CN103985225B - Flexible passive protection net intelligent monitor system - Google Patents
Flexible passive protection net intelligent monitor system Download PDFInfo
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- CN103985225B CN103985225B CN201310050073.7A CN201310050073A CN103985225B CN 103985225 B CN103985225 B CN 103985225B CN 201310050073 A CN201310050073 A CN 201310050073A CN 103985225 B CN103985225 B CN 103985225B
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/02—Alarms for ensuring the safety of persons
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Abstract
The present invention relates to a kind of flexible passive protection net intelligent monitor system, this flexibility passive protection net intelligent monitor system includes: dangerous matter sources catches system, signal processing system and warning system, in the case of described signal processing system determines that protection network occurs and/or reaches degree of danger, send alarm signal and/or information in one or more ways.Wherein fiber-optic grating sensor is pre-installed on the lower supporting rope of flexible passive protection net, by the pulling force of monitoring protection supporting rope off the net, and monitoring in real time and protection network falling rocks and the signal being associated that scores a goal, and this signal is returned to fiber Bragg grating (FBG) demodulator.
Description
Technical field
The present invention relates to the technical fields such as Fibre Optical Sensor, Computer systems and signal monitoring, more particularly to limit
The flexible protective technology of slope disaster, and it is applicable to the safety monitoring of flexible passive protection net.
Background technology
Man of Shi Geduo mountain country of China, particularly western and mountain area, the southeast, collapse rock-fall, mud-rock flow, slip collapse, slippery, collapse
Fall and the slope geological hazards on escarpments and slopes such as weathering off often has generation, especially at railway, highway such wire line of project the most
Seriously, its disaster has the some feature such as many, wide, line length, under the conditions of limited resource (human and material resources, financial resources)
Casing pipe protection is extremely difficult the most hard to guard against, becomes and threatens the principal element facing slope engineering normal operation.
Along with greatly developing of super highway railway construction in recent years, conventional keeping away needed due to it around, steep gradient measure
Many financial resources, material resources and durations, the most not for allowing.In traditional mask system, mortar flag stone and shotcrete bank protection can cause domatic
Vegetation deterioration, and passage meeting separate with domatic over time, the structural life-time problems such as generation is locally collapsed, peeling.Therefore, by
In the complexity of geological disaster itself, randomness, regional differentiation and multiple, it is particularly main shape with power high speed impact
The geological disasters such as the collapse rock-fall of formula, mud-rock flow frequent, the conventional art measure based on rigid structure can not meet
Need now.
So, in slope protection measures now, flexible passive protection net is simple, easy to maintenance with its intrinsic construction,
The advantages such as advanced technology, safe and reliable, environmental protection and economy, design selection standardization, have obtained rapid development with universal, have applied
In many side slope protection engineerings.
Broad development along with flexible passive protection net, it is to avoid the single passive protection mode of protection network, to protection network work
It is the most imperative that situation of making implements omnibearing intellectual monitoring.The primary structure of flexible passive protection net comprises ring network, fixes
System (anchor pole, draw anchor line, pedestal and supporting rope), pressure-reducing ring and four major parts of steel column.Existing monitoring means is by optical fiber
What grating pulling force sensor was held on flexible passive protection net draws on anchor line and upper supporting rope, supervises the pulling force on rope
Survey.
But generally there is following point in this monitoring system:
(1) for a flexible passive protection net system, draw anchor line quantity many, and draw the power concordance born on anchor line
Difference, for grasping protection network situation, needs to install pulling force sensor on each rope, and number of sensors used is big, installs loaded down with trivial details, becomes
This is higher；
(2) as it has been described above, draw the power concordance on anchor line poor, this makes to need to set respectively alarm threshold value；
(3) it is arranged on and draws pulling force sensor on anchor line can not flexible passive protection net be ruptured to report to the police；
(4) upper supporting rope pulling force is affected relatively big by pull-up anchor line and pressure-reducing ring, and stress is complicated, and the rule of alarm threshold value is difficult
To obtain；
(5) monitoring position improper, monitoring scheme means existing defects etc., the system that causes is low to be failed to report and to report phenomenon by mistake tight
Weight.
The most flexible passive protection net monitoring means has the tension variations by monitoring pull-up anchor line to monitor whether
Stone impacts, and protection network situation of scoring a goal but cannot accurately judge, and in the middle of Practical Project uses, scores a goal and be considered flexible passive anti-
The inefficacy of protecting wire net system, thus wrong report can be there is and fail to report in this monitoring means.And for flexible passive protection net system, one
Individual system comprises some anchor lines that draws, and the every pulling force drawing anchor line is inconsistent, causes this kind of monitoring system cannot correctly judge falling rocks
Energy level, therefore only as a kind of supplementary means.
For the problems referred to above, the present invention proposes and a kind of overcome the deficiencies in the prior art and meet economical and efficient demand
Intelligent monitor system for flexible passive protection net.
Summary of the invention
According to embodiments of the invention, it is provided that a kind of dangerous matter sources for flexible passive protection net catches system, and this is
System includes: fiber-optic grating sensor or the distributive array being made up of described fiber-optic grating sensor, fiber Bragg grating (FBG) demodulator
And signal transmission fiber；Described fiber-optic grating sensor is pre-installed on the lower supporting rope of flexible passive protection net, passes through
The pulling force of monitoring protection supporting rope off the net, monitors the signal being associated with protection network falling rocks and scoring a goal etc. in real time, and should
Signal returns to described fiber Bragg grating (FBG) demodulator；Described fiber Bragg grating (FBG) demodulator and described fiber-optic grating sensor or described distribution
Formula array is connected by signal transmission fiber.
Owing to pulling force suffered on the lower supporting rope of protection network is identical on this lower supporting rope length direction everywhere
's；And, the object such as falling rocks, when falling, due to the effect of gravity, acts on the bottom of soft protecting net the most significantly
(that is, the part residing for lower supporting rope).Therefore, the present invention utilizes above-mentioned principle, avoids dexterously when pulling force sensor is arranged
When respectively drawing on anchor line, measured each value of thrust is along with the different and dramatically different feelings of the distance respectively drawing anchor line from be hit a little
Condition.Compared to pulling force sensor being arranged on the way respectively drawn on anchor line, by the set-up mode of the present invention, it is possible to direct, accurate
Really obtain and act on certain buckles that once flexible protective belonging to supporting rope is online (and without considering that this impact occurs at this
Which position of soft protecting net).
Preferably, dangerous matter sources according to embodiments of the present invention catches system, and described fiber Bragg grating (FBG) demodulator can be to from institute
State the signal that fiber-optic grating sensor reflects to be demodulated processing, and draw corresponding wavelength signals.
The optical signal reflected from described fiber-optic grating sensor is demodulated processing by described fiber Bragg grating (FBG) demodulator,
The dangerous matter sources situation on the monitoring point at each fiber-optic grating sensor place is drawn according to result.
Preferably, dangerous matter sources according to embodiments of the present invention catches system, and wherein, described fiber-optic grating sensor is optical fiber
Grating pulling force sensor, for monitoring when flexible passive protection net falls to having falling rocks, the wavelength of fiber grating is relative to optical fiber light
The variable quantity of the characteristic wavelength of grid, and it is returned to described fiber Bragg grating (FBG) demodulator.
Preferably, dangerous matter sources according to embodiments of the present invention catches system, and wherein, described fiber grating pulling force sensor sets
The side that the position put on supporting rope under described protection network may be impacted with protection network is contrary.
Preferably, dangerous matter sources according to embodiments of the present invention catches system, and described fiber Bragg grating (FBG) demodulator includes: laser is sent out
Injection device, is used for generating laser；And input/output port, for laser is exported in signal transmission fiber, wherein, described
Signal transmission fiber is connected with fiber-optic grating sensor, and laser returns to described optical fiber light after fiber-optic grating sensor reflects
Grid (FBG) demodulator, and wherein, laser is when fiber-optic grating sensor internal reflection, in the case of by outside effect, reflection
The wavelength of laser changes, and has predetermined dependency between described change and external action.
According to embodiments of the invention, it is provided that a kind of signal processing system, described signal processing system includes: signal connects
Receiving apparatus and the processor unit being connected with described signal receiving device；Described signal receiving device catches with described dangerous matter sources
System is connected, for receiving the signal catching system from above-described dangerous matter sources；Described processor unit is arranged to lead to
Cross analysis to determine:
1) which fiber-optic grating sensor each optical maser wavelength signal relates to；
2) change of the wavelength of laser involved by and the representative supporting rope tension variations amount of correspondence；
3) whether whether described protection network by rock-fall impact and occur falling rocks to score a goal.
Preferably, signal processing system according to embodiments of the present invention, described signal processing system also includes storing device,
Wherein prestore: the corresponding relation between fiber-optic grating sensor and characteristic wavelength；Wavelength change and fiber-optic grating sensor
Corresponding relation between the supporting rope pulling force surveyed；Supporting rope pulling force and rockfall and the corresponding relation that scores a goal occur.
Preferably, signal processing system according to embodiments of the present invention, described processor unit can be also configured to for:
Determine whether the wavelength signals corresponding to one or several fiber-optic grating sensors disappears；And according to predetermined logic rule
Then, thus judge it is that position, where there occurs rockfall and/or the damage of which bar optical fiber cable.
According to still another embodiment of the invention, it is provided that a kind of flexible passive protection net intellectual monitoring warning system, bag
Include: foregoing dangerous matter sources catches system；The foregoing signal processing system that system is connected is caught with described dangerous matter sources
System；And the warning system being connected with described signal processing system, determine that protection network falls in described signal processing system
In the case of stone scores a goal and/or reaches degree of danger, send alarm signal and/or information in one or more ways..
Preferably, warning system according to embodiments of the present invention, described dangerous matter sources catches system and described signal processing system
Unite by wired or wireless mode is remotely connected.
Dangerous matter sources according to embodiments of the present invention catches system, signal processing system and warning system and has access to other road
Interior system and road external information system, improve the outside IWF of this system, brings guarantee also to accurate and effective warning.
According to embodiments of the invention, it is provided that a kind of monitoring method using flexible passive protection net, wherein optical fiber light
Grid pulling force sensor is arranged on the lower supporting rope of described flexible passive protection net for monitoring the tension variations of lower supporting rope, from
And the trend of the deformation of monitoring protection net system and whether reach degree of danger.
Preferably, described fiber grating pulling force sensor is connected with described lower supporting rope by shackle.
The present invention selects the change of the lower supporting rope upper pulling force of monitoring protection net, can effectively judge falling rocks score a goal and
Falling rocks energy level, judges after described monitoring alarm feeds back, the current falling rocks of protection network is the need of cleaning and which kind of reaches
Cleaning is needed during degree.And use current advanced fiber-optic grating sensor and Transmission Fibers with matching, Ke Yishi
Existing simple in construction, strong adaptability, good stability monitoring system, especially in railway depopulated zone, non-Electric region and severe
All can long-term stable operation under environment such that it is able to provide accurately for routine maintenance work and the dangerous situation that has found that it is likely that in time and
Full and accurate data, it is provided that a set of improve feasible flexible passive protection net intelligent monitor system.
Accompanying drawing explanation
Fig. 1 is the soft protecting net monitoring system schematic according to the embodiment of the present invention；
Fig. 2 is the soft protecting net monitoring scheme schematic diagram according to the embodiment of the present invention；
Fig. 3 is the fiber grating pulling force sensor structural representation according to the embodiment of the present invention.
Detailed description of the invention
For making the purpose of the present invention, structure and advantage clearer, below in conjunction with the accompanying drawings the present invention is carried out further
Describe in detail.
Soft protecting net monitoring system schematic according to embodiments of the present invention illustrates that in FIG, it at least includes: dangerous
Source catches system, signal processing system, and warning system.In the present invention, described dangerous matter sources catches system by being provided with biography
The assemblies such as flexible passive protection net, monitoring point, sensing light and the fiber Bragg grating (FBG) demodulator of sensor are constituted.
According to the present invention, by monitoring the change of flexible protective supporting rope off the net pulling force, it is possible to reach monitoring with or without falling rocks
The purpose of surge guard net.As in figure 2 it is shown, wherein 2-1 is lower supporting rope, 2-2 is fiber grating pulling force sensor, and 2-3 is anti-
Protecting wire net.Flexible passive protection net system is when by rock-fall impact, and whole system stressing conditions changes.Now, lower support
Restrict in addition to the pretension when by installing, be also distributed to the pulling force on this lower supporting rope by rock-fall impact.Therefore can be by
Fiber grating pulling force sensor is arranged on the lower supporting rope of described flexible passive protection net, props up as in figure 2 it is shown, be used for monitoring down
The tension variations of support rope, and then reach the trend of the deformation of monitoring protection net system and whether reach degree of danger.Thus, structure
Build soft protecting net intelligent monitor system, it is possible to achieve remotely, in real time the flexible passive protection net of monitoring stress and then
Early warning and alert service are provided.
Flexible passive protection net system is will to be arranged at slope based on the flexible fence of diamond wire netting or ring network
Upper certain position, intends the object of protection, typically by rhombus for intercepting the stone (or junk) that tumbles on slope to avoid it to destroy
Wire rope net or belt net (additional layer steel wire grid when need to intercept fritter falling rocks), fixed system (include anchor pole, draw anchor line,
Pedestal and supporting rope), pressure-reducing ring and four major parts of steel column constitute.
Supporting rope is hung in order to realize metal flexible net by design form paving, metal flexible net is played bracing reinforcement effect
Steel wire rope.Impact load must pass to supporting rope from flexible net, therefore supporting rope must assure that in design its have with
The constant response feature that in net, shock point position is unrelated.The supporting rope with pressure-reducing ring and/or snub rope is set at ad-hoc location,
Decapacitation realizes outside this function, also achieves that energy dissipation, netting is sagging and optimum balance between maintenance needs.
Flexible passive protection net monitoring system should have three basic functions: is monitored lower supporting rope pulling force, can
Automatically identify the variable quantity in regulation category, effective means can be taked after determining described variable quantity to be analyzed or report
Alert.
For reaching above-mentioned purpose, at least should be by three parts as it is shown in figure 1, monitor system according to the soft protecting net of the present invention
Constitute: dangerous matter sources catches system, signal processing system, and warning system.Further, since facility is for equipment dependability requirement
Higher, system must possess self-diagnosing function, and when device signal collection path is impaired when, equipment should be able to provide corresponding report
Alert signalisation staff safeguards.
Wherein, shown dangerous matter sources catches the groundwork of system is supporting rope tension variations information under collection site protection network
And change into data, and send the data to signal processing system by transmission means such as signal transmission networks；Letter
The groundwork of number processing system is to catch system according to respective algorithms analysis from dangerous matter sources to transmit the data come (such as with optical fiber
Based on grating pulling force sensor wavelength variation values, calculate the pulling force suffered by lower supporting rope involved by currently processed signal),
And combine shock duration to judge whether protection network scores a goal, and send corresponding alarm signal to warning system；
Warning system can send the warning means such as light, sound, electricity after receiving the alarm signal that signal processing system sends and inform respectively
The corresponding warning message of level work personnel.Each system is described separately below.
Dangerous matter sources catches system
According to the present invention, described fiber grating pulling force sensor is generally located on the lower supporting rope of flexible passive protection net
On.In the present invention, it is preferred to use fiber grating pulling force sensor.But, be also not excluded for using other kinds of, can feel
Survey the sensor of pulling force suffered by supporting rope.Fig. 3 is fiber grating pulling force sensor structural representation, and wherein the first half of Fig. 3 shows
Having gone out front section view and the partial enlarged view of described fiber grating pulling force sensor structure, the lower half of Fig. 3 shows
The top view of described fiber grating pulling force sensor structure.Fiber grating pulling force sensor includes guard shield 3-1, elastic matrix
3-2, strain fiber grating 3-3, optical fiber plug 3-4, " O " RunddichtringO 3-5, outdoor armored optical cable 3-6.Wherein, at initial shape
Under state, strain fiber grating 3-3 entirety glue encapsulates or is fixed on elastic matrix 3-2 by other forms, and strain optical fiber light
The longitudinal axis of grid 3-3 is substantially parallel with the expection draw direction of described elastic matrix 3-2；Guard shield 3-1 is installed by screw
On elastic matrix 3-2, play the effect of protection fiber grating；" O " RunddichtringO 3-5 is arranged on guard shield 3-1 and elasticity
Between matrix 3-2, play sealing function；Optical fiber plug 3-4 is arranged on guard shield 3-1；Outdoor armored optical cable 3-6 crimping
Or the mode such as gluing is fixed on optical fiber plug 3-4.The fiber grating pulling force sensor left and right peace by elastic matrix 3-2
Dress hole shackle links together with supporting rope under protection network, and pulling force is applied to the left and right installing hole of elastic matrix by shackle
On, under left and right installing hole pulling force effect, described elastic matrix 3-2 produces strain, and strain transfer is given strain fiber grating 3-
3, described in the characteristic wavelength of fiber grating that is encapsulated on elastic matrix will produce change.Therefore, said structure makes optical fiber
Grating sensor can reflect the force-bearing situation of lower supporting rope in real time, truly.But, other kinds of optical fiber grating sensing
Device can also make used for this invention, is used for monitoring lower supporting rope pulling force variable.Due to the effect of gravity, falling rocks typically directly rushes
Hit the bottom of protection network, in order to avoid the fiber-optic grating sensor on lower supporting rope is directly damaged by falling rocks, it is preferable that according to this
The dangerous matter sources of inventive embodiments catches system, and described fiber grating pulling force sensor is arranged under described protection network on supporting rope
The side that position may be impacted with protection network is contrary.This avoids when buckles is little, and falling rocks just clashes into and damages
Fiber grating pulling force sensor and then cause system to be mistaken for the probability of huge falling rocks, reduces the possibility of false alarm as far as possible.
Fiber-optic grating sensor is one of Fibre Optical Sensor of being most widely used at present, can measure strain, temperature, pressure
The parameters such as power, displacement, flow, liquid level.Its sensing principle is generally basede on measured parameter change and causes screen periods and effectively refraction
The change of rate, thus cause the change of spectra features wavelength (reflection wavelength), measure by measuring the amount of movement of characteristic wavelength
Above-mentioned parameter.According to the present invention, the operation principle of described fiber grating pulling force sensor is:
Each fiber-optic grating sensor receives laser from lasing light emitter (such as fiber Bragg grating (FBG) demodulator), and is reflected back certain wave
Long laser.For fiber grating pulling force sensor, under the influence of pulling force, the optical maser wavelength being reflected by back can occur partially
Move.For each fiber-optic grating sensor, the characteristic wavelength λ of its reflection is between 1510-1590nm.The amount △ λ of wavelength shift
And there is set relation between pulling force F, this relational expression can be expressed as:
△λi=k*Fi(1)
Wherein k is predetermined coefficient, is an empirical value or test determination value.
So, the pulling force of supporting rope under protection network is detected by the centre wavelength relative variation of fiber grating reflection light
Variable relatively.Fiber grating pulling force sensor has quasi-distributed networking (tens arrive hundreds of point), Measurement Resolution high (0.01%
FS), measure wide ranges (0KN～300KN), operating temperature range width, not by electromagnetic interference, corrosion-resistant, anti shock and vibration, anti-
The advantages such as fatigue, length in service life, can be widely applied to anchor cable, anchor pole, supporting rope, draw anchor line upper pulling force and prestressed standard
Really measure.
Described dangerous matter sources catches system and specifically includes that sensor distributive array, signal transmission fiber and fiber grating solution
Adjust instrument.
Wherein, described sensor distributive array can include multiple fiber grating pulling force sensor, but, described sensing
Device distributive array can also only include a fiber grating pulling force sensor.Described sensor distributive array can be
It is connected in series, or is connected in parallel, it is also possible to be the mode combined in parallel and serial, thus constitute certain topological network.
Such as, each detected object can arrange a sensor, the sensor in multiple measurands is through certain mode
Connect.Specifically, described fiber grating pull force sensor array can be connected in multiple branches light path, and each branch light path is led to
Cross optical cable connecting box to be connected with main cable, main cable each branch optical cable is connected on fiber Bragg grating (FBG) demodulator device.Wherein,
Laser signal is sent to fiber-optic grating sensor by optical fiber cable by described fiber Bragg grating (FBG) demodulator.Usually, fiber grating
(FBG) demodulator sends predetermined beam of laser, and this Shu Jiguang can include the laser of multiple predetermined wavelength, it is also possible to be to have necessarily
The laser of spectral width.According to predetermined set, under normal condition, each fiber grating pulling force sensor reflection specific wavelength swashs
Light；
And in the case of flexible passive protection net is by rock-fall impact, the stress of lower supporting rope changes, and causes light
The reflection wavelength of fine grating pulling force sensor produces change (being likely in extreme circumstances cause fiber-optic grating sensor to lose efficacy),
Therefore be there is skew in the optical maser wavelength causing being reflected or disappear.Described fiber Bragg grating (FBG) demodulator reflects back into by comparing
The wavelength change of the laser of this fiber Bragg grating (FBG) demodulator is monitored the external environment condition of each fiber-optic grating sensor and is produced it
Impact.
Catch system by the dangerous matter sources of the present invention, can collect obtain about certain position or certain regional area such as certain
The information that service on buses or trains section is caused danger.Wherein, if obtain certain fiber-optic grating sensor reflection laser wavelength occur skew and
Become rapidly in a flash big at certain, it means that under the position of this sensor, supporting rope pulling force there occurs change, and this sheet protection network is subject to
Arrive rock-fall impact；If wavelength shift speed, illustrate that dangerous foreign body (such as falling rocks) impact energy is bigger；If wavelength
Moment increase after in certain time period, become again negative value, illustrate this sheet protection network by after rock-fall impact, protection network scores a goal；As
The wavelength of fruit reflection laser reaches certain predetermined value, illustrate under this sheet protection network pulling force suffered by supporting rope up to or over
Preset value, this sheet protection network has the falling rocks of bulk deposition, needs cleaning；And if should be by swashing that this sensor reflects
Light disappears, then explanation is likely to damage the sensor of this position.Signal processing system now can be utilized above-mentioned to analyze
Signal collected by dangerous matter sources seizure system, thus draw certain conclusion.
Signal processing system
According to the principle of the present invention, need to arrange signal processing system and analyze and catch systematic collection from above-mentioned dangerous matter sources and obtain
The signal arrived.Preferably, a signal processing system can analyze the signal from numerous dangerous matter sources seizure systems.Its
In, signal processing system can catch system by wired mode such as optical cable with dangerous matter sources and be connected.Alternatively, it is also possible to it is logical
Cross wireless mode to send and transmission information, such as, realize the transmission of information by means of satellite network.
Wherein, described signal processing system can specifically be embodied as computer server, and it includes or connects corresponding
Data base.According to the present invention, described signal processing system, including processor, process and logic judgment unit as data, use
It is analyzed in the signal relevant with sensor wavelength change that fiber Bragg grating (FBG) demodulator is sent and judges.In server in advance
Storage sensor or sensor array center wavelength data, the correspondence between center wavelength variation amount and lower supporting rope under tension
Relation, and the destruction situation grade of this sheet protection network corresponding to pulling force suffered by lower supporting rope.
When flexible passive protection net is increased by pulling force by shock loading, supporting rope, and signal processing system receives center
Wavelength variation values.First, it is determined that described wavelength is belonging to the signal of which fiber grating pulling force sensor, in view of fiber grating pull
The amount of force transducer wavelength shift and the characteristic wavelength of each described sensor are comparatively speaking the least value, are typically only one
General and adjacent band the sensor characteristics wavelength of wavelength after the individual or amount of a few nanometer, and change also is able to well
Distinguish.So, it is determined that after characteristic wavelength signal, be assured that it is the signal of which fiber-optic grating sensor corresponding.Further,
May determine that the most again after determining sensor corresponding to the installation site of supporting rope under protection network.Secondly, the ripple of sensor is determined
Lower supporting rope tension value corresponding to long skew.According to described previously, pulling force that sensor is sensed and sensor
Wavelength shift corresponding, the most just whether can be determined at sensor mounting location by the amount of monitoring wavelength shift
There is suitable stress to be measured.Again, it is judged that falling rocks situation that lower supporting rope is occurred by value of thrust this sheet protection network corresponding and
The order of severity.Reduce again after being rapidly increased to sensor full scale such as the wavelength shift of sensor, and be reduced to more inclined than occurring
The situation that the numerical value of lead is the least, then show that flexible passive protection net has scored a goal.
Wherein, sensor record the corresponding situation between pulling force size with soft protecting net shock loading rule of thumb or
Measuring is estimated.This corresponding relation is not fixing, and can be result set in advance, so can also be according to tool
Body situation suitably changes.
Wherein, in addition it is also necessary to judge that the situation that wavelength signals does not the most occur occur: if being transferred to the biography of server
Sensor signal does not includes or interrupts the signal of certain fiber-optic grating sensor corresponding, then means to there occurs certain serious feelings
Condition, such as this sensor are ruined.This needs to carry out safe handling at once.If all the sensors connected by a light splitting cable
Blackout, then be likely to this optical cable destroyed.According to the criterion of risk factor rank, server can be concluded
For " burst major disaster situation " or " optical cable damage " etc..The logic rule judged, specifically can be set by operator, or
Modify.
Warning system
Signal processing system, the most described server section, occur or the extent of injury obtaining disaster by analysis
Information after, by this information with the form of certain medium be sent to relevant personnel, such as region be responsible for railway security personnel,
Maintainer, and higher level policymaker.
Wherein, degree of danger is divided into three ranks by warning system, is respectively as follows:
One-level: impacted；
Two grades: serious impact；
Three grades: destroy；
Wherein, monitoring, alarming is divided into again early warning and warning two ways.Wherein, one-level (impact) and two grades are (serious
Impact) belong to modes of warning, three grades (destructions) belong to alarm mode.Can according to the feature of the peak signal of various sensors,
Shock duration and the multiple spot situation that is hit comprehensively is analyzed, and determines the threshold value of different energy level.
Wherein, by the personnel of responsible security monitoring, according to the situation of warning system feedback, can be by wired or wireless
Mode, such as phone, note, broadcast, warning lamp, warn to the relevant personnel or notice.
Wherein, in the present invention, the communications protocol that opening is good, can extend is employed, it is simple between three systems
Data are transmitted, and are conducive to setting up unified disaster prevention system.
Compared to pulling force sensor being arranged on the way respectively drawn on anchor line, by the set-up mode of the present invention, it is possible to straight
Connect, obtain exactly and act on certain buckles that once flexible protective belonging to supporting rope is online (and without considering that this impact is sent out
Raw in which position of this soft protecting net).The present invention is without significantly changing the basic knot of existing flexible passive protection net
Structure, only arranges pulling force sensor on lower supporting rope and just can obtain the actual value of shock loading to greatest extent.So, including on
The flexible passive protection net intelligent monitor system stating each ingredient has accurate, safe, instant relative to existing mode
The advantage highlighted with low cost etc..This system can also be relevant with other and railroad track monitoring system compatible mutually or parallel,
To realize comprehensive function.Present invention is generally applicable to the monitoring situation of crag side slope flexible protecting net system.
The functional character of the present invention is not limited to those examples above provided, and so it is contemplated that appointing in spirit of the present invention
The function of meaning kind.Although the present invention has been described in connection with preferred embodiments thereof, but be not intended to by this
Invention is limited to object lesson set forth herein.On the contrary, the scope of the present invention is limited solely by described claim.
Claims (14)
1. dangerous matter sources catches a system, and this dangerous matter sources catches system and includes:
Fiber-optic grating sensor or the distributive array being made up of described fiber-optic grating sensor, fiber Bragg grating (FBG) demodulator and
Signal transmission fiber；
Described fiber-optic grating sensor is pre-installed on the lower supporting rope of flexible passive protection net, by off the net of monitoring protection
The pulling force of support rope, monitoring in real time and protection network falling rocks and the signal being associated that scores a goal, and this signal is returned to described light
Fine grating demodulation instrument；
Described fiber Bragg grating (FBG) demodulator passes through signal transmission fiber phase with described fiber-optic grating sensor or described distributive array
Connect.
Dangerous matter sources the most according to claim 1 catches system, and wherein, described fiber Bragg grating (FBG) demodulator is to from described optical fiber light
The signal that gate sensor reflects is demodulated processing, and draws corresponding wavelength signals.
Dangerous matter sources the most according to claim 2 catches system, and wherein, described fiber Bragg grating (FBG) demodulator obtains according to result
Go out the dangerous matter sources situation on the monitoring point at each fiber-optic grating sensor place.
Dangerous matter sources the most according to claim 1 catches system, and wherein, described fiber-optic grating sensor is fiber grating pulling force
Sensor, for monitoring when flexible passive protection net falls to having falling rocks, the wavelength of fiber grating is relative to the feature of fiber grating
The variable quantity of wavelength, and it is returned to described fiber Bragg grating (FBG) demodulator.
Dangerous matter sources the most according to claim 4 catches system, and wherein, described fiber grating pulling force sensor includes elastic base
Body and strain fiber grating, in an initial condition, strain fiber grating is integrally fixed on elastic matrix, and strain optical fiber
The longitudinal axis of grating is substantially parallel with the expection draw direction of described elastic matrix.
Dangerous matter sources the most according to claim 5 catches system, wherein, by the left and right installation being arranged on elastic matrix
Hole, links together fiber grating pulling force sensor with supporting rope under protection network with shackle.
7. catching system according to the dangerous matter sources one of claim 1-6 Suo Shu, wherein, described fiber-optic grating sensor is arranged on institute
The side that the position stated under protection network on supporting rope may be impacted with protection network is contrary.
8. catching system according to the dangerous matter sources one of claim 1-3 Suo Shu, wherein, described fiber Bragg grating (FBG) demodulator includes: swash
Light emitting devices, is used for generating laser；And input/output port, for laser is exported in signal transmission fiber；
Described signal transmission fiber is connected with fiber-optic grating sensor, and laser returns to institute after fiber-optic grating sensor reflects
State fiber Bragg grating (FBG) demodulator, and wherein, laser is when fiber-optic grating sensor internal reflection, in the situation by outside effect
Under, the wavelength of reflection laser changes, and has predetermined dependency between described change and external action.
9. a signal processing system, described signal processing system includes:
Signal receiving device and the processor unit being connected with described signal receiving device；
Described signal receiving device is connected with according to the dangerous matter sources seizure system one of claim 1-8 Suo Shu, is used for receiving
The signal of system is caught from described dangerous matter sources；Described processor unit is arranged through analysis and determines:
1) which fiber-optic grating sensor each optical maser wavelength signal relates to；
2) change of the wavelength of laser involved by and the representative supporting rope tension variations amount of correspondence；
3) whether whether described protection network by rock-fall impact and occur falling rocks to score a goal.
Signal processing system the most according to claim 9, wherein, described signal processing system also includes and described process
The storage device that device unit is connected, prestores: between fiber-optic grating sensor and characteristic wavelength the most in the storage device
Corresponding relation；Corresponding relation between the lower supporting rope pulling force that wavelength change and fiber-optic grating sensor are surveyed；Described lower
Support rope tension and rockfall and the corresponding relation scored a goal occur.
11. signal processing systems according to claim 9, wherein, described processor unit be also configured to for:
Determine whether the wavelength signals corresponding to one or several fiber-optic grating sensors disappears；
And according to predetermined logic rule, thus judge it is that position, where there occurs rockfall and/or which bar optical fiber cable
Damage.
12. 1 kinds of flexible passive protection net intelligent monitor systems, including:
System is caught according to the dangerous matter sources one of claim 1-8 Suo Shu；
With described dangerous matter sources catch system be connected according to the signal processing system one of claim 9-11 Suo Shu；And
In described signal processing system, the warning system being connected with described signal processing system, determines that protection network generation falling rocks breaks
Net and/or in the case of reaching degree of danger, sends alarm signal and/or information in one or more ways.
13. flexible passive protection net intelligent monitor systems according to claim 12, wherein, described dangerous matter sources catches system
Pass through wired with described signal processing system or wireless mode is remotely connected.
14. flexible passive protection net intelligent monitor systems according to claim 12, wherein, described dangerous matter sources catches system
System, signal processing system and warning system access system and road external information system in other road.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT201800007671A1 (en) * | 2018-07-31 | 2020-01-31 | Luca Maffeo Albertelli | HYDROGEOLOGICAL RISK MONITORING SYSTEM AND METHOD |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN112611348B (en) * | 2019-11-18 | 2022-07-15 | 健研检测集团有限公司 | Invisible protective net wire spacing detection method |
| CN111157026B (en) * | 2020-02-12 | 2021-07-02 | 太原理工大学 | Distributed optical fiber sensing detection device and method for railway rockfall protection net |
| CN115294749B (en) * | 2022-09-29 | 2022-12-27 | 久恩金属制品(昆山)有限公司 | Multi-position monitoring system based on metal protective net |
| CN117782399A (en) * | 2023-12-29 | 2024-03-29 | 中煤科工开采研究院有限公司 | Monitoring device and monitoring method for anchor net surface stress |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6571027B2 (en) * | 1999-10-07 | 2003-05-27 | Peter W. E. Smith | Method and devices for time domain demultiplexing of serial fiber bragg grating sensor arrays |
| JP2006215649A (en) * | 2005-02-01 | 2006-08-17 | Mitsubishi Electric Corp | Method for detecting bragg grating sensor, and method and apparatus for detecting amount of distortion thereof |
| CN202049011U (en) * | 2011-04-26 | 2011-11-23 | 中铁二院工程集团有限责任公司 | Fiber grating pull sensor for flexible rockfall protective net |
| CN102354433A (en) * | 2011-10-14 | 2012-02-15 | 武汉理工光科股份有限公司 | Railway side slope crag rockfall monitoring and warning system based on fiber grating sensing technology |
| CN202257858U (en) * | 2011-10-14 | 2012-05-30 | 武汉理工光科股份有限公司 | Railway slope dangerous rockfall monitoring and alarm system based on fiber grating sensing technology |
| CN202329571U (en) * | 2011-12-02 | 2012-07-11 | 中铁二院工程集团有限责任公司 | Fiber bragg grating curvature sensor for monitoring stress deformation of flexible protective screening |
| CN203260156U (en) * | 2013-02-08 | 2013-10-30 | 同方威视技术股份有限公司 | Dangerous-source catching system and intelligent monitoring system of flexible passive guard net |
-
2013
- 2013-02-08 CN CN201310050073.7A patent/CN103985225B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6571027B2 (en) * | 1999-10-07 | 2003-05-27 | Peter W. E. Smith | Method and devices for time domain demultiplexing of serial fiber bragg grating sensor arrays |
| JP2006215649A (en) * | 2005-02-01 | 2006-08-17 | Mitsubishi Electric Corp | Method for detecting bragg grating sensor, and method and apparatus for detecting amount of distortion thereof |
| CN202049011U (en) * | 2011-04-26 | 2011-11-23 | 中铁二院工程集团有限责任公司 | Fiber grating pull sensor for flexible rockfall protective net |
| CN102354433A (en) * | 2011-10-14 | 2012-02-15 | 武汉理工光科股份有限公司 | Railway side slope crag rockfall monitoring and warning system based on fiber grating sensing technology |
| CN202257858U (en) * | 2011-10-14 | 2012-05-30 | 武汉理工光科股份有限公司 | Railway slope dangerous rockfall monitoring and alarm system based on fiber grating sensing technology |
| CN202329571U (en) * | 2011-12-02 | 2012-07-11 | 中铁二院工程集团有限责任公司 | Fiber bragg grating curvature sensor for monitoring stress deformation of flexible protective screening |
| CN203260156U (en) * | 2013-02-08 | 2013-10-30 | 同方威视技术股份有限公司 | Dangerous-source catching system and intelligent monitoring system of flexible passive guard net |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT201800007671A1 (en) * | 2018-07-31 | 2020-01-31 | Luca Maffeo Albertelli | HYDROGEOLOGICAL RISK MONITORING SYSTEM AND METHOD |
| WO2020026137A1 (en) * | 2018-07-31 | 2020-02-06 | Nesa S.R.L. | System and method for monitoring hydrogeological risk |
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