CN109995426A - The long localization method of cable sheath and optical fiber vibration detection system - Google Patents
The long localization method of cable sheath and optical fiber vibration detection system Download PDFInfo
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- CN109995426A CN109995426A CN201910226034.5A CN201910226034A CN109995426A CN 109995426 A CN109995426 A CN 109995426A CN 201910226034 A CN201910226034 A CN 201910226034A CN 109995426 A CN109995426 A CN 109995426A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H9/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means
- G01H9/004—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means using fibre optic sensors
- G01H9/006—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means using fibre optic sensors the vibrations causing a variation in the relative position of the end of a fibre and another element
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
- H04B10/073—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an out-of-service signal
- H04B10/0731—Testing or characterisation of optical devices, e.g. amplifiers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
- H04B10/075—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
- H04B10/077—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using a supervisory or additional signal
- H04B10/0771—Fault location on the transmission path
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Abstract
The application provides a kind of long localization method optical fiber vibration monitoring system of cable sheath.The long localization method of cable sheath is generally laid in both sides of the road using city subterranean cable, this feature of neighbouring optic cable vibration can be caused when vehicle passes through, and obtains the long vibration energy time-domain diagram of the cable sheath.And by analyzing the vibration energy time-domain diagram, optical cable location feature point is selected.It is laid with figure and optical cable laying area map according to Optical Cable, determines the geographical location that each described optical cable location feature point is laid with.To generate the long cable sheath length and geographical location mapping table with the relationship in geographical location of reaction cable sheath.According to cable sheath length and geographical location mapping table, the long corresponding geographical location of the cable sheath can be determined.The long localization method of cable sheath provides data reference in Cable's Fault for route repairing.
Description
Technical field
This application involves communication O&M fields, more particularly to a kind of long localization method of cable sheath and optical fiber vibration monitoring system
System.
Background technique
With the continuous development of mechanics of communication, communication network constantly improves in each city to grow, and each city is gradually
It is covered by complete optical fiber communication network.And at optical cable laying initial stage, it is contemplated that the transformation of later period optical cable is convenient, often online
There are remaining cables at random for certain positions on the road.Certain positions are resulted in there are remaining cable at random does not have detailed light in optical cable laying data
Corresponding relationship between the geographical location cable Pi Changyu.Moreover, some optical cables are in use, and according to actual needs, cable line
Road is even more that can live through multiple cutover, and which results in the long corresponding relationship between geographical location of cable sheath is very indefinite.
However, urban infrastructure construction, the problems such as frequently resulting in fiber optic communications failure.Due to lightguide cable link operation maintenance personnel
Without the long corresponding relationship data between physical location of cable sheath, so Cable's Fault can not be found in time when Cable's Fault
It puts corresponding geographical location and quickly rushes to the scene of the accident and repaired, and be merely able to carry out gradually by daily working experience
Investigation, has seriously affected route first-aid repair efficiency.
When for Cable's Fault, this problem of the corresponding geographical location of fault points of optical cables can not be found in time, how simply,
Quickly sort out the long corresponding relationship data between geographical location of more accurate cable sheath.To break down in optical cable
When can according to cable sheath length be quickly found out the corresponding geographical location in fault point, so that guide line operation maintenance personnel is on the scene in time
The problem of carrying out lightguide cable link repairing, being current each city optical cable operation maintenance personnel urgent need to resolve.
Summary of the invention
Based on this, it is necessary to be asked for the long corresponding relationship between geographical location of cable sheath in traditional technology is indefinite
Topic provides a kind of long localization method optical fiber vibration monitoring system of cable sheath.
A kind of long localization method of cable sheath, comprising:
S10 obtains optical cable vibration signal data, to obtain the vibration signal time domain energy figure of the optical cable；
S20 selects multiple optical cable location feature points according to the vibration signal time domain energy figure；
S30 provides the Optical Cable laying figure and the optical cable laying area map, is spread according to the Optical Cable
If figure and the optical cable laying area map, the geographical location that each described optical cable location feature point is laid with is determined；
S40 is spread according to each described described optical cable location feature point and each described described optical cable location feature point
If geographical location relationship, it is long with geographical location mapping table to generate cable sheath, long with geographical position according to the cable sheath
Mapping table is set, determines the long corresponding geographical location of the cable sheath.
The step of acquisition optical cable vibration signal data includes: in one of the embodiments,
Pulsed optical signals generator and vibration signal demodulator are provided, and the starting point of the optical cable is respectively connected to institute
State the signal output end of pulsed optical signals generator and the signal input part of the vibration signal demodulator；
Using the optical fiber in the optical cable as sensor, the vibration of the optical cable is by the optical fiber caused by earth shock
It senses；
When being propagated in the optical fiber due to the pulsed light of pulsed optical signals generator transmitting, Xiang Rui after constantly generating
Benefit scattering light, the backward Rayleigh scattering light carry the vibration information that the optical fiber senses and are connect by the vibration signal demodulator
It receives, and obtains the optical cable vibration signal data after vibration signal demodulator demodulation.
The S10 in one of the embodiments, obtains optical cable vibration signal data, to obtain the vibration of the optical cable
The step of signal time domain energy figure includes:
The vibration signal intensity of each point on the optical cable inscribed when judging each in the optical cable vibration signal data
Whether vibration signal threshold value is greater than；
If the vibration signal intensity is greater than vibration signal threshold value, at the time of the vibration signal intensity will be recorded corresponding to
And cable sheath is long, at the time of the vibration signal intensity corresponds to and a length of data point of cable sheath；
All data points are obtained, and generate the vibration signal time domain energy figure of the optical cable by the data point.
The step of selecting the optical cable location feature point in one of the embodiments, include:
Judge the vibration source track at measuring point both ends to be checked in the vibration signal time domain energy figure the positive negativity of slope whether
On the contrary；
When the positive negativity of slope of the vibration source track at the measuring point both ends to be checked is opposite, then the measuring point to be checked is described
Optical cable location feature point.
In one of the embodiments, when the positive negativity of slope of the vibration source track at the measuring point both ends to be checked is identical,
Measuring point to be checked is then reselected, reselects whether measuring point to be checked is the optical cable location feature point described in judgement, until described
Optical cable location feature point is all determined.
The corresponding geographical location of the optical cable location feature point is intersection in one of the embodiments,.
The S30 in one of the embodiments, provides the Optical Cable laying figure and the optical cable laying region
Map is laid with figure and the optical cable laying area map according to the Optical Cable, determines that each described optical cable positioning is special
Levying the step of putting the geographical location being laid with includes:
It is laid with and is schemed according to the Optical Cable, determine region and the trend of the optical cable laying；
According to the region of the optical cable laying, the optical cable laying area map is provided；
According to the trend of the optical cable laying, and according to the optical cable laying area map, each described optical cable is determined
The corresponding geographical position range of location feature point.
The S30 in one of the embodiments, provides the Optical Cable laying figure and the optical cable laying region
Map is laid with figure and the optical cable laying area map according to the Optical Cable, determines that each described optical cable positioning is special
Levying the step of putting the geographical location being laid with includes:
According to the corresponding geographical position range of optical cable location feature point described in each, and according to the optical cable laying region
Map determines that an intersection, the intersection are the optical cable location feature in the geographical position range
The geographical location that point is laid with.
The step of generation cable sheath length is with geographical location mapping table in one of the embodiments, further include:
Choose the first optical cable location feature point and the second optical cable location feature point；
It is laid with figure and the optical cable laying area map according to the Optical Cable, it is special to obtain the first optical cable positioning
Corresponding first geographical location of sign point, and obtain corresponding second geographical location of the second optical cable location feature point；
According to the first optical cable location feature point and the second optical cable location feature point, the first difference, and root are obtained
According to first geographical location and second geographical location, the second difference is obtained；
According to the ratio of first difference and second difference, the first proportionality coefficient is obtained；
Between first geographical location and second geographical location, a third geographical location is selected；
The distance between the third geographical location and first geographical location are calculated, third difference is obtained；
According to the product of the third difference and first proportionality coefficient, the third geographical location and described first is obtained
Cable sheath length between geographical location is poor；
The corresponding cable sheath of a length of first optical cable location feature point of the corresponding cable sheath in the third geographical location is long
With the long difference of the cable sheath and；
It is laid with according to each described described optical cable location feature point and each described described optical cable location feature point
The long relationship with the third geographical location of the corresponding cable sheath of the relationship in geographical location and the third geographical location, it is raw
At cable sheath length and geographical location mapping table.
Described the step of obtaining the first proportionality coefficient in one of the embodiments, further include:
The corresponding cable sheath length of the first optical cable location feature point is corresponding with the second optical cable location feature point
The long work of cable sheath is poor, obtains the first difference；
The distance between first geographical location and second geographical location are calculated, the second difference is obtained；
According to the ratio of first difference and second difference, the first proportionality coefficient is obtained.
A kind of optical fiber vibration monitoring system, comprising:
Pulsed optical signals generator, Xiang Suoshu optical cable provide pulsed optical signals；
The starting point of the optical cable is respectively connected to by vibration signal demodulator when detecting the optical cable vibration signal
The signal input part of the signal output end of the pulsed optical signals generator and the vibration signal demodulator, due to the pulse
It is described backward auspicious to Rayleigh scattering light after constantly generating when the pulsed light of optical signal generator transmitting is propagated in the optical fiber
Benefit scattering light carries the vibration information that the optical fiber senses and is received by the vibration signal demodulator, and through the vibration
Optical cable vibration signal data is obtained after demodulator of PM signal PM demodulation；And
Processor is electrically connected with the vibration signal demodulator, for realizing obtaining described in any one of above-described embodiment
Optical cable vibration signal data is taken, the step of to obtain the vibration signal time domain energy figure of the optical cable.
In one of the embodiments, further include:
Circulator has first end and third end；
The first end is connect with the pulsed optical signals generator, and the third end and the vibration signal demodulator connect
It connects.
A kind of computer equipment can be run on a memory and on a processor including memory, processor and storage
Computer program, the processor realize the step of any one of above-described embodiment the method when executing the computer program
Suddenly.
A kind of computer readable storage medium, is stored thereon with computer program, and the computer program is held by processor
The step of any one of above-described embodiment the method is realized when row.
The application provides a kind of long localization method optical fiber vibration monitoring system of cable sheath.The long localization method benefit of cable sheath
It is generally laid in both sides of the road with city subterranean cable, this feature of neighbouring optic cable vibration can be caused when vehicle passes through, obtained
The long vibration energy time-domain diagram of the cable sheath.And by analyzing the vibration energy time-domain diagram, optical cable location feature point is selected.
It is laid with figure and optical cable laying area map according to Optical Cable, determines the geography that each described optical cable location feature point is laid with
Position.To generate the long cable sheath length and geographical location mapping table with the relationship in geographical location of reaction cable sheath.According to
The cable sheath length and geographical location mapping table, can determine the long corresponding geographical location of the cable sheath.The optical cable
The long localization method of skin provides data reference in Cable's Fault for route repairing.
Detailed description of the invention
Fig. 1 is the long localization method flow chart of cable sheath that the application one embodiment provides；
Fig. 2 is the optical cable vibration signal time domain energy figure that the application one embodiment provides；
Fig. 3 is the long positioning principle schematic diagram of cable sheath that the application one embodiment provides；
Fig. 4 is a kind of optical fiber vibration monitoring system structure diagram that the application one embodiment provides；
Fig. 5 is a kind of optical fiber vibration monitoring system structure diagram that the application one embodiment provides.
Main element drawing reference numeral explanation
Optical fiber vibration monitors system 100
Pulsed optical signals generator 10
Laser generating device 11
Modulation element 12
Pulse generation element 13
Driving element 14
Erbium-doped fiber amplifier element 15
Vibration signal demodulator 20
Detecting element 21
Acquisition elements 22
Circulator 30
First end 31
Second end 32
Third end 33
Processor 40
Specific embodiment
In order to make the above objects, features, and advantages of the present application more apparent, with reference to the accompanying drawing to the application
Specific embodiment be described in detail.Many details are explained in the following description in order to fully understand this Shen
Please.But the application can be implemented with being much different from other way described herein, those skilled in the art can be not
Similar improvement is done in the case where violating the application intension, therefore the application is not limited by following public specific implementation.
It should be noted that it can directly on the other element when element is referred to as " being set to " another element
Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it, which can be, is directly connected to
To another element or it may be simultaneously present centering elements.
Unless otherwise defined, all technical and scientific terms used herein and the technical field for belonging to the application
The normally understood meaning of technical staff is identical.The term used in the description of the present application is intended merely to description tool herein
The purpose of the embodiment of body, it is not intended that in limitation the application.Term " and or " used herein includes one or more phases
Any and all combinations of the listed item of pass.
Referring to Figure 1, the application one embodiment provides a kind of long localization method of cable sheath.The long positioning side of the cable sheath
Method includes:
S10 obtains optical cable vibration signal data, to obtain the vibration signal time domain energy figure of the optical cable.Step S10
In, the optical cable vibration signal data includes that vibration signal intensity on each skin factory anchor point on the optical cable and institute are right
Moment occurs for the vibration answered.The vibration signal time domain energy figure is an X-Y scheme.The vibration signal time domain energy figure
Abscissa is that cable sheath is long.The ordinate of the vibration signal time domain energy figure is the vibration time.
S20 selects multiple optical cable location feature points according to the vibration signal time domain energy figure.It is each in step S20
The corresponding geographical location of a optical cable location feature point is intersection.The step of selecting the optical cable location feature point can
Think judge whether the positive negativity of slope of the vibration source track at measuring point both ends to be checked in the vibration signal time domain energy figure is opposite.
When the positive negativity of slope of the vibration source track at the measuring point both ends to be checked is opposite, then the measuring point to be checked is optical cable positioning
Characteristic point.When the positive negativity of slope of the vibration source track at the measuring point both ends to be checked is identical, then measuring point to be checked is reselected, is sentenced
Reselect whether measuring point to be checked is the optical cable location feature point described in disconnected, until the optical cable location feature point is by all true
It is fixed.
S30 provides the Optical Cable laying figure and the optical cable laying area map, is spread according to the Optical Cable
If figure and the optical cable laying area map, the geographical location that each described optical cable location feature point is laid with is determined.Step
In S30, the region and the optical cable laying to be measured for scheming available optical cable laying to be measured are laid with according to the Optical Cable
Trend.According to the available optical cable laying region street Zhong Meitiao to be measured of the optical cable laying area map turn to it is each
The distance between a laying point.
S40 is spread according to each described described optical cable location feature point and each described described optical cable location feature point
If geographical location relationship, it is long with geographical location mapping table to generate cable sheath, long with geographical position according to the cable sheath
Mapping table is set, determines the long corresponding geographical location of the cable sheath.In step S40, the cable sheath length and geographical location
Cable sheath length and the corresponding geographical location of optical cable anchor point in mapping table including each optical cable anchor point.
In the present embodiment, the long localization method of cable sheath is generally laid in both sides of the road using city subterranean cable, vehicle
It can cause this feature of neighbouring optic cable vibration when passing through, obtain the long vibration energy time-domain diagram of the cable sheath.And pass through
The vibration energy time-domain diagram is analyzed, optical cable location feature point is selected.Figure and optical cable laying region are laid with according to Optical Cable
Map determines the geographical location that each described optical cable location feature point is laid with.To generate reaction cable sheath length and geographical position
Cable sheath length and the geographical location mapping table for the relationship set.It is long with geographical location mapping table according to the cable sheath,
It can determine the long corresponding geographical location of the cable sheath.According to the long localization method of the cable sheath can solve cable sheath it is long with
Corresponding relationship unstructured problem between geographical location.The long localization method of cable sheath is mentioned in Cable's Fault for route repairing
For data reference.
The step of acquisition optical cable vibration signal data includes: in one of the embodiments,
Pulsed optical signals generator 10 and vibration signal demodulator 20 are provided.And the starting point of the optical cable is separately connected
To the signal output end of the pulsed optical signals generator 10 and the signal input part of the vibration signal demodulator 20.Using institute
The optical fiber in optical cable is stated as sensor, the vibration of the optical cable caused by earth shock is sensed by the optical fiber.The arteries and veins
When the pulsed light that pulsed light signal generator 10 emits is propagated in the optical fiber, to Rayleigh scattering light after constantly generating.After described
It carries the vibration information that the optical fiber senses to Rayleigh scattering light to be received by the vibration signal demodulator 20, and through institute
It states after vibration signal demodulator 20 demodulates and obtains the optical cable vibration signal data.
The wavelength of the pulsed light can be the pulsed optical signals of 1550nm.The pulsed light is in the optical fiber of the optical cable
It, can be due to fiber core refractive index inhomogeneity, to Rayleigh scattering light after continuous generation during portion's forward-propagating.By
In modulation of the Rayleigh beacon light that optical fiber different location generates by the position extraneous vibration signal, phase signal is carried
The information of external vibration signal.By the time difference between light pulse emission time and the Rayleigh beacon light received,
Disturbance point can be calculated the distance between to apparatus optical fiber outlet, therefore it can be by dividing to Rayleigh scattering signal rear
Analysis, knows the Vibration Condition along optical fiber at different location.
In the present embodiment, using fiber core refractive index inhomogeneity, to Rayleigh scattering light after can constantly generating
Characteristic, pass through the available optical cable vibration letter of the pulsed optical signals generator 10 and the vibration signal demodulator 20
Number.
The S10 in one of the embodiments, obtains optical cable vibration signal data, to obtain the vibration of the optical cable
The step of signal time domain energy figure includes:
The vibration signal intensity of each point on the optical cable inscribed when judging each in the optical cable vibration signal data
Whether vibration signal threshold value is greater than.If the vibration signal intensity is greater than vibration signal threshold value, the vibration signal will be recorded
At the time of intensity corresponds to and cable sheath is long, at the time of the vibration signal intensity corresponds to and a length of data point of cable sheath.
All data points are obtained, and generate the vibration signal time domain energy figure of the optical cable by the data point.The vibration
Signal threshold value can be set according to actual needs.
In the present embodiment, the long localization method of cable sheath by handling the optical cable vibration signal data, into
And cable sheath corresponding to the available biggish signal of shockproofness is long and the moment occurs for vibration.
The S30 in one of the embodiments, provides the Optical Cable laying figure and the optical cable laying region
Map is laid with figure and the optical cable laying area map according to the Optical Cable, determines that each described optical cable positioning is special
Levying the step of putting the geographical location being laid with includes:
It is laid with and is schemed according to the Optical Cable, determine region and the trend of the optical cable laying.It is spread according to the optical cable
If region, the optical cable laying area map is provided.According to the trend of the optical cable laying, and according to the optical cable laying area
Domain map determines the corresponding geographical position range of each described optical cable location feature point.Such as a length of 300 meters of the light of cable sheath
Geographical location where cable anchor point can be 300 meters away from the optical cable starting point or so of one place.According to each institute
The corresponding geographical position range of optical cable location feature point is stated, and according to the optical cable laying area map, in the geographical location
Determine that an intersection, the intersection are the geographical location that the optical cable location feature point is laid in range.Please
Referring to figs. 2 and 3, geographical location corresponding to the turning point between L1 and L2 is the intersection in Fig. 3 between road 1 and road 2
Mouthful.
In the present embodiment, the long localization method of cable sheath, which is utilized, is laid with figure and the optical cable laying to the Optical Cable
The analysis of area map can determine the corresponding geographical position range of each described optical cable location feature point.
The step of generation cable sheath length is with geographical location mapping table in one of the embodiments, further include:
Choose the first optical cable location feature point and the second optical cable location feature point.According to the Optical Cable be laid with figure and
The optical cable laying area map obtains corresponding first geographical location of the first optical cable location feature point, and described in acquisition
Corresponding second geographical location of second optical cable location feature point.According to the first optical cable location feature point and second optical cable
Location feature point, obtains the first difference.And according to first geographical location and second geographical location, it is poor to obtain second
Value.According to the ratio of first difference and second difference, the first proportionality coefficient is obtained.
Between first geographical location and second geographical location, a third geographical location is selected.Calculate institute
The distance between third geographical location and first geographical location are stated, third difference is obtained.According to the third difference and institute
The product for stating the first proportionality coefficient, the cable sheath length obtained between the third geographical location and first geographical location are poor.Institute
State a length of corresponding cable sheath length of first optical cable location feature point of the corresponding cable sheath in third geographical location and the optical cable
The sum of the long difference of skin.It is laid with according to each described described optical cable location feature point and each described described optical cable location feature point
Geographical location the long relationship with the third geographical location of the corresponding cable sheath of relationship and the third geographical location,
Generate cable sheath length and geographical location mapping table.
It is appreciated that in an alternative embodiment, described the step of obtaining the first proportionality coefficient can be will be described
The long work of the long cable sheath corresponding with the second optical cable location feature point of the corresponding cable sheath of first optical cable location feature point is poor, obtains
To the first difference.The distance between first geographical location and second geographical location are calculated, the second difference is obtained.According to
The ratio of first difference and second difference, obtains the first proportionality coefficient.
In the present embodiment, the long localization method of cable sheath by the method for difference obtain more optical cable anchor points and with
The relationship in its corresponding geographical location, and then can more accurately solve the long corresponding relationship between geographical location of cable sheath not
Specify problem.The long localization method of cable sheath provides data reference in Cable's Fault for route repairing.
Fig. 4 is referred to, the application one embodiment provides a kind of optical fiber vibration monitoring system 100.The optical fiber vibration prison
Examining system 100 includes pulsed optical signals generator 10, vibration signal demodulator 20 and processor 40.
The pulsed optical signals generator 10 is used to provide pulsed optical signals to the optical cable.When the detection optical cable vibration
When signal, by the starting point of the optical cable be respectively connected to the pulsed optical signals generator 10 signal output end and the shake
The signal input part of dynamic demodulator of PM signal PM 20.The pulsed light of the pulsed optical signals generator transmitting is propagated in the optical fiber
When, to Rayleigh scattering light after constantly generating.The backward Rayleigh scattering light carries vibration information that the optical fiber senses by institute
It states vibration signal demodulator 20 to receive, and obtains optical cable vibration signal number after the vibration signal demodulator 20 demodulation
According to.The processor 40 is electrically connected with the vibration signal demodulator 20.The processor 40 is for realizing in above-described embodiment
Described in any item acquisition optical cable vibration signal datas, the step of to obtain the vibration signal time domain energy figure of the optical cable.
There is judgment module and memory module in the processor 40.The memory module can store the vibration signal
Threshold value.The vibration of each point on the optical cable that the judgment module is inscribed when judging each in the optical cable vibration signal data
Whether signal strength is greater than vibration signal threshold value.It, will be described in record if the vibration signal intensity is greater than vibration signal threshold value
At the time of vibration signal intensity corresponds to and cable sheath is long, at the time of the vibration signal intensity corresponds to and cable sheath a length of one
Data point.The processor 40 obtains all data points, and the vibration signal of the optical cable is generated by the data point
Time domain energy figure.The vibration signal threshold value can be set according to actual needs.System is monitored by the optical fiber vibration
100 may be implemented the long localization method of the cable sheath.
Fig. 5 is referred to, the optical fiber vibration monitoring system 100 further includes circulator 30 in one of the embodiments,.
The circulator 30 has first end 31, second end 32 and third end 33.The first end 31 and the pulse
Optical signal generator 10 connects.The third end 33 is connect with the vibration signal demodulator 20.The pulsed optical signals occur
Device 10 includes laser generating device 11, modulation element 12, pulse generation element 13, driving element 14 and Erbium-doped fiber amplifier element
15.The laser generating device 11, the modulation element 12 and the Erbium-doped fiber amplifier element 15 are sequentially connected electrically.The drive
Dynamic element 14 is electrically connected between the pulse generation element 13 and the modulation element 12.The vibration signal demodulator 20 wraps
Include detecting element 21 and acquisition elements 22.The detecting element 21 is electrically connected with the third end 33.The acquisition elements 22 with
The processor 40 is electrically connected.
When detecting the optical cable vibration signal, the second end 32 is electrically connected with the optical cable starting point.The laser
Generating device 11 can produce the continuous light that is concerned with by force of 1550nm.The pulse generation element 13 generates pulse control signal.Institute
It states pulse control signal and the modulation element 12 is controlled by the driving element 14.The continuous light passes through the modulation element
12 modulation forms pulsed optical signals.The modulation element 12 can be acousto-optic modulator (AOM).Through the modulation element 12
Modulated pulsed optical signals obtain the amplified pulsed light of peak power after the Erbium-doped fiber amplifier element 15.Then
The pulsed light is injected into the optical fiber in the optical cable by the second end 32 of the circulator 30.When being propagated in the optical fiber,
To Rayleigh scattering light after constantly generating.The backward Rayleigh scattering light carries vibration information that the optical fiber senses finally again
Enter the optical detection device 21 by the circulator 30, and acquires the optical cable vibration signal through the acquisition elements 22
Data.The processor 40 obtains all data points, and when generating the vibration signal of the optical cable by the data point
Domain energy diagram.
In the present embodiment, control institute may be implemented by the cooperation of the pulse generation element 13 and the driving element 14
It is pulsed optical signals that modulation element 12, which is stated, by the continuous light modulation that is concerned with.The pulsed optical signals are propagated in the optical fiber
When, continual it can generate the backward Rayleigh scattering light.The backward Rayleigh scattering light carries what the optical fiber sensed
Vibration information can be received finally by the processor 40, to realize the long localization method of the cable sheath.
A kind of computer readable storage medium is also provided in the application one embodiment, is stored thereon with computer program,
The computer program realizes the step of cable sheath long localization method when being executed by processor.
Those of ordinary skill in the art will appreciate that realizing the whole in the long localization method of above-described embodiment cable sheath or portion
Split flow is relevant hardware can be instructed to complete by computer program, and the computer program can be stored in one
In non-volatile computer read/write memory medium, the computer program is when being executed, it may include such as the implementation of above-mentioned each method
The process of example.Wherein, to memory, storage, database or other media used in each embodiment provided herein
Any reference, may each comprise non-volatile and/or volatile memory.Nonvolatile memory may include read-only memory
(ROM), programming ROM (PROM), electrically programmable ROM (EPROM), electrically erasable ROM (EEPROM) or flash memory.It is volatile
Property memory may include random access memory (RAM) or external cache.By way of illustration and not limitation, RAM
It is available in many forms, such as static state RAM (SRAM), dynamic ram (DRAM), synchronous dram (SDRAM), double data rate sdram
(DDRSDRAM), enhanced SDRAM (ESDRAM), synchronization link (Synchlink) DRAM (SLDRAM), memory bus
(Rambus) direct RAM (RDRAM), direct memory bus dynamic ram (DRDRAM) and memory bus dynamic ram
(RDRAM) etc..
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
The several embodiments of the application above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
The limitation to claim therefore cannot be interpreted as.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the concept of this application, various modifications and improvements can be made, these belong to the protection of the application
Range.Therefore, the scope of protection shall be subject to the appended claims for the application patent.
Claims (14)
1. a kind of long localization method of cable sheath characterized by comprising
S10 obtains optical cable vibration signal data, to obtain the vibration signal time domain energy figure of the optical cable；
S20 selects multiple optical cable location feature points according to the vibration signal time domain energy figure；
S30 provides Optical Cable laying figure and optical cable laying area map, is schemed according to Optical Cable laying and described
Optical cable laying area map determines the geographical location that each described optical cable location feature point is laid with；
S40 is laid with according to each described described optical cable location feature point and each described described optical cable location feature point
The relationship in geographical location generates cable sheath length and geographical location mapping table, according to cable sheath length and geographical location pair
Relation table is answered, determines the long corresponding geographical location of the cable sheath.
2. the long localization method of cable sheath according to claim 1, which is characterized in that the acquisition optical cable vibration signal data
The step of include:
Pulsed optical signals generator (10) and vibration signal demodulator (20) are provided, and the starting point of the optical cable is separately connected
To the signal output end of the pulsed optical signals generator (10) and the signal input part of the vibration signal demodulator (20)；
Using the optical fiber in the optical cable as sensor, the vibration of the optical cable caused by earth shock is sensed by the optical fiber
It arrives；
When being propagated in the optical fiber due to the pulsed light of the pulsed optical signals generator (10) transmitting, Xiang Rui after constantly generating
Benefit scattering light, the backward Rayleigh scattering light carry vibration information that the optical fiber senses by the vibration signal demodulator
(20) it receives, and obtains the optical cable vibration signal data after the vibration signal demodulator (20) demodulation.
3. the long localization method of cable sheath according to claim 2, which is characterized in that the S10 obtains optical cable vibration signal
Data, to include: the step of obtaining the vibration signal time domain energy figure of the optical cable
Whether the vibration signal intensity of each point on the optical cable inscribed when judging each in the optical cable vibration signal data
Greater than vibration signal threshold value；
If the vibration signal intensity is greater than vibration signal threshold value, will record at the time of the vibration signal intensity corresponds to and
Cable sheath is long, at the time of the vibration signal intensity corresponds to and a length of data point of cable sheath；
All data points are obtained, and generate the vibration signal time domain energy figure of the optical cable by the data point.
4. the long localization method of cable sheath according to claim 1, which is characterized in that select the optical cable location feature point
Step includes:
Judge whether the positive negativity of slope of the vibration source track at measuring point both ends to be checked in the vibration signal time domain energy figure is opposite；
When the positive negativity of slope of the vibration source track at the measuring point both ends to be checked is opposite, then the measuring point to be checked is the optical cable
Location feature point.
5. the long localization method of cable sheath according to claim 4, which is characterized in that when the vibration at the measuring point both ends to be checked
When the positive negativity of the slope of source track is identical, then measuring point to be checked is reselected, reselects whether measuring point to be checked is institute described in judgement
Optical cable location feature point is stated, until the optical cable location feature point is all determined.
6. the long localization method of cable sheath according to claim 4, which is characterized in that the optical cable location feature point is corresponding
Geographical location is intersection.
7. the long localization method of cable sheath according to claim 1, which is characterized in that the S30 provides Optical Cable laying
Figure and optical cable laying area map are laid with figure and the optical cable laying area map according to the Optical Cable, determine every
The step of geographical location that one optical cable location feature point is laid with includes:
It is laid with and is schemed according to the Optical Cable, determine region and the trend of the optical cable laying；
According to the region of the optical cable laying, the optical cable laying area map is provided；
According to the trend of the optical cable laying, and according to the optical cable laying area map, each described optical cable positioning is determined
The corresponding geographical position range of characteristic point.
8. the long localization method of cable sheath according to claim 7, which is characterized in that the S30 provides Optical Cable laying
Figure and optical cable laying area map are laid with figure and the optical cable laying area map according to the Optical Cable, determine every
The step of geographical location that one optical cable location feature point is laid with includes:
According to the corresponding geographical position range of optical cable location feature point described in each, and according to the optical cable laying region
Figure determines that an intersection, the intersection are the optical cable location feature point in the geographical position range
The geographical location of laying.
9. the long localization method of cable sheath according to claim 1, which is characterized in that the generation cable sheath length and geographical position
The step of setting mapping table further include:
Choose the first optical cable location feature point and the second optical cable location feature point；
It is laid with figure and the optical cable laying area map according to the Optical Cable, obtains the first optical cable location feature point
Corresponding first geographical location, and obtain corresponding second geographical location of the second optical cable location feature point；
According to the first optical cable location feature point and the second optical cable location feature point, the first difference is obtained, and according to institute
The first geographical location and second geographical location are stated, the second difference is obtained；
According to the ratio of first difference and second difference, the first proportionality coefficient is obtained；
Between first geographical location and second geographical location, a third geographical location is selected；
The distance between the third geographical location and first geographical location are calculated, third difference is obtained；
According to the product of the third difference and first proportionality coefficient, the third geographical location and first geography are obtained
Cable sheath length between position is poor；
The corresponding cable sheath of a length of first optical cable location feature point of the corresponding cable sheath in the third geographical location is long and institute
State the sum of the long difference of cable sheath；
The geography being laid with according to each described described optical cable location feature point and each described described optical cable location feature point
The long relationship with the third geographical location of the corresponding cable sheath of the relationship of position and the third geographical location, generates light
The geographical location cable Pi Changyu mapping table.
10. the long localization method of cable sheath according to claim 9, which is characterized in that first proportionality coefficient that obtains
Step further include:
By the long optical cable corresponding with the second optical cable location feature point of the corresponding cable sheath of the first optical cable location feature point
The long work of skin is poor, obtains the first difference；
The distance between first geographical location and second geographical location are calculated, the second difference is obtained；
According to the ratio of first difference and second difference, the first proportionality coefficient is obtained.
11. a kind of optical fiber vibration monitors system (100) characterized by comprising
Pulsed optical signals generator (10), Xiang Suoshu optical cable provide pulsed optical signals；
The starting point of the optical cable is respectively connected to by vibration signal demodulator (20) when detecting the optical cable vibration signal
The signal input part of the signal output end of the pulsed optical signals generator and the vibration signal demodulator, due to the pulse
When the pulsed light of optical signal generator (10) transmitting is propagated in the optical fiber, to Rayleigh scattering light after constantly generating, after described
The vibration information that the optical fiber senses is carried to Rayleigh scattering light to be received by the vibration signal demodulator (20), and is passed through
Optical cable vibration signal data is obtained after vibration signal demodulator (20) demodulation；And
Processor (50) is electrically connected, for realizing described in claim any one of 1-10 with the vibration signal demodulator (20)
Acquisition optical cable vibration signal data, the step of to obtain the vibration signal time domain energy figure of the optical cable.
12. optical fiber vibration according to claim 11 monitors system (100), which is characterized in that further include:
Circulator (30) has first end (31) and third end (33)；
The first end (31) connect with the pulsed optical signals generator (10), the third end (33) and the vibration signal
Demodulator (20) connection.
13. a kind of computer equipment including memory, processor and stores the meter that can be run on a memory and on a processor
Calculation machine program, which is characterized in that the processor realizes any one of claims 1 to 10 institute when executing the computer program
The step of stating method.
14. a kind of computer readable storage medium, is stored thereon with computer program, which is characterized in that the computer program
The step of any one of claims 1 to 10 the method is realized when being executed by processor.
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