of optical cables position is determined according to Fisrt fault moment and the second fault moment.
With reference to second aspect, in the third possible implementation of second aspect, the equipment also turns including photoelectricity
Block and the first coupler are changed the mold, wherein, the photoelectric conversion module is used for：
First test signal is converted into the first test optical signal, optical signal is tested by described first by the first coupler
The B ends are coupled to from the A ends；
Second test signal is converted into the second test optical signal, optical signal is tested by described second by the second coupler
The A ends are coupled to from the B ends.
With reference to the third possible implementation of second aspect, in the 4th kind of possible implementation of second aspect
In, the receiving module specifically for：
Separated by the second coupler and receive the first test optical signal, optical signal is tested by the first of the return
Carry out the first test electric signal that opto-electronic conversion obtains the return；
The second test optical signal of the return is separated and received by the first coupler, by the second test of the return
Optical signal carries out opto-electronic conversion and obtains the second test electric signal.
With reference to second aspect, in the 5th kind of possible implementation of second aspect, the first test optical signal
Wavelength is identical with the wavelength of the described second test optical signal, or, the wavelength of the first test optical signal is surveyed with described second
The wavelength of examination optical signal is differed.
The third aspect, a kind of optic-fiber monitoring system, the equipment of the system including fiber laser arrays, trunk Optical Distribution Frame ODF,
Trunk optical fiber distribution terminal FDT, the A ends of the equipment of the fiber laser arrays are arranged on the Single port of the ODF, the fiber laser arrays
The B ends of equipment the another port of the ODF is concatenated into by jumping fiber；The equipment of the fiber laser arrays includes such as claim 6-
Equipment described in 11.
The embodiment of the present invention provides a kind of method for monitoring fiber failure, and methods described passes through respectively from optical fiber to be detected
A ends send the first test signal to B ends and the second test signal are sent from the B ends of the detection fiber to A ends, wherein, institute
The A ends for stating optical fiber to be detected are arranged on the Single port of fibre distribution frame, and the B ends of the optical fiber to be detected are concatenated into by jumping fiber
On the another port of the fibre distribution frame；The the first test letter returned from the A ends of the optical fiber to be detected to B ends is received respectively
Number and the second test signal for being returned from the B ends of the testing fiber to A ends；When the optical fiber to be detected breaks down,
According to the first test signal of the return and the second test signal of the return, the trouble point of the optical fiber to be detected is determined
Position, so as to realize the optical power monitoring purpose integrated with fault location test, thus reduce monitoring Cable's Fault into
This.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is a kind of application scenario diagram for monitoring Cable's Fault provided in an embodiment of the present invention；
Fig. 2 is a kind of method schematic diagram for monitoring fiber failure provided in an embodiment of the present invention；
Fig. 3 is the method schematic diagram of another monitoring fiber failure provided in an embodiment of the present invention；
Fig. 4 is a kind of method flow diagram for monitoring fiber failure provided in an embodiment of the present invention；
Fig. 5 is a kind of localization method schematic diagram of position of failure point provided in an embodiment of the present invention；
Fig. 6 is a kind of equipment structure chart of fiber laser arrays provided in an embodiment of the present invention；
Fig. 7 is a kind of system construction drawing of fiber laser arrays provided in an embodiment of the present invention；
Fig. 8 is the equipment structure chart of another fiber laser arrays provided in an embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
With reference to Fig. 1, Fig. 1 is a kind of application scenario diagram for monitoring Cable's Fault provided in an embodiment of the present invention.Such as Fig. 1 institutes
Show, left figure be annular fiber optic cable networks topological diagram, right figure be test optical fiber 1 with and node device connection diagram,
Wherein fiber optic cable monitor device 2 is arranged on node device trunk Optical Distribution Frame (Optical Distribution Frame, ODF)
Central machine room, and can be using independently installed or be used as the latter's One function module.In order to describe conveniently, hereafter by fiber optic cable monitor
Device 2 as node device ODF One function module.
As shown in figure 1, multiple node devices, ODF and trunk optical fiber distribution terminal（Fiber Distribution
Terminal, FDT）（It is easy to narration, it is numbered from 0#~n#, usual n≤8）, via optical cable segment（5）Optical fibre ring in series
Optical cable between fiber cable network, two of which node device turns into optical cable segment, and node device provides into end for the optical fiber in optical cable segment
With welding through-void, the fine Cheng Duan equal in each equipment of test as depicted shared, other optical fiber in optical cable segment according to
Its purposes is straight-through into end or welding in intermediary device（It is not drawn into figure）.
Generally, each optical cable segment has first end（A ends in figure）With the second end（B ends in figure）, wherein one end is in a section
Straight-through into end or welding in point device, the other end is then straight-through into end or welding in adjacent node device, and ODF is as whole
The initiating terminal of individual optical cable and end, i.e. optical cable the whole Cheng Duan in ODF.Specifically, it is assumed that the first end of optical cable segment --- whole
The first end of optical cable, in ODF into end, its second end is then inevitable in adjacent node device, such as FDT, Cheng Duan, the like it is last
One section of optical cable first end in n#FDT into behind end or welding, its second end then it is inevitable in ODF into end.
It is similar with optical cable, node device according to the end of its storage and processing optical cable not and wiring function difference, can be with
Out optical cable functional areas, Incoming optical cable functional areas and equipment wiring function area are divided into, as shown in the figure（Equipment wiring function area does not have
Draw）.In order to describe scheme, out optical cable functional areas are referred to as A areas, and Incoming optical cable functional areas are referred to as B areas.Correspondingly,
A areas pallet and B areas pallet are referred to as positioned at the pallet in A areas and the pallet in B areas.Equally, in order to describe conveniently, the office of optical cable segment
To be referred to as A to B to, i.e., away from this node device direction it is adjacent point to node device direction（A-B）With away from adjacent
Node device points to the direction of this node device.For example, as shown in figure 1, in ODF, by ODF（0#）A areas point to FDT（1#）
B areas be A to FDT（n#）A areas point to ODF（0#）B areas for B to.
As shown in figure 1, selecting a test optical fiber in every section of optical cable（1）It is connected with fiber optic cable monitor device 2.Specifically exist
ODF selections are respectively connected the test port 33 and ODF of fiber optic cable monitor device 5 A to B using jumping fiber 52 to test port 31
Connect, afterwards the intermediary device in fiber optic cable networks, such as FDT, test port 32 is subjected to jumper connection with jumping fiber 51.Optical cable
From test port 33 to jumper connection, optical signal is tested in the both direction transmitting of the optical fiber of cyclization to monitoring device 2 respectively, while connecing
Receive both direction（Call first direction and second direction in the following text）The test optical signal of transmission.For example, first direction is referred to optical cable A
The direction at B ends is pointed at end, i.e. A to, and second direction refers to the direction that A ends are pointed at optical cable B ends, i.e. B to.
A spare fibre is selected in every section of each optical cable as test optical fiber 1, and respectively in trunk light distribution
Frame (Optical Distribution Frame, ODF), trunk optical fiber distribution terminal（Fiber Distribution
Terminal, FDT）, two grades of FDT, fiber access terminals（Fiber Access Terminal, FAT）It is concatenated into using jumping fiber
Ring.The standby fine two ends of optical cable are attached with monitoring device respectively, and monitoring device launches continuous to opposite both direction simultaneously
Optical signal, while receiving the optical signal of both direction transmission.
Specifically, the structure chart of the monitoring device may be referred to Fig. 2, Fig. 2 is a kind of prison provided in an embodiment of the present invention
Survey the method schematic diagram of fiber failure.
As shown in Fig. 2 the monitoring device 2 includes fault determination module 25, test signal generation module 24, electro-optic conversion
Module 211 and 212, photoelectric conversion module 221 and 222, coupler 201 and 202 etc..The test signal module generation test letter
Numbers 291 and test signal 292, electrooptic conversion module 211 and 212 carries out electro-optic conversion and obtains the first test optical signal 231 respectively
With the second test optical signal 232.The test first tests optical signal 231 and is coupled into test optical fiber 1 by the first coupler 201
（It is usually standby fine, it is referred to as standby fine）Transmitted to first direction；The second test optical signal 232 passes through the coupling of the second coupler 202
Close and transmitted into test optical fiber 28 to second direction.232 points of the second test signal that first coupler 201 transmits second direction
The second test optical signal 232 is changed into the second test signal 272 from, photoelectric conversion module 221, and by the second test signal 272
It is sent to fault determination module 25.Second coupler 202 separates the first test optical signal 231 that first direction is transmitted, photoelectricity dress
Mold changing block 212 changes the first light signal 231 into the first test signal 271, and the first test signal 271 is delivered into failure determination
Module 25.When the first test test optical signal 232 of optical signal 231 and second is using being different wave length, in order to share one
Optical fiber 1, will not introduce big coupling loss, and coupler 201 and coupler 202 are passed first direction using wavelength multiplexing technique
The first defeated test optical signal 231 and the second test optical signal 232 of second direction transmission are tested at one is answered on optical fiber 1
With.If the first test test optical signal 232 of optical signal 231 and second is using phase co-wavelength, coupler 201 and coupler 202
Optical branching device or optical circulator can be used, and generally uses optical circulator to obtain and obtains coupling loss than relatively low,
Can be preferred as technology.
Assuming that wavelength first wave length and the second ripple is respectively adopted in the first test test optical signal 232 of optical signal 231 and second
It is long, and first wave length and second wave length according to can be the need for specifically it is equal, can also be unequal.Coupler 201 is by second
Second test optical signal 232 of wavelength is separated, and is sent to photoelectric conversion module 221, is recovered the second of second direction transmission
Test signal 272 is simultaneously sent to fault determination module 25 and is analyzed and then determine whether the fault moment that breaks down and record.With
Second testing signal process process is identical, the first test optical signal of the wavelength A first directions transmission isolated from coupler 202
Recover the first test signal 271 through photoelectric conversion module 222 and deliver to fault determination module 25 analyzed so that determine be
It is no to break down and record fault moment.Fault determination module determines light according to record Fisrt fault moment and the second fault moment
The location of fault of fine optical cable, i.e. trouble point respectively with node device ODF first end and the second end apart from L1 and L2, or
L1 be trouble point from photoelectric conversion module 212 with a distance from, and L2 be then trouble point from photoelectric conversion module 211 with a distance from.
As shown in figure 3, Fig. 3 is the method schematic diagram of another monitoring fiber failure provided in an embodiment of the present invention.Fig. 3 is
One preferred embodiment of fault determination module 25.Fault determination module 25 monitors the bit error rate of the first test signal, works as appearance
When the bit error rate exceedes the threshold value being pre-configured with, T_A at the time of record breaks down；Equally, the monitoring of fault determination module 25 first
The bit error rate of test signal, when there is the bit error rate more than the threshold value pre-set, records fault moment T_B.In order to avoid surveying
The influence of random error during examination optical signal transmission, when fault determination module 25 monitors the two-way bit error rate, is preferably monitored continuous
Error bit number, and when continuous error bit number exceedes the threshold value being pre-configured with, at the time of record breaks down, i.e. T_A
And T_B.The fault determination module 25 obtains testing the position of optical fiber trouble point according to T_A and T_B.As shown in figure 3, failure is true
Cover half block includes trouble point determining module 251, Fisrt fault moment determining module 252, the and of the second fault moment determining module 253
Threshold value memory module 254.As a preferred technical scheme of the present embodiment, the storage of threshold value memory module 254 is by configuring
Interface（Fig. 3 is not drawn into）The first error threshold value and the second error threshold value of configuration.Now, Fisrt fault moment determining module 252
The first test signal 271 is received, the bit error rate of first test signal is counted, and miss with error threshold value memory module first
Code threshold value is compared, and when the bit error rate is more than the first error threshold value, determines Fisrt fault moment T_A；According to same principle,
Second error code of the second fault moment determining module 253 in the second test signal 272 and bit error rate threshold memory module 254
Threshold value determines the second fault moment T_B.As the present embodiment another preferred technical scheme, threshold value memory module 254 is deposited
Store up the first optical power threshold and the second optical power threshold.Now, Fisrt fault moment determining module tests the first test signal 271
Amplitude so that determine receive first test optical signal 231 power, when the power be less than the first power threshold when, it is determined that
Fisrt fault moment T_A；According to same principle, the second fault moment determining module 253 is according to the second test signal 272 and
Two power thresholds determine the second fault moment T_B.Described fault determination module 25 is according to Fisrt fault moment and the second failure
Moment, the position according to step 403 localization of faults of flow chart as shown in Figure 4.
With reference to Fig. 4, Fig. 4 is a kind of method flow diagram for monitoring fiber failure provided in an embodiment of the present invention.Methods described
Comprise the following steps：
Step 401, the first test signal is sent from the A ends of optical fiber to be detected to B ends respectively and from the detection fiber
B ends to A ends send the second test signal, wherein, the A ends of the optical fiber to be detected are arranged on the Single port of fibre distribution frame
On, the B ends of the optical fiber to be detected are concatenated into by jumping fiber on the another port of the fibre distribution frame；
Alternatively, methods described also includes：
First test signal is converted into the first test optical signal, the first test optical signal is forwarded to be detected
Optical fiber；
Second test signal is converted into the second test optical signal.
Specifically, with reference to Fig. 2, the test signal generation module 24 produces pre-defined pattern signal, and passes through electricity
Light modular converter 221 and 222 is converted to the first test optical signal and the second test optical signal, the first test optical signal coupling device
201 will be coupled into test optical fiber 1, and the second test optical signal will be coupled into test optical fiber 1 by coupling 202, realize the first survey
Examination optical signal and the second test optical signal simultaneously in two directions on be transmitted, described two directions respectively with first direction or
A to second direction or B to mark.
Specifically, with reference to Fig. 2, the test of test pattern signal first needed for the test signal generation module 24 is produced is believed
Numbers 291 and second test signal 292, first wave length or wavelength are respectively converted into by light electrooptic conversion module 221 and 222 afterwards
A and second wave length or wavelength B test optical signal are testing the first party of optical fiber by coupler 201 and coupler 202 respectively
To or A to second direction or B to transmission.
Step 402, the first test signal for being returned from the A ends of the optical fiber to be detected to B ends is received respectively and from institute
State the second test signal that the B ends of testing fiber are returned to A ends；
First test signal and the second test signal are received respectively specifically, described, including：
By the second coupler, coupler 202 separates and receives the first test optical signal, described first is tested
Optical signal carries out opto-electronic conversion and obtains first test signal；
By the first coupler, coupler 201 separates and receives the second test optical signal, described second is tested
Optical signal carries out opto-electronic conversion and obtains second test signal.
Specifically, with reference to Fig. 2, A is expressed as into wavelength A and wavelength B to the wavelength with B to test optical signal respectively.
Coupler 201 comes out B wavelength the second test light Signal separator, is sent to photoelectric conversion module 211, recovers B to the second test
Signal 272 is simultaneously sent to fault determination module and is determined the second fault moment,.It is identical with the second test light signal processing,
The wavelength A isolated from coupler 202 the first test optical signal recovers the first test signal 271 through photoelectric conversion module 212
And and deliver to fault determination module and determine the second fault moment
Specifically, with reference to Fig. 2 and 3, photoelectric conversion module 211 and 212 is carried by coupler 201 and coupler 202 respectively
Take and change B and test optical signal and the second test optical signal to transmission and A to the first of transmission, fault determination module 25 measures it
Luminous power or the statistics bit error rate.
Alternatively, the wavelength of the first test optical signal is identical with the wavelength of the described second test optical signal, or, institute
The wavelength for stating the wavelength and the described second test optical signal of the first test optical signal is differed.
When the first wave length and the equal second wave length, first coupler 201 and second coupler
202 be wavelength division multiplexer；When the first wave length and the unequal second wave length, first coupler 201 and described
Second coupler 202 is optical branching device or optical circulator.
Specifically, it is different wave length to assume that A tests optical signal and B to test optical signal to the second of transmission to the first of transmission
When, in order to share an optical fiber, and big coupling loss will not be introduced, coupler 201 and coupler 202 use ripple respectively
Two-way test optical signal is tested and is multiplexed on optical fiber by long multiplexing technology at one.Assuming that first test lights of the A to remodeling
Signal and B to the second test optical signal of transmission be phase co-wavelength when, coupler 201 and coupler 202 can be optical branching device
Or optical circulator.
Step 403, when the optical fiber to be detected breaks down, according to the first test signal of the return and described return
The second test signal returned, determines the position of the trouble point of the optical fiber to be detected.
Alternatively, it is described when the optical fiber to be detected breaks down, according to the first test signal of the return and institute
The second test signal of return is stated, the position of the trouble point of the optical fiber to be detected is determined, including：
When the power of the first test signal of the return of the reception is less than predetermined power threshold, when determining Fisrt fault
Carve；
When the power of the second test signal of the return of the reception is less than predetermined power threshold, when determining the second failure
Carve；
According to Fisrt fault moment and the second fault moment, the fault points of optical cables position is determined.
Specifically, with reference to Fig. 5, Fig. 5 is a kind of localization method schematic diagram of position of failure point provided in an embodiment of the present invention.
As shown in figure 5, first tests optical signal in A to transmission, and when optical fiber cable breaks down, for example, occurs fracture or serious
Decay, the amplitude of the first test optical signal can be less than a certain threshold value, so as to cause the first test signal width that opto-electronic conversion is recovered
Degree is also below a certain threshold value, such as corresponding amplitude thresholds of the first power threshold, or the first test signal occur continuing even " 0 " or
The serious error code of person；Equally when optical fiber cable breaks down, the second test signal amplitude is corresponding also below the second power threshold
There is lasting company " 0 " or serious error code in amplitude threshold, or the second test signal.
The data analysis module of fault determination module 24 by respectively according to power whether less than threshold value or the bit error rate whether
Fisrt fault moment T_A and the second fault moment T_B are determined more than threshold value.The A received is recorded to the continuous error bit meter of signal
T_A and the B received count T_B at the time of exceeding threshold value to the continuous error bit of signal at the time of number exceedes threshold value.Failure is determined
Module 24 uses following algorithms to be that can obtain breakpoint to test optical signal receiver, or opto-electronic conversion to the first of transmission from A
The the second test optical signal transmitted apart from L1 and from B of module 212 is to a distance from receiver or photoelectric conversion module 211
L2, so that it is determined that the position of breakpoint or trouble point.
T_A=(L1+kL)*n(λA)/C
T_B=(L2+kL)*n(λB)/C （1）
L1+L2=L
Wherein
T_A --- A is to signal fault moment, i.e. Fisrt fault moment；
T_B --- B is to signal fault moment, i.e. the second fault moment；
L1 --- trouble point from A to or first direction transmission the first test light signal receiver with a distance from；
L2 --- trouble point from B to or second direction transmission second test optical signal receiver with a distance from；
L --- test total length, equipment automatic measurement is obtained or is manually entered during system initialization；
n(λA) --- the refractive index of wavelength A or first wave length correspondence optical fiber；
n(λB) --- the refractive index of wavelength B or second wave length correspondence optical fiber；
C --- the light velocity in vacuum, equal to 299792458m/s；
K --- nonnegative integer.
Solution（1）Equation group can obtain L1 and L2.
Simple in view of realizing, wavelength A and wavelength B distinguish preferred 1310nm and 1550nm, then the first test optical signal and
Second test optical signal corresponding to optical fibre refractivity be respectively
n(λA)=n(1.31)=1.4677
n(λB)=n(1.55)=1.4682675
Both are more or less the same.Therefore, can be by formula when error can receive（2）It is reduced to
Assuming that the present embodiment A to B to use Same Wavelength as first test optical signal and second test optical signal
Wavelength, therefore formula（2）Formula can be reduced to（4）.
Test optical wavelength generally selects 1330nm or 1550nm.No matter which kind of above-mentioned wavelength, its refractive index n (λ) are used
Difference is little, when position error is in range of receiving, formula（3）Still set up.
Alternatively, it is described when the optical fiber to be detected breaks down, according to the first test signal of the return and institute
The second test signal of return is stated, the position of the trouble point of the optical fiber to be detected is determined, including：
When the bit error rate of the first test signal of the return of the reception is more than predetermined bit error rate threshold, the first event is determined
Hinder the moment；
When the bit error rate of the second test signal of the return of the reception is more than predetermined bit error rate threshold, the second event is determined
Hinder the moment；
The fault points of optical cables position is determined according to Fisrt fault moment and the second fault moment.
Specifically, when it is determined that can be using above-mentioned calculating position of failure point when Fisrt fault moment and the second fault moment
Method obtains the position of trouble point.
The embodiment of the present invention provides a kind of method for monitoring fiber failure, and methods described passes through respectively from optical fiber to be detected
A ends send the first test signal to B ends and the second test signal are sent from the B ends of the detection fiber to A ends, wherein, institute
The A ends for stating optical fiber to be detected are arranged on the Single port of fibre distribution frame, and the B ends of the optical fiber to be detected are concatenated into by jumping fiber
On the another port of the fibre distribution frame；The the first test letter returned from the A ends of the optical fiber to be detected to B ends is received respectively
Number and the second test signal for being returned from the B ends of the testing fiber to A ends；When the optical fiber to be detected breaks down,
According to the first test signal of the return and the second test signal of the return, the trouble point of the optical fiber to be detected is determined
Position, so as to realize the optical power monitoring purpose integrated with fault location test, thus reduce monitoring Cable's Fault into
This.
With reference to Fig. 6, Fig. 6 is a kind of equipment structure chart of fiber laser arrays provided in an embodiment of the present invention.As shown in fig. 6, institute
Stating equipment includes：
Sending module 601, for sending the first test signal from the A ends of optical fiber to be detected to B ends respectively and from described
The B ends of detection fiber send the second test signal to A ends, wherein, the A ends of the optical fiber to be detected are arranged on fibre distribution frame
On Single port, the B ends of the optical fiber to be detected are concatenated into by jumping fiber on the another port of the fibre distribution frame；
Specifically, with reference to Fig. 2, the test signal generation module 24 produces pre-defined pattern signal, and passes through electricity
Light modular converter 221 and 222 is converted to the first test optical signal and the second test optical signal, the first test optical signal coupling device
201 will be coupled into test optical fiber 1, and the second test optical signal will be coupled into test optical fiber 1 by coupling 202, realize the first survey
Examination optical signal and the second test optical signal simultaneously in two directions on be transmitted, described two directions respectively with first direction or
A to second direction or B to mark.
Specifically, with reference to Fig. 2, the test of test pattern signal first needed for the test signal generation module 24 is produced is believed
Numbers 291 and second test signal 292, first wave length or wavelength are respectively converted into by light electrooptic conversion module 221 and 222 afterwards
A and second wave length or wavelength B test optical signal are testing the first party of optical fiber by coupler 201 and coupler 202 respectively
To or A to second direction or B to transmission.
Alternatively, the equipment also includes photoelectric conversion module and the first coupler, wherein, the photoelectric conversion module is used
In：
First test signal is converted into the first test optical signal, optical signal is tested by described first by the first coupler
The B ends are coupled to from the A ends；
Second test signal is converted into the second test optical signal, optical signal is tested by described second by the second coupler
The A ends are coupled to from the B ends.
Receiving module 602, for receiving the first test signal returned from the A ends of the optical fiber to be detected to B ends respectively
And the second test signal returned from the B ends of the testing fiber to A ends；
Specifically, the receiving module 602 specifically for：
Separated by the second coupler and receive the first test optical signal, optical signal is tested by the first of the return
Carry out the first test electric signal that opto-electronic conversion obtains the return；
The second test optical signal of the return is separated and received by the first coupler, by the second test of the return
Optical signal carries out opto-electronic conversion and obtains the second test electric signal.
Specifically, with reference to Fig. 2, A is expressed as into wavelength A and wavelength B to the wavelength with B to test optical signal respectively.
Coupler 201 comes out B wavelength the second test light Signal separator, is sent to photoelectric conversion module 211, recovers B to the second test
Signal 272 is simultaneously sent to fault determination module and is determined the second fault moment,.It is identical with the second test light signal processing,
The wavelength A isolated from coupler 202 the first test optical signal recovers the first test signal 271 through photoelectric conversion module 212
And and deliver to fault determination module and determine the second fault moment
Specifically, with reference to Fig. 2 and 3, photoelectric conversion module 211 and 212 is carried by coupler 201 and coupler 202 respectively
Take and change B and test optical signal and the second test optical signal to transmission and A to the first of transmission, fault determination module 25 measures it
Luminous power or the statistics bit error rate.
Alternatively, the wavelength of the first test optical signal is identical with the wavelength of the described second test optical signal, or, institute
The wavelength for stating the wavelength and the described second test optical signal of the first test optical signal is differed.
When the first wave length and the equal second wave length, first coupler 201 and second coupler
202 be wavelength division multiplexer；When the first wave length and the unequal second wave length, first coupler 201 and described
Second coupler 202 is optical branching device or optical circulator.
Specifically, it is different wave length to assume that A tests optical signal and B to test optical signal to the second of transmission to the first of transmission
When, in order to share an optical fiber, and big coupling loss will not be introduced, coupler 201 and coupler 202 use ripple respectively
Two-way test optical signal is tested and is multiplexed on optical fiber by long multiplexing technology at one.Assuming that first test lights of the A to remodeling
Signal and B to the second test optical signal of transmission be phase co-wavelength when, coupler 201 and coupler 202 can be optical branching device
Or optical circulator.
Fault determination module 603, for determining the fault points of optical cables according to Fisrt fault moment and the second fault moment
Position.
Alternatively, the fault determination module 603 specifically for：
When the power of the first test signal of the return of the reception is less than predetermined power threshold, when determining Fisrt fault
Carve；
When the power of the second test signal of the return of the reception is less than predetermined power threshold, when determining the second failure
Carve；
According to Fisrt fault moment and the second fault moment, the fault points of optical cables position is determined.
Specifically, may be referred to Fig. 5 associated description, it will not be repeated here.
When the bit error rate of the first test signal of the return of the reception is more than predetermined bit error rate threshold, the first event is determined
Hinder the moment；
When the bit error rate of the second test signal of the return of the reception is more than predetermined bit error rate threshold, the second event is determined
Hinder the moment；
The fault points of optical cables position is determined according to Fisrt fault moment and the second fault moment.
Specifically, when it is determined that can be using above-mentioned calculating position of failure point when Fisrt fault moment and the second fault moment
Method obtains the position of trouble point.
The embodiment of the present invention provides a kind of equipment of fiber laser arrays, and the equipment passes through respectively from the A ends of optical fiber to be detected
The first test signal is sent to B ends and the second test signal is sent from the B ends of the detection fiber to A ends, wherein, it is described to treat
The A ends of detection fiber are arranged on the Single port of fibre distribution frame, and the B ends of the optical fiber to be detected are concatenated into described by jumping fiber
On the another port of fibre distribution frame；Receive respectively the first test signal for being returned from the A ends of the optical fiber to be detected to B ends with
And the second test signal returned from the B ends of the testing fiber to A ends；When the optical fiber to be detected breaks down, according to
First test signal of the return and the second test signal of the return, determine the position of the trouble point of the optical fiber to be detected
Put, so that the optical power monitoring purpose integrated with fault location test is realized, so as to reduce the cost of monitoring Cable's Fault.
With reference to Fig. 7, Fig. 7 is a kind of system construction drawing of fiber laser arrays provided in an embodiment of the present invention.As shown in fig. 7, institute
State equipment 701 of the system including fiber laser arrays, trunk Optical Distribution Frame ODF702, trunk optical fiber distribution terminal FDT703, the light
The A ends of the equipment of fibre detection are arranged on the Single port of the ODF702, and the B ends of the equipment of the fiber laser arrays are concatenated by jumping fiber
To the another port of the ODF702；The equipment of the fiber laser arrays includes the equipment as described in Fig. 6 and Fig. 6, here just not
Repeat again.
Fig. 8 is a kind of equipment structure chart of fiber laser arrays provided in an embodiment of the present invention.With reference to Fig. 8, Fig. 8 is of the invention real
A kind of equipment 800 of example offer is applied, the specific embodiment of the invention is not limited implementing for the equipment.The equipment
800 include：
Processor (processor) 801, communication interface (Communications Interface) 802, memory
(memory) 803, bus 804.
Processor 801, communication interface 802, memory 803 completes mutual communication by bus 804.
Communication interface 802, for being communicated with other equipment；
Processor 801, for configuration processor.
Specifically, program can include program code, and described program code includes computer-managed instruction.
Processor 801 is probably a central processing unit（Central processing unit, CPU）, or it is specific
Integrated circuit ASIC（Application Specific Integrated Circuit）, or be arranged to implement this hair
One or more integrated circuits of bright embodiment.
Memory 803, for storage program.Memory 803 can be volatile memory（volatile memory）,
Such as random access memory（Random-access memory, RAM）, or nonvolatile memory（non-volatile
memory）, such as read-only storage（Ead-only memory, ROM）, flash memory（flash memory）, hard disk
（Hard disk drive, HDD）Or solid state hard disc（Solid-state drive, SSD）.Processor 801 is according to memory 803
The programmed instruction of storage, performs following methods：
The first test signal is sent from the A ends of optical fiber to be detected to B ends respectively and from the B ends of the detection fiber to A
End sends the second test signal, wherein, the A ends of the optical fiber to be detected are arranged on the Single port of fibre distribution frame, described to treat
The B ends of detection fiber are concatenated into by jumping fiber on the another port of the fibre distribution frame；
The first test signal returned from the A ends of the optical fiber to be detected to B ends is received respectively and treats light-metering from described
The second test signal that fine B ends are returned to A ends；
When the optical fiber to be detected breaks down, according to the second of the first test signal of the return and the return
Test signal, determines the position of the trouble point of the optical fiber to be detected.
It is described when the optical fiber to be detected breaks down, according to the first test signal of the return and the return
Second test signal, determines the position of the trouble point of the optical fiber to be detected, including：
When the power of the first test signal of the return of the reception is less than predetermined power threshold, when determining Fisrt fault
Carve；
When the power of the second test signal of the return of the reception is less than predetermined power threshold, when determining the second failure
Carve；
According to Fisrt fault moment and the second fault moment, the fault points of optical cables position is determined.
It is described when the optical fiber to be detected breaks down, according to the first test signal of the return and the return
Second test signal, determines the position of the trouble point of the optical fiber to be detected, including：
When the bit error rate of the first test signal of the return of the reception is more than predetermined bit error rate threshold, the first event is determined
Hinder the moment；
When the bit error rate of the second test signal of the return of the reception is more than predetermined bit error rate threshold, the second event is determined
Hinder the moment；
The fault points of optical cables position is determined according to Fisrt fault moment and the second fault moment.
Methods described also includes：
First test signal is converted into the first test optical signal, the first test optical signal is forwarded to be detected
Optical fiber；
Second test signal is converted into the second test optical signal.
The wavelength of the first test optical signal is identical with the wavelength of the described second test optical signal, or, described first
The wavelength for testing the wavelength and the described second test optical signal of optical signal is differed.
The embodiment of the present invention provides a kind of equipment for monitoring Cable's Fault, and the equipment passes through respectively from optical fiber to be detected
A ends send the first test signal to B ends and the second test signal are sent from the B ends of the detection fiber to A ends, wherein, institute
The A ends for stating optical fiber to be detected are arranged on the Single port of fibre distribution frame, and the B ends of the optical fiber to be detected are concatenated into by jumping fiber
On the another port of the fibre distribution frame；The the first test letter returned from the A ends of the optical fiber to be detected to B ends is received respectively
Number and the second test signal for being returned from the B ends of the testing fiber to A ends；When the optical fiber to be detected breaks down,
According to the first test signal of the return and the second test signal of the return, the trouble point of the optical fiber to be detected is determined
Position, so as to realize the optical power monitoring purpose integrated with fault location test, thus reduce monitoring Cable's Fault into
This.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto,
Any one skilled in the art the invention discloses technical scope in, the change or replacement that can be readily occurred in,
It should all be included within the scope of the present invention.Therefore, protection scope of the present invention should be with scope of the claims
It is defined.
Claims (12)
1. a kind of method for monitoring fiber failure, it is characterised in that methods described includes：
The first test signal is sent from the A ends of optical fiber to be detected to B ends respectively and is sent out from the B ends of the detection fiber to A ends
The second test signal is sent, wherein, the A ends of the optical fiber to be detected are arranged on the Single port of fibre distribution frame, described to be detected
The B ends of optical fiber are concatenated into by jumping fiber on the another port of the fibre distribution frame；
The first test signal returned from the A ends of the optical fiber to be detected to B ends and the B from the testing fiber are received respectively
The second test signal for holding A ends to return；
When the optical fiber to be detected breaks down, according to the first test signal of the return and the second test of the return
Signal determines Fisrt fault moment and the second fault moment respectively, according to the Fisrt fault moment and second fault moment
Determine the position of the trouble point of the optical fiber to be detected.
2. according to the method described in claim 1, it is characterised in that described when the optical fiber to be detected breaks down, according to
First test signal of the return and the second test signal of the return determine Fisrt fault moment and the second failure respectively
At the moment, the position of the trouble point of the optical fiber to be detected is determined according to the Fisrt fault moment and second fault moment,
Including：
When the power of the first test signal of the return of the reception is less than predetermined power threshold, when determining the Fisrt fault
Carve；
When the power of the second test signal of the return of the reception is less than predetermined power threshold, when determining second failure
Carve；
According to the Fisrt fault moment and second fault moment, the fault points of optical cables position of the optical fiber to be detected is determined
Put.
3. according to the method described in claim 1, it is characterised in that described when the optical fiber to be detected breaks down, according to
First test signal of the return and the second test signal of the return determine Fisrt fault moment and the second failure respectively
At the moment, the position of the trouble point of the optical fiber to be detected is determined according to the Fisrt fault moment and second fault moment,
Including：
When the bit error rate of the first test signal of the return of the reception is more than predetermined bit error rate threshold, first event is determined
Hinder the moment；
When the bit error rate of the second test signal of the return of the reception is more than predetermined bit error rate threshold, second event is determined
Hinder the moment；
The fault points of optical cables position of the optical fiber to be detected is determined according to the Fisrt fault moment and second fault moment.
4. according to the method described in claim 1, it is characterised in that methods described also includes：
First test signal is converted into the first test optical signal, the first test optical signal is forwarded to light-metering to be checked
It is fine；
Second test signal is converted into the second test optical signal.
5. method according to claim 4, it is characterised in that the wavelength of the first test optical signal is surveyed with described second
The wavelength for trying optical signal is identical, or, the wavelength of the first test optical signal tests the wavelength of optical signal not with described second
It is identical.
6. a kind of equipment of fiber laser arrays, it is characterised in that the equipment includes：
Sending module, for sending the first test signal from the A ends of optical fiber to be detected to B ends respectively and from the detection fiber
B ends to A ends send the second test signal, wherein, the A ends of the optical fiber to be detected are arranged on the Single port of fibre distribution frame
On, the B ends of the optical fiber to be detected are concatenated into by jumping fiber on the another port of the fibre distribution frame；
Receiving module, the first test signal returned for receiving respectively from the A ends of the optical fiber to be detected to B ends and from institute
State the second test signal that the B ends of testing fiber are returned to A ends；
Fault determination module, for when the optical fiber to be detected breaks down, according to the first test signal of the return and
Second test signal of the return determines Fisrt fault moment and the second fault moment respectively, according to the Fisrt fault moment
The position of the trouble point of the optical fiber to be detected is determined with second fault moment.
7. equipment according to claim 6, it is characterised in that the fault determination module specifically for：
When the power of the first test signal of the return of the reception is less than predetermined power threshold, when determining the Fisrt fault
Carve；
When the power of the second test signal of the return of the reception is less than predetermined power threshold, when determining second failure
Carve；
According to the Fisrt fault moment and second fault moment, the fault points of optical cables position of the optical fiber to be detected is determined
Put.
8. equipment according to claim 6, it is characterised in that the fault determination module specifically for：
When the bit error rate of the first test signal of the return of the reception is more than predetermined bit error rate threshold, first event is determined
Hinder the moment；
When the bit error rate of the second test signal of the return of the reception is more than predetermined bit error rate threshold, second event is determined
Hinder the moment；
The fault points of optical cables position of the optical fiber to be detected is determined according to the Fisrt fault moment and second fault moment.
9. equipment according to claim 6, it is characterised in that the equipment also includes photoelectric conversion module and the first coupling
Device, wherein, the photoelectric conversion module is used for：
First test signal is converted into the first test optical signal, optical signal is tested from institute by described first by the first coupler
State A ends and be coupled to the B ends；
Second test signal is converted into the second test optical signal, optical signal is tested from institute by described second by the second coupler
State B ends and be coupled to the A ends.
10. equipment according to claim 9, it is characterised in that the receiving module specifically for：
The first test optical signal of return is separated and received by the second coupler, and the first test optical signal of the return is entered
The first test electric signal that row opto-electronic conversion is returned；
The second test optical signal of return is separated and received by the first coupler, and the second test optical signal of the return is entered
The second test electric signal that row opto-electronic conversion is returned.
11. equipment according to claim 9, it is characterised in that
The wavelength of the first test optical signal is identical with the wavelength of the described second test optical signal, or, first test
The wavelength of the wavelength of optical signal and the described second test optical signal is differed.
12. a kind of optic-fiber monitoring system, it is characterised in that the system includes the equipment of fiber laser arrays, trunk Optical Distribution Frame
ODF, trunk optical fiber distribution terminal FDT, the A ends of the equipment of the fiber laser arrays are arranged on the Single port of the ODF, the optical fiber
The B ends of the equipment of detection are concatenated into the another port of the ODF by jumping fiber；The equipment of the fiber laser arrays includes right such as will
Seek the equipment any one of 6-11.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104601232B (en) * | 2013-10-30 | 2017-11-17 | 华为技术有限公司 | Optical cable monitoring system, device and method |
| CN108306681A (en) * | 2015-11-30 | 2018-07-20 | 长城汽车股份有限公司 | A kind of wireless telecommunication system and method |
| CN105846891A (en) * | 2016-03-25 | 2016-08-10 | 江苏骏龙电力科技股份有限公司 | Short-distance optical fiber network fault monitoring method |
| CN107566035A (en) * | 2016-06-30 | 2018-01-09 | 中兴通讯股份有限公司 | Optical fiber connecting detection method, network management server and receiving terminal network element |
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| CN108692746B (en) * | 2017-04-05 | 2022-07-12 | 中兴通讯股份有限公司 | Sensing monitoring terminal, sensing monitoring system and sensing monitoring method |
| CN108667513A (en) * | 2018-04-08 | 2018-10-16 | 四川微迪智控科技有限公司 | A kind of the optical fiber link management system and service life predictor method of the DDM functions based on SFP modules |
| CN111385022B (en) * | 2018-12-29 | 2022-02-25 | 深圳市海思半导体有限公司 | Error code detection method and related equipment |
| CN109995456B (en) * | 2019-02-27 | 2020-07-24 | 中国人民解放军战略支援部队信息工程大学 | Multistage straight-through protection device and method applied to serial connection equipment for SDH transmission |
| CN112311451A (en) * | 2019-07-29 | 2021-02-02 | 中国石油天然气集团有限公司 | Optical device fault detection method and device |
| CN113315572B (en) * | 2021-03-30 | 2023-11-14 | 阿里巴巴新加坡控股有限公司 | Detection method and device for optical module physical link, optical module and optical transmission system |
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