CN110530498A - Long range optical cable dynamic monitoring system - Google Patents
Long range optical cable dynamic monitoring system Download PDFInfo
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- CN110530498A CN110530498A CN201910732493.0A CN201910732493A CN110530498A CN 110530498 A CN110530498 A CN 110530498A CN 201910732493 A CN201910732493 A CN 201910732493A CN 110530498 A CN110530498 A CN 110530498A
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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
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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
- H04B10/071—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using a reflected signal, e.g. using optical time domain reflectometers [OTDR]
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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
- H04B10/50—Transmitters
- H04B10/501—Structural aspects
- H04B10/503—Laser transmitters
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J14/00—Optical multiplex systems
- H04J14/02—Wavelength-division multiplex systems
- H04J14/0201—Add-and-drop multiplexing
- H04J14/0202—Arrangements therefor
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Electromagnetism (AREA)
- Optics & Photonics (AREA)
- General Physics & Mathematics (AREA)
- Length Measuring Devices By Optical Means (AREA)
- Optical Communication System (AREA)
Abstract
The present invention relates to a kind of long range optical cable dynamic monitoring systems, comprising: warning center and the multiple monitoring terminals connecting with the warning center；The monitoring terminal is arranged in communications optical cable transfer station, including transmitting terminal and receiving end, carries out information exchange between the transmitting terminal and receiving end of two neighboring monitoring terminal.The present invention is by being arranged terminal inside communications optical cable transfer station, and signal transmission is carried out by the light between communications optical cable transfer station, it does not need to be independently arranged optical fiber, implement simply, cost is relatively low, and location technology of each terminal based on interference can independently monitor noise spot, strong antijamming capability, positioning accuracy is high, is conducive to promptly and accurately find noise spot, enhances the anti-damage ability of optical cable.
Description
Technical field
The present invention relates to fiber optic cable monitor device field, specifically a kind of long range optical cable dynamic monitoring system.
Background technique
Along lightguide cable link nearby, if big machinery engineering construction accidentally or construction personnel does not know and nearby lays
There is optical cable, can be easy to destroy optical cable, and this destruction will cause heavy losses.
Distributed optical fiber vibration sensing system is using an optical fiber as sensing element, and any point on sensor fibre was both
The information transfer channel that sensing unit is again other sensing units, thus can obtain be measured along this optical fiber space and
Temporal extraneous vibration distributed intelligence is able to solve numerous problems of current fields of measurement, has huge application potential.
The method that Distributed Optical Fiber Sensing Techniques use at present mainly has bounce technique, Wavelength Scanning Method and interferometry.Reflection
Method can be divided into probe beam deflation method OFDR (Optical Frequency Domain Reflectormetry) and optical time domain reflection
Method OTDR (Optical Time Domain Reflectormetry) is generated under external perturbation action using optical fiber
The method that the effects such as Rayleigh, Raman, Brillouin measure；The measurement of Wavelength Scanning Method mainly utilizes polarization-maintaining light
Fibre emergence pattern coupling effect in external perturbation action realizes that this method resolving power is high, but measurement range is small, system cost
Height is unfavorable for functionization；Interferometry is demodulated using phase of the various forms of interference devices to light wave in optical interference circuit,
Method to obtain tested parameter information, the difficult point of concrete application is how to construct interference system, by the variable quantity of phase
It is changed into the light intensity variable quantity that can be monitored with photodetector, determines to reach discovery failure in time and carry out fine cut to failure
The effect of position.
It would therefore be highly desirable to the failure of lightguide cable link can be found in time and carry out fine cut positioning to failure by providing one kind, and
Economical and practical fiber optic cable monitor scheme.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of long range optical cable dynamic monitoring systems, to solve existing skill
Defect present in art.
The technical scheme to solve the above technical problems is that
The embodiment of the present invention provides a kind of long range optical cable dynamic monitoring system, comprising: warning center and with the early warning
Multiple monitoring terminals of center connection；The monitoring terminal is arranged in communications optical cable transfer station, including transmitting terminal and receiving end,
Information exchange is carried out between the transmitting terminal and receiving end of two neighboring monitoring terminal；Wherein, the transmitting terminal includes first laser
Light source, second laser light source and wavelength division multiplexer, the receiving end include wavelength division multiplexer, faraday rotation mirror, 3*3 coupler
And controller；The first laser light source and the second laser light source are used to emit the laser light source of different wave length, the hair
The wavelength division multiplexer of sending end is used to for the laser light source that the first laser light source and the second laser light source emit being merged into
Beam of laser light source, and send by the optical fiber between Liang Ge communications optical cable transfer station the wavelength division multiplexer of the receiving end to；
The wavelength division multiplexer of the receiving end sends faraday's rotation to for separating the laser light source that the transmitting terminal transmits
Tilting mirror；The faraday rotation mirror is used for the laser light source that arrives of reflection receivable, and the laser light source after reflection is sent to described
3*3 coupler；The 3*3 coupler is used to interfere the laser light source received along different light paths, and will be after interfering
Light source send the controller to；The controller is used to determine the location information of disturbance based on received laser light source, and
Determining location information is sent to the warning center；The warning center is used to be determined based on received location information and be disturbed
The position in source is simultaneously shown.
Optionally, the warning center is used to determine the position of disturbing source based on received location information and be shown,
It specifically includes: the position of the disturbing source being determined based on the location information that two neighboring monitoring terminal is sent and is shown；With
And
The position of the disturbing source is determined based on the location information that multiple monitoring terminals are sent and is shown.
Optionally, the location information sent based on two neighboring monitoring terminal determines that the position of the disturbing source is gone forward side by side
Row display, comprising:
If from being spaced in the first preset value between two positions that two neighboring monitoring terminal receives, in map
It is upper to show two positions received；
If being greater than the second preset value from the interval between two neighboring two positions receiving of monitoring terminal, respectively to
The two neighboring monitoring terminal sends instruction and re-registrates the control instruction that confidence breath measures.
Optionally, further includes:
If described from being spaced between the new position of two re-measured that the two neighboring monitoring terminal receives
In first preset value, then the two new positions received are shown on map；
If being greater than institute from the interval between the new position of two re-measured that the two neighboring monitoring terminal receives
The second preset value is stated, then is shown according to the result that described two monitoring terminals measure twice.
Optionally, if described to carry out display according to described two results for measuring twice of monitoring terminals include: wherein one
The change in location that a monitoring terminal measures twice is little, and the change in location that another monitoring terminal measures twice is larger, then will become
Change the position that little monitoring terminal measures to show on map with the first color, the position of the monitoring terminal measurement changed greatly
It is shown on map with being different from the second color of the first color.
Optionally, the location information sent based on multiple monitoring terminals is determined the position of the disturbing source and is shown
Show, comprising:
The multiple positions received are subjected to average value processing, obtained mean location is shown on map；Or
The multiple positions received are all shown on map；Or
The position of the multiple integrated distributions received is shown on map with the first color, by remaining sparse point
The position of cloth is shown on map with the second color for being different from the first color.
Optionally, the warning center carries out information by fieldbus or cordless communication network and the monitoring terminal
Interaction.
Optionally, the controller carries out information exchange by wireless transmitter module and the warning center.
Optionally, further includes: multiple underground spaces between communications optical cable transfer station, the underground space setting are set
There is well lid, downhole controller and the level monitor connecting with downhole controller and wireless transmission mould are provided on the well lid
Block, when the level monitor monitors well lid run-off the straight, the downhole controller will characterize the report of well lid run-off the straight
Alert signal is sent to the warning center by the wireless sending module.
Optionally, further include the camera being connect with the downhole controller, monitor well lid in the level monitor
When run-off the straight, image that the camera is shot is sent to described by the downhole controller by the wireless sending module
Warning center.
The beneficial effect of long range optical cable dynamic monitoring system provided in an embodiment of the present invention includes at least: by communicating
Terminal is set inside optical cable transmission station, and carries out signal transmission by the light between communications optical cable transfer station, is not needed solely
It erects and sets optical fiber, implement simply, cost is relatively low, and location technology of each terminal based on interference can independently monitor noise spot,
Strong antijamming capability, positioning accuracy is high, is conducive to promptly and accurately find noise spot, enhances the anti-damage ability of optical cable.
Detailed description of the invention
Fig. 1 is distributed frame schematic diagram of the present invention；
Fig. 2 data transmission structure schematic diagram between Liang Ge communications optical cable of the present invention transfer station.
(description of symbols)
1, warning center, 2, data switching exchane, 3, monitoring terminal, 31, transmitting terminal, 32, receiving end, 33, first laser light
Source, 34, second laser light source, 35, wavelength division multiplexer, 36, faraday rotation mirror, 37,3*3 coupler, 38, controller, 39, nothing
Line transmitting module, 4, communications optical cable transfer station, the underground 5- space.
Specific embodiment
The principle and features of the present invention will be described below with reference to the accompanying drawings, and the given examples are served only to explain the present invention, and
It is non-to be used to limit the scope of the invention.
Fig. 1 is distributed frame schematic diagram of the present invention；Fig. 2 data transmission knot between Liang Ge communications optical cable of the present invention transfer station
Structure schematic diagram.
As depicted in figs. 1 and 2, the embodiment of the present invention provides a kind of long range optical cable dynamic monitoring system, comprising: in early warning
The heart 1 and the multiple monitoring terminals 3 being connect with the warning center 1；The monitoring terminal 3 is arranged in communications optical cable transfer station 4,
Including transmitting terminal 31 and receiving end 32, information exchange is carried out between the transmitting terminal and receiving end of two neighboring monitoring terminal；Wherein,
The transmitting terminal 31 includes first laser light source 33, second laser light source 34 and wavelength division multiplexer 35, and the receiving end 32 includes
Wavelength division multiplexer 35, faraday rotation mirror 36,3*3 coupler 37 and controller 38；The first laser light source 33 and described
Dual-laser light source 34 is used to emit the laser light source of different wave length, and the wavelength division multiplexer 35 of the transmitting terminal 31 is used for described the
One laser light source 33 and the laser light source of the second laser light source 34 transmitting are merged into beam of laser light source, and logical by two
Optical fiber between letter optical cable transmission station sends the wavelength division multiplexer 35 of the receiving end to；The wavelength division multiplexer of the receiving end 32
35 for separating the laser light source that the transmitting terminal transmits, and sends the faraday rotation mirror 36 to；Faraday's rotation
Tilting mirror 36 is used for the laser light source that reflection receivable arrives, and the laser light source after reflection is sent to the 3*3 coupler 37；It is described
3*3 coupler 37 sends the light source after interfering to for interfering the laser light source received along different light paths
The controller 38；The controller 38 is used to determine the location information of disturbance based on received laser light source, and will be determining
Location information is sent to the warning center 1；The warning center 1 is used to determine the position of disturbing source based on received location information
It sets and is shown.
In embodiments of the present invention, warning center 1 may be provided in work station, by data transmission network, such as pass through
Fieldbus or cordless communication network and the monitoring terminal 3 carry out information exchange.Controller 37 can be for data processing
The existing equipment of function and control function can carry out information exchange by wireless transmitter module 39 and the warning center 1.Wirelessly
Transmitting module 39 can be carried out data transmission by the data switching exchane 2 with wireless communication function with warning center 1, to realize
Monitor the information exchange between terminal 3 and warning center 1.
In embodiments of the present invention, first laser light source 33 and second laser light source 34 can emit difference to be existing
The equipment of wavelength.Wavelength division multiplexer 35, faraday rotation mirror 36 and 3*3 coupler 37 can be existing equipment, their function
It is identical with working principle as existing equipment, here, them are discussed in detail in omission to avoid repeating.
The working principle of long range optical cable dynamic monitoring system provided in an embodiment of the present invention are as follows: by utilizing wavelength-division multiplex
Technology, merges feeding optical cable in transmitting terminal for the laser signal source of different wave length and transmits, and uses wavelength-division multiplex in receiving end
Device separates the light of different wave length, then reaches the controller in receiving end along respective path by 3*3 coupler, due to shape
At different interference, when applying external disturbance source, according to the principle of interference of light wave, same disturbing source can be to different light paths
Wavelength laser generates different interference signals, compares the location information of the available disturbance of spectrum signature of two paths of signals, specifically
Judgment method can refer to method disclosed in the prior art, and it will not be described here.Hereinafter, to the warning center root of the embodiment of the present invention
It is specifically described according to the position that the location information that monitoring terminal determines obtains disturbing source.
Further, the warning center 1 is for determining the position of disturbing source based on received location information and being shown
Show, specifically can include:
The position of the disturbing source is determined based on the location information that two neighboring monitoring terminal is sent and is shown；And
The position of the disturbing source is determined based on the location information that multiple monitoring terminals are sent and is shown.
Wherein, the location information sent based on two neighboring monitoring terminal determines position and the progress of the disturbing source
Display, it may include:
If from being spaced in the first preset value between two positions that two neighboring monitoring terminal receives, in map
It is upper to show two positions received；
If being greater than the second preset value from the interval between two neighboring two positions receiving of monitoring terminal, respectively to
The two neighboring monitoring terminal sends instruction and re-registrates the control instruction that confidence breath measures.
In embodiments of the present invention, the second preset value can be same or different with the first preset value.In one example,
One preset value is greater than the second preset value can be different, for example, the first preset value is 20cm, the second preset value is 1m, but is not limited to
In this, the first preset value and the second preset value can be set according to actual needs.
In another preferable example, first preset value can be identical with second preset value.Further, described
It is stored with for example to be stored in the form of tables of data in warning center 1 and characterizes each monitoring unique identification of 3 identity of terminal and right
It should be in the maximum error of measuring of monitoring terminal unique identification.When adjacent monitoring terminal 3 sends location information to warning center 1,
The unique identification of monitoring terminal 3 is sent simultaneously, in this way, warning center 1 can retrieve acquisition according to the unique identification received
Send the maximum error of measuring of monitoring terminal 3.In this case, the first preset value and the second preset value can be set to adjacent two
The function of the maximum error of measuring of a monitoring terminal, such as it is set as the sum of the maximum error of measuring of two neighboring monitoring terminal.
Further, the maximum investigation range that user pre-enters, in this case, the first preset value are also stored in warning center 1
Sum that can be set to the maximum error of measuring of two neighboring monitoring terminal with the second preset value, with it is maximum check in range compared with
Big person.
Further, if being spaced in the first preset value between two positions that two neighboring monitoring terminal receives
It is interior, then two positions received are shown on map, may also include that the corresponding maximum error of measuring in two positions of display is constituted
Region lap, such as two monitoring terminals are respectively 3A and 3B, the position difference that monitoring terminal 3A and 3B are monitored
For A and B, monitoring the corresponding maximum error of measuring of terminal 3A is EA, and the corresponding maximum error of measuring of monitoring terminal 3B is EB, first
The value of preset value is EA+EB.Display when, show respectively the position of A and B and emphasis show [A-EA, A+EA] and
The lap of [B-EB, B+EB].
Further, if between the new position of two re-measured that the two neighboring monitoring terminal receives
It is interposed between in first preset value, then shows the two new positions received on map.It is similar with two positions of aforementioned display,
When showing the new position of two received on map, the area that the corresponding maximum error of measuring in two new positions is constituted may also display
The lap in domain.For example, two monitoring terminals are respectively 3A and 3B, the new position point that monitoring terminal 3A and 3B are monitored again
Not Wei A and B, the corresponding maximum error of measuring of monitoring terminal 3A is EA, and the corresponding maximum error of measuring of monitoring terminal 3B is EB, the
The value of one preset value is EA+EB.When display, show that the position of A and B and emphasis show [A-EA, A+EA] respectively
The lap of [B-EB, B+EB].
Further, if between the new position of two re-measured that the two neighboring monitoring terminal receives
Every being greater than second preset value, then shown according to the result that described two monitoring terminals measure twice, comprising: if its
In the change in location that measures twice of monitoring terminal it is little, the change in location that another monitoring terminal measures twice is larger, then
The position of the little monitoring terminal measurement of variation is shown on map with the first color, the monitoring terminal measurement changed greatly
Position be different from the first color the second color shown on map, in one example, the first color can for red, second
Color can be green, but not limited to this, it can be set as needed as other different colors.The setting of location variation can root
It is set according to actual needs, in one example, for example, being believed that variation less, works as variable quantity when variable quantity is less than 20cm
Greater than 1m it is believed that changing greatly, this present invention is not particularly limited.In another example, when a monitoring terminal two
When the variable quantity of the position of secondary measurement is less than twice of the maximum error of measuring of the monitoring terminal, it is believed that variation is little；Conversely, recognizing
To change greatly.
Further, at the position of the little monitoring terminal measurement of display variation, monitoring terminal measurement is also shown
The lap in the region that the corresponding maximum error of measuring in position is constituted twice, for example, two monitoring terminals are respectively 3A and 3B,
Less, respectively A1 and A2 monitor the corresponding maximum error of measuring of terminal 3A for measurement position variation twice before and after monitoring terminal 3A
For EA, when display, the lap that emphasis shows [A1-EA, A1+EA] and [A2-EA, A2+EA] is preferably gone back.
Further, if between the new position of two re-measured that the two neighboring monitoring terminal receives
Every being greater than second preset value, then shown according to described two results for measuring twice of monitoring terminals, may also include that as
The change in location that fruit two monitoring terminals measure twice is all little, then shows what two monitoring terminals measured twice with the first color
Region.Preferably, the weight in the region that the corresponding maximum error of measuring in position that two monitoring terminals measure twice is constituted also is shown
Folded part.For example, two monitoring terminals are respectively 3A and 3B, the position that front and back measures twice is respectively A1, A2, B1, B2, monitoring
The corresponding maximum error of measuring of terminal 3A and 3B is respectively EA and EB, then A1, A2 are shown with the first color when display,
B1, B2.Preferably, the lap position that emphasis shows [A1-EA, A1+EA] and [A2-EA, A2+EA], and [B1-EB, B1+ are gone back
EB] and [B2-EB, B2+EB] lap.
Specifically, in the present embodiment, when outside is there are disturbing source, and disturbing source is located between two monitoring terminals 3
When on optical fiber, the position (two positions) that terminal 3 directly judges disturbing source, and the position that will be judged can be monitored according to two
It sets and is reported to warning center 1.If two are located closer to, two positions can be presented in warning center 1 on map；
If the separation of two positions is distant, warning center 1 can return to feedback signal to two monitoring terminals 3, it is desirable that two
Monitoring terminal re-measures, and warning center 1 determines the position that disturbance occurs according to 4 location informations measured twice.Specifically,
If the distance that two results for re-measuring of monitoring terminals still separate is closer, warning center 1 will newly measure two
A position shows (such as red) on map.If the result re-measured is still distant, illustrate that monitoring terminal can
The failure of precision aspect can occur, if measured value is closer twice for some monitoring terminal, and before another monitoring terminal
Measured value afterwards twice is distant, then illustrating that the closer terminal precision of measured value is accurately, therefore by the monitoring terminal
Measured value show that the measured value of another terminal is shown on map with green on map with red.
Further, the location information sent based on multiple monitoring terminals determines position and the progress of the disturbing source
Display, it may include: (1) the multiple positions that receive are subjected to average value processing, obtained mean location is shown on map；Or
Person, (2) all show the multiple positions received on map；Alternatively, (3) exist the position of the multiple integrated distributions received
It is shown on map with the first color, the position of remaining sparse distribution is different from the second of the first color on map
Color shows that in one example, the first color can be red, and the second color can be green, but not limited to this, it can be according to need
It is set as other different colors.
Specifically, in the present embodiment, when outside is there are when disturbing source, and disturbing source is located at what M monitoring terminal was shared
When on optical fiber, the transmitting terminal 31 in M monitoring terminal 3 can issue signal, connecing in addition multiple (and M) monitoring terminals 3
Receiving end 32 can receive corresponding signal.In this way, in addition M monitoring terminal will judge the location information of M disturbance, and will
These location informations are sent to warning center 1.After warning center 1 receives this M location information, determined according to M location information
The position of disturbing source.Specifically, the position of disturbing source is determined according to following 3 kinds of modes: (1) mean value being sought to M position, it will be equal
Value position is shown on map；(2) M location information is shown on map；(3) judge that in M location information, comparing can
The position (such as point is than comparatively dense) of energy, is identified on map, unlikely position (such as putting more discrete) using red,
With green mark on map.
In an illustrative examples of the invention, long range optical cable dynamic monitoring system provided in an embodiment of the present invention is also wrapped
It includes: multiple underground spaces 5 between communications optical cable transfer station is set, the underground space 5 is provided with well lid, on the well lid
The level monitor and wireless sending module for being provided with downhole controller and being connect with downhole controller, in the level monitor
When monitoring well lid run-off the straight, the alarm signal for characterizing well lid run-off the straight is passed through the wireless hair by the downhole controller
Module is sent to be sent to the warning center.In one exemplary embodiment, wireless sending module can be by with wireless communication
The data switching exchane of function carries out data transmission with warning center.By the way that level monitor is arranged in well lid 5, when well lid 5 is sent out
When raw inclination, indicate that well lid is opened, controller sends alarm signal to warning center at this time, and being judged by live operator on duty should
Whether operation belongs to normal maintenance, if it is not, then notifying staff that scene is checked, so that maintenance becomes convenient, can keep away
Exempt from that the generation that optical cable is stolen or construction damages occurs.
In another illustrative examples of the present invention, long range optical cable dynamic monitoring system provided in an embodiment of the present invention is also
Including the camera being connect with the downhole controller, when the level monitor monitors well lid run-off the straight, the well
The image that the camera is shot is sent to the warning center by the wireless sending module by lower controller, for watch
Member's real time inspection live image, so as to more intuitively know field condition.
To sum up, long range optical cable dynamic monitoring system provided in an embodiment of the present invention passes through inside communications optical cable transfer station
Terminal is set, and carries out signal transmission by the light between communications optical cable transfer station, does not need to be independently arranged optical fiber, implement
Simply, cost is relatively low, and location technology of each terminal based on interference can independently monitor noise spot, and strong antijamming capability is fixed
Position precision is high, is conducive to promptly and accurately find noise spot, enhances the anti-damage ability of optical cable.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of long range optical cable dynamic monitoring system characterized by comprising warning center and connect with the warning center
Multiple monitoring terminals；The monitoring terminal is arranged in communications optical cable transfer station, including transmitting terminal and receiving end, two neighboring
It monitors and carries out information exchange between the transmitting terminal and receiving end of terminal；
Wherein, the transmitting terminal includes first laser light source, second laser light source and wavelength division multiplexer, and the receiving end includes wave
Division multiplexer, faraday rotation mirror, 3*3 coupler and controller；The first laser light source and the second laser light source are used
In the laser light source of transmitting different wave length, the wavelength division multiplexer of the transmitting terminal is used for the first laser light source and described the
The laser light source of dual-laser light source transmitting is merged into beam of laser light source, and passes through the optical fiber between Liang Ge communications optical cable transfer station
Send the wavelength division multiplexer of the receiving end to；The wavelength division multiplexer of the receiving end is used for the laser for transmitting the transmitting terminal
Light source separates, and sends the faraday rotation mirror to；The faraday rotation mirror is used for the laser light source that reflection receivable arrives, and
Laser light source after reflection is sent to the 3*3 coupler；The laser light source that the 3*3 coupler is used to receive is not along
Same light path is interfered, and sends the light source after interfering to the controller；The controller is used to swash based on received
Radiant determines the location information of disturbance, and determining location information is sent to the warning center；The warning center is used
In the position for determining disturbing source based on received location information and shown.
2. system according to claim 1, which is characterized in that the warning center is used for true based on received location information
Determine the position of disturbing source and shown, is specifically included:
The position of the disturbing source is determined based on the location information that two neighboring monitoring terminal is sent and is shown；And
The position of the disturbing source is determined based on the location information that multiple monitoring terminals are sent and is shown.
3. system according to claim 2, which is characterized in that the position letter sent based on two neighboring monitoring terminal
Breath determines the position of the disturbing source and is shown, comprising:
If being shown on map from being spaced in the first preset value between two positions that two neighboring monitoring terminal receives
Show two positions received；
If being greater than the second preset value from the interval between two positions that two neighboring monitoring terminal receives, respectively to described
Two neighboring monitoring terminal sends instruction and re-registrates the control instruction that confidence breath measures.
4. system according to claim 3, which is characterized in that further include:
If being spaced in described first between the new position of two re-measured that the two neighboring monitoring terminal receives
In preset value, then the two new positions received are shown on map；
If being greater than described the from the interval between the two neighboring new position of two re-measured that receive of monitoring terminal
Two preset values are then shown according to the result that described two monitoring terminals measure twice.
5. system according to claim 4, which is characterized in that the knot measured twice according to described two monitoring terminals
If it includes: that the change in location that measures twice of one of monitoring terminal is little, another monitoring terminal is twice that fruit, which carries out display,
The change in location of measurement is larger, then the position by the little monitoring terminal measurement of variation is shown on map with the first color, becomes
The position for changing biggish monitoring terminal measurement is shown on map with the second color for being different from the first color.
6. system according to claim 2, which is characterized in that the location information sent based on multiple monitoring terminals is true
The position of the fixed disturbing source is simultaneously shown, comprising:
The multiple positions received are subjected to average value processing, obtained mean location is shown on map；Or
The multiple positions received are all shown on map；Or
The position of the multiple integrated distributions received is shown on map with the first color, by remaining sparse distribution
Position is shown on map with the second color for being different from the first color.
7. system according to claim 1, which is characterized in that the warning center passes through fieldbus or wireless communication
Network and the monitoring terminal carry out information exchange.
8. system according to claim 1 or claim 7, which is characterized in that the controller by wireless transmitter module with it is described
Warning center carries out information exchange.
9. system according to claim 1, which is characterized in that further include: it is arranged in more between communications optical cable transfer station
A underground space, the underground space are provided with well lid, and downhole controller is provided on the well lid and is connected with downhole controller
The level monitor and wireless sending module connect, when the level monitor monitors well lid run-off the straight, the underground control
The alarm signal for characterizing well lid run-off the straight is sent to the warning center by the wireless sending module by device processed.
10. system according to claim 9, which is characterized in that it further include the camera being connect with the downhole controller,
When the level monitor monitors well lid run-off the straight, the downhole controller passes through the image that the camera is shot
The wireless sending module is sent to the warning center.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910732493.0A CN110530498B (en) | 2019-08-09 | 2019-08-09 | Long-distance optical cable dynamic monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910732493.0A CN110530498B (en) | 2019-08-09 | 2019-08-09 | Long-distance optical cable dynamic monitoring system |
Publications (2)
| Publication Number | Publication Date |
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