CN108680192A - Distributed optical fiber sensing system geographical location modification method, system and storage medium - Google Patents
Distributed optical fiber sensing system geographical location modification method, system and storage medium Download PDFInfo
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- CN108680192A CN108680192A CN201810268228.7A CN201810268228A CN108680192A CN 108680192 A CN108680192 A CN 108680192A CN 201810268228 A CN201810268228 A CN 201810268228A CN 108680192 A CN108680192 A CN 108680192A
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- 239000013307 optical fiber Substances 0.000 title claims abstract description 42
- 238000002715 modification method Methods 0.000 title claims abstract description 21
- 238000012544 monitoring process Methods 0.000 claims abstract description 31
- 238000000034 method Methods 0.000 claims abstract description 14
- 230000003287 optical effect Effects 0.000 claims description 22
- 238000005070 sampling Methods 0.000 claims description 22
- 235000007164 Oryza sativa Nutrition 0.000 claims description 6
- 235000009566 rice Nutrition 0.000 claims description 6
- 240000007594 Oryza sativa Species 0.000 claims 1
- 238000012545 processing Methods 0.000 abstract description 3
- 239000002609 medium Substances 0.000 description 6
- 241000209094 Oryza Species 0.000 description 5
- 238000004891 communication Methods 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000006399 behavior Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000012120 mounting media Substances 0.000 description 1
- 238000000253 optical time-domain reflectometry Methods 0.000 description 1
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- 239000004065 semiconductor Substances 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
- G01D5/268—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light using optical fibres
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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
Abstract
The invention discloses a kind of distributed optical fiber sensing system geographical location modification methods, system and storage medium, wherein, this method includes the geographical space distance of determining system sensing optic cable overall length and monitoring object, according to the geographical environment of monitoring object and monitoring requirements setting alarm subregion, determine the sensing optic cable position and geographical location of each alarm subregion starting point, calculate the corresponding sensing optic cable length of each alarm sectional and geographical space distance, and it is stored as corrected parameter, after alert event occurs, determine the alarm subregion residing for alarm point, calculating is modified to alarm point geographical location further according to the alarm subregion corrected parameter, help is provided for responding agencies processing.
Description
Technical field
The invention belongs to Distributed Optical Fiber Sensing Techniques fields, specifically, with being related to a kind of distributed optical fiber sensing system
Manage position correcting method.
Background technology
Distributed optical fiber sensing system monitors the physical quantitys such as vibration, temperature along sensing optic cable based on OTDR principles
Variation, optical cable changes along environment such as linearly coupled, temperature can lead to the change of corresponding position optical cable refractive index, and influence backward
Scattered light intensity, the time point by monitoring scattered light intensity variation can calculate its location information, realize along to sensing optic cable
The monitoring and positioning of the disturbance events such as vibration, temperature change, can be widely applied to the security protection of communication cable, long-distance transport pipes,
Early warning is carried out to events such as damage from third-party behavior, leakages.
The alert locations that existing similar distributed optical fiber sensing system is monitored are actually for corresponding position sensing optic cable
Length, and the sensing optic cable used in site of deployment is formed by a disk disk optical cable welding, and a disk cable length ordinarily is about 800
Meter, the needs in each fusing operation in view of being repaired during use in the future, it will usually reserved tens meters of optical cable redundancy, because
There is uncertain error in the geographical location that the positioning result of the event of alarm occurs with event for this sensor-based system, influences emergent dimension
Repair treatment effeciency of the unit to intrusion event.
Invention content
The technical problem to be solved by the present invention is to：A kind of distributing optical fiber sensing is overcome the deficiencies of the prior art and provide
Systematic geography position correcting method, system and storage medium can correct report in distributed optical fiber sensing system operational process
Uncertain error between alert event sensing optic cable and actual geographic position, it is accurately fixed to alert event actual geographic position
Position, help is provided for emergency maintenance.
The technical scheme is that：According to an aspect of the invention, there is provided a kind of distributed optical fiber sensing system
Geographical location modification method the described method comprises the following steps：
Step S100：Determine the geographical space distance of system sensing optical cable overall length and monitoring object；
Step S200：Setting alarm subregion is required according to the geographical environment of monitoring object and safety monitoring；
Step S300：Determine the sensing optic cable position and geographical location of each alarm subregion starting point；
Step S400：The corresponding sensing optic cable length of each alarm sectional and geographical space distance are calculated, is joined as correcting
Number is stored；
Step S500：After alert event occurs, the alarm subregion residing for alarm point is determined, repaiied further according to the alarm subregion
Positive parameter is modified calculating to alarm point geographical location.
In above-mentioned distributed optical fiber sensing system geographical location modification method, in step s 200, subregion of alarming is set
Set the ambient noise conditions and detection requirement for needing to consider the passed through different zones of monitoring object.
In above-mentioned distributed optical fiber sensing system geographical location modification method, in step S300, each subregion of alarming rises
The sensing optic cable position of initial point can be determined by distributed optical fiber vibration sensor calibration or optical cable rice mark.
In above-mentioned distributed optical fiber sensing system geographical location modification method, in step S400, sectional of respectively alarming
Corresponding sensing optic cable length makes the difference calculating using the sensing optic cable position of each alarm sectional starting point, and geographical empty with subregion
Between distance stored collectively as corrected parameter.
Above-mentioned distributed optical fiber sensing system geographical location modification method, in step S500, to alarm point geography position
The formula for setting corrected Calculation is as follows：
Wherein, P is alarm point geographical location after correcting, and A is alarm point in the alarm district location, and L is the alarm subregion
Sensing optic cable length, M are the alarm subregion geographical space distance.
Above-mentioned distributed optical fiber sensing system geographical location modification method, alarm subregion geographical space distance utilize alarm
Point serial number is multiplied by the acquisition of system space sampling interval.
In above-mentioned distributed optical fiber sensing system geographical location modification method, system space sampling interval calculation formula is such as
Under：
Wherein, N is the system space sampling interval, and C is the light velocity, and n is optical cable refractive index, and Fs is system sampling frequency.
In above-mentioned distributed optical fiber sensing system geographical location modification method, predetermined system sample frequency is 100MHz,
Then the system space sampling interval is calculated as 1 meter.
According to another aspect of the present invention, a kind of distributed optical fiber sensing system geographical location amendment system is additionally provided
System, including：First module, the geographical space distance for determining system sensing optical cable overall length and monitoring object；Second module is used
According to the geographical environment of monitoring object and safety monitoring require that subregion of alarming is arranged；Third module, for determining each alarm point
The sensing optic cable position of area's starting point and geographical location；4th module, for calculating the corresponding sensing optic cable of each alarm sectional
Length and geographical space distance, are stored as corrected parameter；5th module, for after alert event occurs, determining report
The residing alarm subregion of alert point, calculating is modified further according to the alarm subregion corrected parameter to alarm point geographical location.
In above-mentioned distributed optical fiber sensing system geographical location update the system, in step S500, to alarm point geography
The formula that position correction calculates is as follows：
Wherein, P is alarm point geographical location after correcting, and A is alarm point in the alarm district location, and L is the alarm subregion
Sensing optic cable length, M are the alarm subregion geographical space distance.
According to a further aspect of the invention, one or more machine readable medias are additionally provided, instruction is stored thereon with,
When executed by one or more processors so that equipment executes the side such as one or more of one aspect of the present invention
Method.
The advantages of the present invention over the prior art are that：
(1) invention can compensate the cable length error of the generation in optical cable laying, welding construction, and utilize light
The modes such as domain reflectometer, optical cable rice mark are to the cable length of alarm subregion starting point or significant geographical location point into rower
It is fixed, the practicability of system is improved, providing accurate geographical location to alert event illustrates；
(2) present invention provides sensing optic cable function corresponding with actual geographic position for distributed optical fiber sensing system,
When alert event occurs, system can be by alarm point optical cable position and subregion arrange parameter, to alarm point actual geographic position
It is modified, accurate geographical location is provided convenient for processing for responding agencies.
Description of the drawings
By reading the detailed description of hereafter preferred embodiment, various other advantages and benefit are common for this field
Technical staff will become clear.Attached drawing only for the purpose of illustrating preferred embodiments, and is not considered as to the present invention
Limitation.In the accompanying drawings：
Fig. 1 is the flow chart of distributed optical fiber sensing system geographical location provided in an embodiment of the present invention modification method；
Fig. 2 is that the present invention is applied to distributed optical fiber sensing system alert event point geographical schematic；
Fig. 3 is the block diagram for showing the computing device that can be used to put into practice embodiments of the present invention.
Specific implementation mode
The illustrative examples of the disclosure are more fully described below with reference to accompanying drawings, although showing the disclosure in attached drawing
Exemplary embodiment, it being understood, however, that may be realized in various forms the disclosure without should be by embodiments set forth here institute
Limitation.On the contrary, it is to understand the disclosure in order to be best understood to provide these embodiments, and it can be by the scope of the present disclosure
Completely it is communicated to those skilled in the art.It should be noted that in the absence of conflict, embodiment in the present invention and
Feature in embodiment can be combined with each other.The present invention is discussed in detail below in conjunction with refer to the attached drawing and in conjunction with the embodiments.
Embodiment of the method
Referring to Fig. 1, Fig. 1 is the stream of distributed optical fiber sensing system geographical location provided in an embodiment of the present invention modification method
Cheng Tu.As shown in Figure 1, the distributed optical fiber sensing system geographical location modification method includes the following steps：
Step S100：Determine the geographical space distance of system sensing optical cable overall length and monitoring object；
Step S200：Setting alarm subregion is required according to the geographical environment of monitoring object and safety monitoring；
Step S300：Determine the sensing optic cable position and geographical location of each alarm subregion starting point；
Step S400：The corresponding sensing optic cable length of each alarm sectional and geographical space distance are calculated, is joined as correcting
Number is stored；
Step S500：After alert event occurs, the alarm subregion residing for alarm point is determined, repaiied further according to the alarm subregion
Positive parameter is modified calculating to alarm point geographical location.
In step s 200, alarm subregion setting need consider the passed through different zones of monitoring object ambient noise feelings
Condition and detection requirement；
In step S300, each sensing optic cable position for alarming subregion starting point can pass through distributed optical fiber vibration sensor
Calibration or optical cable rice mark determine；
In step S400, each corresponding sensing optic cable length of sectional of alarming makes the difference meter using starting point optical cable position
It calculates, and is stored collectively as corrected parameter with subregion geographical space distance；
It is as follows to the formula of alarm point geographical location corrected Calculation in step S500：
Wherein, P is alarm point geographical location after correcting, and A is alarm point in the alarm district location, and L is the alarm subregion
Cable length, M are the alarm subregion geographical space distance.Alarm subregion geographical space distance is multiplied by system using alarm point serial number
Spatial sampling interval obtains, and system space sampling interval calculation formula is as follows：
In formula, N is the system space sampling interval, and C is the light velocity, and n is optical cable refractive index, and Fs is system sampling frequency, is preset
System sampling frequency be 100MHz, then the system space sampling interval be calculated as 1 meter.
Specifically, in distributed optical fiber sensing system application process, sensing optic cable overall length can utilize optical time domain and loss feelings
Condition reflectometer measures, and object space distance to be monitored can be geographical according to calibration property is passed through in geography trend and work progress
GPS coordinate is calculated, and when determining alarm subregion starting point coordinate according to monitoring requirements, is passed using distributed optical fiber vibration
Sensing system carries out upset test in the significant geo point in monitoring region, observation system to the positioning result of disturbance point optical cable position into
Row confirms, also can carry out on-the-spot record according to sensing optic cable rice mark during embedded.
It is that embodiment is applied to distributed optical fiber sensing system alert event point geographical schematic, system referring to Fig. 2, Fig. 2
On the left of function pages it is that map is illustrated, including monitoring object respectively alarm geographical trend and position, right side is that warning message is shown, packet
The information such as alert event time of origin, position, type, handling result are included, when alert event occurs, responding agencies can be according to a left side
Side signal determines that approximate location occurs for the time, and warning message is accurately positioned event on the right side of reference, timely convenient for responding agencies
It is handled.
Device embodiment
The present embodiment additionally provides a kind of distributed optical fiber sensing system geographical location update the system, which includes：The
One module, the second module, third module, the 4th module and the 5th module.Wherein,
First module, the geographical space distance for determining system sensing optical cable overall length and monitoring object；Second module is used
According to the geographical environment of monitoring object and safety monitoring require that subregion of alarming is arranged；Third module, for determining each alarm point
The sensing optic cable position of area's starting point and geographical location；4th module, for calculating the corresponding sensing optic cable of each alarm sectional
Length and geographical space distance, are stored as corrected parameter；5th module, for after alert event occurs, determining report
The residing alarm subregion of alert point, calculating is modified further according to the alarm subregion corrected parameter to alarm point geographical location.
In above-described embodiment, the setting for subregion of alarming needs to consider the ambient noise feelings of the passed through different zones of monitoring object
The sensing optic cable position of condition and monitoring requirements, each subregion starting point of alarming can be demarcated by distributed optical fiber vibration sensor or light
Cable rice mark determines.
In above-described embodiment, each corresponding sensing optic cable length of sectional of alarming utilizes the biography of each alarm sectional starting point
Sensing optical cable position makes the difference calculating.It is as follows to the formula of alarm point geographical location corrected Calculation：
Wherein, P is alarm point geographical location after correcting, and A is alarm point in the alarm district location, and L is the alarm subregion
Sensing optic cable length, M are the alarm subregion geographical space distance.
In above-described embodiment, alarm subregion geographical space distance is multiplied by the system space sampling interval using alarm point serial number and obtains
.Wherein, system space sampling interval calculation formula is as follows：
Wherein, N is the system space sampling interval, and C is the light velocity, and n is sensing optic cable refractive index, and Fs is system sampling frequency.
System sampling frequency is 100MHz, then the system space sampling interval be calculated as 1 meter.
The present embodiment additionally provides one or more machine readable medias, instruction is stored thereon with, when by one or more
When processor executes so that equipment executes distributed optical fiber sensing system fibercuts monitoring and positioning method.
Fig. 3 shows the structure diagram for the exemplary computer device that can be used for putting into practice embodiment of the present invention.It can manage
Solution, client, agency and/or server described in present disclosure can be realized using computing device shown in Fig. 3.Such as
Shown in Fig. 3, computing device may include：CPU (central processing unit) 401, RAM (random access memory) 402, ROM are (read-only
Memory) 403, system bus 404, hard disk controller 405, keyboard controller 406, serial interface controller 407, parallel interface
Controller 408, display controller 409, hard disk 410, keyboard 411, serial peripheral equipment 412, concurrent peripheral equipment 413 and aobvious
Show device 414.In these components, what is coupled with system bus 404 has CPU 401, RAM 402, ROM 403, hard disk controller
405, keyboard controller 406, serial interface controller 407, parallel interface controller 408 and display controller 409.Hard disk
410 couple with hard disk controller 405, and keyboard 411 is coupled with keyboard controller 406, serial peripheral equipment 412 and serial line interface control
Device 407 processed couples, and concurrent peripheral equipment 413 is coupled with parallel interface controller 408, and display 414 is controlled with display
Device 409 couples.
Several embodiments of the present invention are described by way of example above.Above-mentioned different masses, operation with
And at least part of technology can be performed, by using hardware, processor executes firmware instructions, and processor executes software and refers to
It enables, or and its arbitrary combination.When being executed using the processor for executing firmware and software instruction, software or firmware instructions can
To be stored in arbitrary computer-readable storage, such as disk, CD either other storage mediums in a RAM or ROM
Or flash memory, processor, hard disk, CD, disk etc..Similarly, software and firmware instructions can be transferred to use
Family either system by arbitrary known either desired transmission mode include for example, computer readable diskette or other just
It takes formula computer storage system or passes through telecommunication media.Telecommunication media typically specifically talks about computer-readable instruction, data knot
Structure, the program module either other data such as carrier wave or other transmission mechanisms in modulated message signal.By example,
It not limits, communication media includes wire medium such as cable network or single line connection and wireless medium, such as sound, nothing
Line frequency, infrared and other wireless mediums.To which software and firmware instructions can be transferred to user or system, pass through
Communication channel, such as telephone wire, DSL lines, cable TV line, fiber optic cable, wireless channel, internet, etc. is (by portable
Storage medium provides such software, is counted as identical or interchangeable).Software or firmware instructions may include
And its readable instruction causes processor to execute different actions when being executed by a processor.
It should be noted that embodiments of the present invention can be realized by the combination of software, hardware or software and hardware.
Hardware components can be realized using special logic；Software section can store in memory, by instruction execution system appropriate
System, such as microprocessor or special designs hardware execute.It will be understood by those skilled in the art that above-mentioned method
With system and can be realized using computer executable instructions and/or be included in the processor control code, such as such as
Disk, the mounting medium of CD or DVD-ROM, such as the programmable memory of read-only memory (firmware) or such as optics or
Such code is provided in the data medium of electrical signal carrier.The equipment and its module of present embodiment can be by such as surpassing
The semiconductor or such as field-programmable gate array of large scale integrated circuit or gate array, logic chip, transistor etc.
The hardware circuit realization of the programmable hardware device of row, programmable logic device etc., can also be with by various types of processors
The software realization of execution can also be realized by the combination such as firmware of above-mentioned hardware circuit and software.
The communication network referred in specification may include disparate networks, including but not limited to LAN (" LAN "), wide area
Net (" WAN "), network (for example, internet) and ad-hoc network (for example, ad hoc peer-to-peer networks) based on IP agreement.
In addition, although the operation of the method for the present invention is described with particular order in the accompanying drawings, this do not require that or
Hint must execute these operations according to the particular order, or have to carry out shown in whole operation could realize it is desired
As a result.On the contrary, the step of described in flow chart, can change the sequence of execution.It is additional or it is alternatively possible to omit certain steps
Suddenly, multiple steps are merged into a step, or a step is decomposed into multiple steps.
Although detailed description of the preferred embodimentsthe present invention has been described by reference to several, it should be appreciated that, the present invention is not limited to
Disclosed specific implementation mode.The present invention is directed to cover various modifications included in spirit and scope of the appended claims
And equivalent arrangements.Scope of the following claims is to be accorded the broadest interpretation, to include all such modifications and equivalent knot
Structure and function.
Claims (10)
1. a kind of distributed optical fiber sensing system geographical location modification method, which is characterized in that the described method comprises the following steps：
Step S100：Determine the geographical space distance of system sensing optical cable overall length and monitoring object；
Step S200：Setting alarm subregion is required according to the geographical environment of monitoring object and safety monitoring；
Step S300：Determine the sensing optic cable position and geographical location of each alarm subregion starting point；
Step S400：Calculate the corresponding sensing optic cable length of each alarm sectional and geographical space distance, as corrected parameter into
Row storage；
Step S500：After alert event occurs, the alarm subregion residing for alarm point is determined, join further according to the alarm subregion amendment
It is several that calculating is modified to alarm point geographical location.
2. distributed optical fiber sensing system geographical location according to claim 1 modification method, which is characterized in that in step
In S300, the sensing optic cable position of each subregion starting point of alarming can be demarcated by distributed optical fiber vibration sensor or optical cable rice mark
To determine.
3. distributed optical fiber sensing system geographical location according to claim 1 modification method, which is characterized in that in step
In S400, each corresponding sensing optic cable length of sectional of alarming is made the difference using the sensing optic cable position of each alarm sectional starting point
It calculates.
4. distributed optical fiber sensing system geographical location according to claim 1 modification method, which is characterized in that in step
It is as follows to the formula of alarm point geographical location corrected Calculation in S500：
Wherein, P is alarm point geographical location after correcting, and A is alarm point in the alarm district location, and L is alarm subregion sensing
Cable length, M are the alarm subregion geographical space distance.
5. distributed optical fiber sensing system geographical location according to claim 4 modification method, which is characterized in that alarm point
Area's geographical space distance is multiplied by the acquisition of system space sampling interval using alarm point serial number.
6. distributed optical fiber sensing system geographical location according to claim 5 modification method, which is characterized in that system is empty
Between sampling interval calculation formula it is as follows：
Wherein, N is the system space sampling interval, and C is the light velocity, and n is sensing optic cable refractive index, and Fs is system sampling frequency.
7. distributed optical fiber sensing system geographical location according to claim 6 modification method, which is characterized in that system is adopted
Sample frequency be 100MHz, then the system space sampling interval be calculated as 1 meter.
8. a kind of distributed optical fiber sensing system geographical location update the system, it is characterised in that including：
First module, the geographical space distance for determining system sensing optical cable overall length and monitoring object；
Second module, for requiring setting alarm subregion according to the geographical environment of monitoring object and safety monitoring；
Third module, sensing optic cable position and geographical location for determining each alarm subregion starting point；
4th module is joined for calculating the corresponding sensing optic cable length of each alarm sectional and geographical space distance as correcting
Number is stored；
5th module, for after alert event occurs, determining the alarm subregion residing for alarm point, being repaiied further according to the alarm subregion
Positive parameter is modified calculating to alarm point geographical location.
9. distributed optical fiber sensing system geographical location according to claim 8 update the system, which is characterized in that alarm
The formula of point geographical location corrected Calculation is as follows：
Wherein, P is alarm point geographical location after correcting, and A is alarm point in the alarm district location, and L is alarm subregion sensing
Cable length, M are the alarm subregion geographical space distance.
10. one or more machine readable medias, are stored thereon with instruction, when executed by one or more processors so that
Equipment executes the method such as one or more of claim 1-7.
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| CN111024212A (en) * | 2020-01-14 | 2020-04-17 | 辽宁国运通达通信集团有限公司 | Method for converting optical cable distance into landmark position by using distributed optical fiber sensing system |
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| CN112484837A (en) * | 2020-11-24 | 2021-03-12 | 电子科技大学 | Optical fiber space positioning system and implementation method thereof |
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