CN203558089U - Railway disaster prevention stereoscopic monitoring system and railway disaster prevention stereoscopic monitoring alarm system - Google Patents
Railway disaster prevention stereoscopic monitoring system and railway disaster prevention stereoscopic monitoring alarm system Download PDFInfo
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- CN203558089U CN203558089U CN201320457891.4U CN201320457891U CN203558089U CN 203558089 U CN203558089 U CN 203558089U CN 201320457891 U CN201320457891 U CN 201320457891U CN 203558089 U CN203558089 U CN 203558089U
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Abstract
The utility model relates to a railway disaster prevention stereoscopic monitoring system and a railway disaster prevention stereoscopic monitoring alarm system. The railway disaster prevention stereoscopic monitoring alarm system includes the railway disaster prevention stereoscopic monitoring system, a signal processing system connected with the disaster prevention stereoscopic monitoring system and an alarm system connected with the signal processing system and giving out alarm signals and/or information in one or multiple ways after the signal processing system determines that a protection net encounters danger and/or is in a certain danger level and vibration occurs and/or vibration volume reaches to a certain danger level.
Description
Technical field
The utility model relates to the technical fields such as Fibre Optical Sensor, signal processing, industrial information, rockfall protection and monitoring, particularly, by merging grille guard monitoring technology and collapse rock-fall monitoring technology, rockfall is carried out to stereoscopic monitoring warning, be applicable to the safety monitoring of Along Railway rockfall.
Background technology
Collapse rock-fall is one of China mountain area three the Nature disasters (landslide, mud-rock flow, avalanche), and collapse rock-fall disaster often occurs in the area, abrupt slope exposed at rock mass, fold ruptures and weathering is more serious.In mountain area, collapse rock-fall phenomenon happens occasionally, and gently makes railway and vehicle suffer slight breaking-up, heavy make road interrupt, to railway transportation, bring heavy losses.Collapse rock-fall disaster serious threat safety of railway traffic and passenger's life security, to railway transportation production, safety management, efficiency of operation, and economic benefit, social benefit have an immense impact on, become the important restriction factor of China's development of the West Regions and transport development great development.For this reason, actively take measures collapse hazard as far as possible effectively to protect and monitoring and warning, for railway operation and passenger's the security of the lives and property, have great profound significance and impact.Because the Dangerous Rock Body that forms collapse rock-fall disaster is distributed on high gradient slope more, from source, administer completely and will expend huge manpower and materials, be more the falling rocks safeguard procedures of taking before calamity at present.Before calamity in slope protection measures, the advantages such as flexible passive protection net is simple, easy to maintenance with its intrinsic construction, advanced technology, safe and reliable, environmental protection and economy, design selection normalisation, obtained development rapidly with universal, be applied in many side slope protection engineerings.Along with the development of flexible passive protection net, avoid the single passive protection mode of grille guard, the service condition of grille guard is implemented to all-around intelligent monitoring also imperative.
Mountain railway is mainly in foggy rainy few people area, plant maintenance difficulty, there is the hidden danger of damaging and stealing in general external device, the high-tension line of Along Railway can form the electromagnetic field of a strong high pressure, on rail, weak electric signal easily produces electromagnetic interference simultaneously, and therefore railway anti-disaster monitoring, alarming faces a lot of difficulties.It is carrier that optical fiber sensing technology adopts light wave, and optical fiber is medium, perception and the extraneous measured signal of transmission.The acceptant measured load of optical fiber, it is a kind of good end instr, optical fiber possesses safety (optical fiber itself is non-conductive), heatproof (high temperature, low temperature), anti-electromagnetic interference, radioresistance, does not produce the features such as electromagnetic interference and radiation simultaneously, can realize the high precision to object, glitch-free Real-Time Monitoring, be adapted at long-term stable operation under railway depopulated zone, non-electricity zone and rugged environment.
Collapse rock-fall monitoring technology aspect along the railway, carried out research and the application of part both at home and abroad, the following problem of ubiquity:
(1) passive Prevention Technique can effectively be protected falling rocks disaster threat object comprehensively, but is limited to the interdiction capability of passive protection system, is commonly used to tackle small-sized falling rocks.Effective setting of passive protection system depends on the degree of reliability of falling rocks motor behavior prediction, as motion path, jumping height, kinematic velocity, kinetic energy is isoparametric obtains.At present, initiatively and all Shortcomings of passive Prevention Technique, once falling rocks is skipped or broken through passive protection net, enter in railway boundary and will normally run to circuit the great harm of generation;
(2) monitoring location is not comprehensively, monitoring scheme means exist defect etc., causes system to fail to report and to report phenomenon by mistake serious;
(3) forecasting model and warning trigger condition is definite more difficult;
(4) independent grille guard is carried out monitoring, alarming or separately collapse rock-fall carried out to alert detecting, part monitoring equipment somewhat expensive, cannot widely apply.
For the problems referred to above, the utility model proposes a kind of railway anti-disaster stereoscopic monitoring warning for collapse rock-fall that overcomes the deficiencies in the prior art and meet economical and efficient demand (claiming again " virtual hangar tunnel ").
Utility model content
According to embodiment of the present utility model, provide a kind of for monitoring the railway anti-disaster stereo monitoring system of Along Railway rockfall, comprising: fiber-optic grating sensor individuality or the distributive array being formed by it, and fiber Bragg grating (FBG) demodulator; Wherein, described fiber Bragg grating (FBG) demodulator and described fiber-optic grating sensor or the array that consists of it are connected by signal transmission fiber; Described fiber-optic grating sensor comprises optical fiber grating pulling force sensor and optical fiber raster vibration sensor, described optical fiber grating pulling force sensor is arranged on the desired location of flexible passive protection net in advance, and described optical fiber raster vibration sensor is arranged on the desired location of rail.
Preferably, according to the railway anti-disaster stereo monitoring system of the utility model embodiment, described optical fiber grating pulling force sensor is by the pulling force of monitoring protection supporting rope off the net, in real time monitoring protection net falling rocks and the signal being associated such as score a goal; Described optical fiber raster vibration sensor is for monitoring in real time the signal being associated with falling rocks on rail; And, by signal transmission fiber, all signals are returned to described fiber Bragg grating (FBG) demodulator.Wherein, the optical fiber grating in described fiber-optic grating sensor can be reflection-type, can be also transmission-type.
Preferably, according to the optical fiber grating pulling force sensor in the railway anti-disaster stereo monitoring system of the utility model embodiment, for monitoring: when flexible passive protection net falls to having falling rocks, the wavelength of optical fiber grating, with respect to the power value variable quantity of the characteristic wavelength of optical fiber grating, and returns to described fiber Bragg grating (FBG) demodulator by the wavelength variable quantity of optical fiber grating.
Preferably, according to the optical fiber raster vibration sensor in the railway anti-disaster stereo monitoring system of the utility model embodiment, for monitoring: when falling to having falling rocks in railway boundary, the wavelength of optical fiber grating, with respect to the vibratory magnitude signal of the characteristic wavelength of optical fiber grating, and returns to described fiber Bragg grating (FBG) demodulator by the wavelength variable quantity of optical fiber grating.
Preferably, according to the railway anti-disaster stereo monitoring system of the utility model embodiment, wherein, the wavelength signals of described fiber-optic grating sensor passes to described fiber Bragg grating (FBG) demodulator in real time.
Preferably, according to the railway anti-disaster stereo monitoring system of the utility model embodiment, described fiber Bragg grating (FBG) demodulator comprises: laser beam emitting device, for generating laser; And input/output port, for Laser output is received to the laser returning to signal transmission fiber and from described signal transmission fiber, wherein, described signal transmission fiber is connected with fiber-optic grating sensor, laser turns back to described fiber Bragg grating (FBG) demodulator after fiber-optic grating sensor reflection, and wherein, laser is when fiber-optic grating sensor internal reflection, in the situation that being subject to external action, reflection swashs light wavelength and changes, and has predetermined correlativity between described variation and external action.
Preferably, according to the railway anti-disaster stereo monitoring system of the utility model embodiment, described fiber-optic grating sensor can be arranged on grille guard lower support rope.
Preferably, according to the railway anti-disaster stereo monitoring system of the utility model embodiment, described fiber-optic grating sensor can be arranged on the downside of rail.
Preferably, according to the railway anti-disaster stereo monitoring system of the utility model embodiment, described fiber Bragg grating (FBG) demodulator can carry out demodulation process to the signal returning from described fiber-optic grating sensor, and draws corresponding wavelength signals.
According to another embodiment of the present utility model, a kind of signal handling equipment is provided, described signal handling equipment comprises: signal receiving device and the processor unit being connected with described signal receiving device, described signal receiving device is for receiving the signal from described railway anti-disaster stereo monitoring system.
Preferably, described processor unit, be arranged to determine by analyzing:
1) which fiber-optic grating sensor each optical maser wavelength signal relates to;
2) vibratory magnitude being hit on energy or rail of the grille guard of the representative of the variation of related wavelength and correspondence;
3) whether described grille guard is subject to rock-fall impact and whether falling rocks occurs scoring a goal;
4) falling rocks size and whether invade in railway clearance.
Preferably, according to the signal handling equipment of the utility model embodiment, described signal handling equipment also comprises memory storage, wherein pre-stored: the corresponding relation between fiber-optic grating sensor and characteristic wavelength; Relation between impact energy and vibratory magnitude that wavelength change and optical fiber raster vibration sensor are surveyed; Corresponding relation between the danger of impact energy or vibratory magnitude and generation rockfall; Corresponding relation between the supporting rope pulling force that wavelength change and optical fiber grating pulling force sensor are surveyed; Supporting rope pulling force and the corresponding relation that rockfall occurs and score a goal.
Preferably, according to the signal handling equipment of the utility model embodiment, described processor unit can also be arranged for: determine whether to disappear corresponding to the wavelength signals of one or several fiber bragg grating sensors; And according to predetermined logic rules, judge thus grille guard is subject to whether the size of rock-fall impact energy, grille guard lost efficacy, whether falling rocks enters in railway boundary and falling rocks is pounded on rail position and/or which bar optical fiber cable damage.
According to another embodiment of the present utility model, a kind of railway anti-disaster stereoscopic monitoring warning for Along Railway rockfall is provided, comprising: above-mentioned railway anti-disaster stereo monitoring system; The above-mentioned signal handling equipment being connected with described railway anti-disaster stereo monitoring system; The warning being connected with described signal handling equipment, in the situation that described signal handling equipment determines that grille guard hazard level and vibratory magnitude generation occurs and/or reaches and/or reaches hazard level, in one or more modes, send alerting signal and/or information.
Preferably, according to the railway anti-disaster stereoscopic monitoring warning of the utility model embodiment, described railway anti-disaster stereo monitoring system is connected by wired or wireless mode at a distance with described signal handling equipment.
Preferably, according to the railway anti-disaster stereoscopic monitoring warning of the utility model embodiment, described monitor and alarm system comprises one or more described railway anti-disaster stereo monitoring systems, and described one or more railway anti-disaster stereo monitoring system provides to one or more described signal handling equipments the information of collecting.
According to railway anti-disaster stereo monitoring system, signal handling equipment and the monitor and alarm system of the utility model embodiment, can access system and road external information system in other road, improve the outside IWF of this system, bring guarantee also to accurate and effective warning, more safety of railway operation escorts.
It should be noted, any suitable treater all can be used in signal handling equipment of the present utility model, and without treater itself is improved.Therefore, the utility model is not intended to for the processor unit of signal handling equipment itself and the improvement of processing mode thereof, and is intended to the improvement for arrangement, tissue and the interrelation of each component part of described railway anti-disaster stereoscopic monitoring warning.
Railway anti-disaster stereoscopic monitoring warning of the present utility model, can actv. judge grille guard interception falling rocks situation (falling rocks energy level), the falling rocks situation of scoring a goal, after described monitoring, alarming feedback, judge when whether the current falling rocks of grille guard needs cleaning and reach which kind of degree and need to clear up.Coordinate the monitoring to vibration signal on rail simultaneously, can show whether falling rocks invades railway boundary, further determine the situation of falling rocks, thereby form the stereoscopic monitoring to collapse rock-fall.And because the propagation delay time of optical fiber almost can be left in the basket, if (one group) falling rocks has penetrated grille guard, so should (group) falling rocks collision on grille guard and rail and the signal producing will have certain intervals in time, and the waveform of signal will have obvious similarity, therefore by for example comparing in real time the signal on same position place grille guard and rail, can judge exactly generation and the scale thereof of falling rocks, avoid efficiently failing to report and reporting by mistake.And adopt current advanced person's fiber-optic grating sensor and Transmission Fibers with matching, the monitoring system of can implementation structure simple, strong adaptability, good stability, especially all can long-term stable operation under railway depopulated zone, non-electricity zone and rugged environment, thereby can and find in time that for route handling labor possible dangerous situation provides accurate and full and accurate data, a set of feasible collapse rock-fall stereoscopic monitoring warning of improving is provided.
Accompanying drawing explanation
Fig. 1 is according to the general frame figure of the railway anti-disaster stereoscopic monitoring warning of the utility model embodiment;
Fig. 2 A and 2B are according to the erection plan of the fiber-optic grating sensor of the utility model embodiment;
Fig. 3 is according to the diagram of circuit of the processing of the processor unit execution in the signal handling equipment of the utility model embodiment.
The specific embodiment
For making the purpose of this utility model, structure and advantage clearer, below in conjunction with accompanying drawing, preferred embodiment of the present utility model is described in detail further.
Fig. 1 is according to the general frame figure of the railway anti-disaster stereoscopic monitoring warning of the utility model embodiment.Railway anti-disaster stereoscopic monitoring warning shown in Fig. 1 is monitored and is combined " land " by monitoring and rail in " sky " of grille guard respectively, forms the stereoscopic monitoring of collapse rock-fall is reported to the police.
For achieving the above object, according to railway anti-disaster stereo monitoring system of the present utility model, at least should be formed by three parts: railway anti-disaster stereo monitoring system (as shown in Figure 1), signal handling equipment and warning.In addition, because facility is had relatively high expectations for equipment dependability, system must possess self-diagnosing function, and when device signal collection path is impaired, equipment can provide corresponding alerting signal and notify staff to safeguard.
Wherein, shown in the groundwork of railway anti-disaster stereo monitoring system be collection site danger sources information and change into data, and send to signal handling equipment by transmission medias such as signal transmission networks; The groundwork of signal handling equipment is the data that send from railway anti-disaster stereo monitoring system according to respective algorithms analysis, and combinative prevention net is monitored and rail monitoring comprehensively judges the situation of falling rocks, and send corresponding alerting signal to warning; Warning main task is can send the warning means such as light, sound, electricity and inform the corresponding alarm message of staff at different levels after receiving the alerting signal that signal handling equipment sends.Each system is described respectively below.
Railway anti-disaster stereo monitoring system
According to an embodiment of the present utility model, railway anti-disaster stereo monitoring system comprises: fiber-optic grating sensor individuality or the distributive array consisting of it; And fiber Bragg grating (FBG) demodulator.Wherein, described fiber Bragg grating (FBG) demodulator and described fiber-optic grating sensor or the array that consists of it are connected by signal transmission fiber.Described fiber-optic grating sensor is divided into two kinds, optical fiber grating pulling force sensor on a kind of lower support rope that is arranged on flexible passive protection net, a kind of optical fiber raster vibration sensor that is arranged on predetermined rail below, the signal being associated when being used for monitoring in real time and falling to having falling rocks in railway boundary, and this signal is returned to described fiber Bragg grating (FBG) demodulator.
Optical fiber grating pulling force installation of sensors is on grille guard; protecting net system is to be arranged at certain position on slope take diamond wire netting or ring network as main flexible fence; for tackling, on slope, tumble stone (or junk) to avoid it to destroy the object of intending protection, generally by diamond wire netting or belt net (additional layer of steel wire grid while needing interception fritter falling rocks), fixed system (anchor pole, draw anchor line, pedestal and supporting rope), pressure-reducing ring and four main portions of steel column, formed.Supporting rope is to realize metal flexible net by design form, to spread the steel rope of hanging, metal flexible net is play bracing reinforcement effect.Impact load must pass to supporting rope from flexible mesh, therefore supporting rope must guarantee that it has the constant response feature location-independent with the interior shock point of net in design, the supporting rope design form of pressure-reducing ring and/or snub rope is set at ad-hoc location, decapacitation realizes outside this function, also realized the optimum balance between the sagging and maintenance needs of energy dissipation, netting.According to the utility model, by the variation of monitoring soft protecting net lower support rope tension, can reach the object that monitoring has or not rock-fall impact grille guard.As shown in Figure 2 A, wherein 2-1 is lower support rope, 2-2 is fiber grating displacement sensor, 2-3 is grille guard, flexible passive protection net system is when being subject to rock-fall impact, whole system stressing conditions changes, lower support rope except install time pretension, also be subject to rock-fall impact and be distributed to the pulling force on supporting rope, therefore can be by optical fiber grating pulling force installation of sensors on the lower support rope of described flexible passive protection net, as shown in Figure 2 A, for monitoring the tension variations of lower support rope, and then reach monitoring protection net system distortion trend and whether reach hazard level.Thus, build grille guard monitoring system, can realize the strained condition of the long-range net of monitoring protection in real time and then provide early warning and alert service.
Optical fiber raster vibration sensor is installed on rail downside to embrace a dress form, is fixed with stainless steel screw.Optical fiber raster vibration sensor can pass through 25 meters of laying modes of sensor single track spacing, adopts dual sensor to realize monitoring function with alarm strategy.Particularly, as shown in Figure 2 B, optical fiber raster vibration sensor can be arranged on parallel track or vertical mode the downside of track.But optical fiber raster vibration sensor also can otherwise be arranged on the desired location of track as required.As an example, optical fiber raster vibration sensor is for monitoring when falling to having falling rocks in railway boundary, and the wavelength of optical fiber grating is with respect to the vibratory magnitude signal of the characteristic wavelength of optical fiber grating, and returned to described fiber Bragg grating (FBG) demodulator.
Fiber-optic grating sensor is one of optical fiber transducer being most widely used at present, can monitor strain, the parameter such as temperature, pressure, displacement, flow, liquid level.Its sensing principle generally changes and causes the variation of grating cycle and effective refractive index based on measured parameter, thereby causes the variation of grating characteristic wavelength (reflection wavelength), by the amount of movement of measuring characteristic wavelength, measures above-mentioned parameter.According to the utility model, the principle of work of described fiber-optic grating sensor is:
Each fiber-optic grating sensor receives laser from lasing light emitter (such as fiber Bragg grating (FBG) demodulator), and is reflected back the laser of specific wavelength.For optical fiber grating pulling force or vibration sensor, under the impact of pulling force and vibration, the optical maser wavelength being reflected back by it can be offset.For each fiber-optic grating sensor, the characteristic wavelength λ of its reflection is between 1510-1590nm.Between the amount △ λ of wavelength shift and pulling force (or vibratory magnitude) F, have set relation, this relational expression can be expressed as:
△λ
i=k*F
i （1）
Wherein k is predetermined coefficient, is an empirical value or test determination value.
Like this, by the catoptrical centre wavelength relative variation of optical fiber grating, detect the relative variable of pulling force or vibration.Fiber-optic grating sensor have quasi-distributed networking (tens to hundreds of point), Measurement Resolution high (0.01%FS), measurement range (0KN～300KN), working temperature range wide, be not subject to the advantages such as electromagnetic interference, withstanding corrosion, anti shock and vibration, antifatigue, long service life.
Wherein, described sensor location formula array can comprise multiple fiber-optic grating sensors, but described sensor location formula array also can only comprise a fiber-optic grating sensor.Described sensor location formula array can be to be connected in series, or is connected in parallel, and can be also mode in parallel and that series connection combines, thereby form certain topological network.For example, a sensor can be set on each detected object, the sensor in multiple measurands connects through certain mode.Particularly, described Fiber Bragg Grating Sensor Array can be connected in multiple branches light path, and each branch light path is connected with main cable by optical cable connecting box, by main cable, each shunt optical cable is connected on fiber Bragg grating (FBG) demodulator device.Wherein, by described fiber Bragg grating (FBG) demodulator, to fiber-optic grating sensor, by optical fiber cable, send laser signal.Usually, fiber Bragg grating (FBG) demodulator sends predetermined beam of laser, and this Shu Jiguang can comprise the laser of multiple predetermined wavelengths, can be also the laser with certain spectral width.According to predetermined set, the laser of each fiber-optic grating sensor reflection specific wavelength under normal condition;
And in the situation that grille guard or rail are subject to rock-fall impact, the reflection wavelength of fiber-optic grating sensor changes (also may cause fiber-optic grating sensor to lose efficacy under extreme case), therefore the optical maser wavelength that causes being reflected be there is to skew or disappear.Described fiber Bragg grating (FBG) demodulator is monitored the impact that the external environment condition of each fiber-optic grating sensor produces it by relatively reflecting back into the wavelength change of laser of this fiber Bragg grating (FBG) demodulator.
By railway anti-disaster stereo monitoring system of the present utility model, can collect and obtain about certain position or certain regional area information that for example certain service on buses or trains section occurs.Wherein, if optical fiber grating pulling force sensor wavelength moment increase after again sometime section in become negative value, illustrate that this sheet grille guard is subject to after rock-fall impact, grille guard scores a goal; If reflection swashs light wavelength, reach certain predetermined value, illustrate that the suffered pulling force of this sheet grille guard lower support rope has reached or exceeded preset value, this sheet grille guard has the falling rocks of bulk deposition, needs cleaning; If obtain the sharp light wavelength of certain optical fiber raster vibration sensor reflection, there is skew and become rapidly in a flash large at certain, this means that this place, sensor place has been subject to rock-fall impact; For example, if wavelength shift speed, illustrates that dangerous foreign matter (falling rocks) impact energy is larger; And if the laser that should be reflected by this sensor disappears, explanation is likely the sensor of having damaged this position.Now can utilize signal handling equipment to analyze the collected signal of above-mentioned dangerous matter sources signal capture system, thereby draw certain conclusion.
And because the propagation delay time of optical fiber almost can be left in the basket, if (one group) falling rocks has penetrated grille guard, so should (group) falling rocks collision on grille guard and rail and the signal producing will have certain intervals in time, and the waveform of signal will have obvious similarity, therefore by for example comparing in real time the signal on same position place grille guard and rail, can judge exactly generation and the scale thereof of falling rocks, avoid efficiently failing to report and reporting by mistake.
Signal handling equipment
According to principle of the present utility model, need signalization disposal system to analyze from above-mentioned railway anti-disaster stereo monitoring system and collect the signal obtaining.Preferably, a signal handling equipment can be analyzed the signal from numerous railway anti-disaster stereo monitoring systems.Wherein, signal handling equipment can be by wired mode such as optical cable is connected with railway anti-disaster stereo monitoring system.Alternatively, also can be connected with railway anti-disaster stereo monitoring system by wireless mode, to send and transmission of information, for example, by means of satellite network, realize the transmission of information.
Wherein, described signal handling equipment can be embodied as computer server particularly, and it comprises or connect corresponding data bank.According to the utility model, described signal handling equipment, comprises treater, as data processing and logic judgment unit, for what fiber Bragg grating (FBG) demodulator was sent, changes relevant signal analyze and judge with sensor wavelength.Pre-stored sensor or sensor array centre wavelength data in server, the corresponding relation of corresponding relation, center wavelength variation amount and vibratory magnitude between center wavelength variation amount and pulling force etc.
When flexible passive protection net is subject to impact load, supporting rope is increased by pulling force, and signal handling equipment receives center wavelength variation value.First, judge that described wavelength is the signal that belongs to which optical fiber grating pulling force sensor, in view of the amount of optical fiber grating pulling force sensor wavelength skew and the characteristic wavelength of each described sensor are comparatively speaking very little value, general is only the amount of or a few nanometer, and the wavelength after changing is general also can be good at differentiation with the sensor characteristics wavelength of adjacent band.Like this, determined that just can determine after characteristic wavelength signal is the signal of corresponding which fiber-optic grating sensor.And, after definite sensor, just can determine the installation site corresponding to grille guard lower support rope.Secondly, determine the value of thrust that the corresponding lower support rope of wavelength shift of sensor is subject to.Described in above, the pulling force that sensor senses is corresponding with the wavelength shift of sensor, also just can determine whether installation of sensors position occurs by the amount of monitoring wavelength shift conversely suitable to be measured stressed.Again, judge that lower support rope is subject to value of thrust to the falling rocks situation and the order of severity that should sheet grille guard occur.As the wavelength shift of sensor reduces again after increasing to rapidly sensor full scale, and be reduced to the situation also less than the numerical value before being offset, show that so flexible passive protection net scores a goal.Simultaneously, signal handling equipment also accepts to be arranged on the wavelength signals of optical fiber raster vibration sensor on rail, by analysis, determines that each wavelength signals relates to the variation of which optical fiber raster vibration sensor, related wavelength and whether vibratory magnitude, the described vibratory magnitude of corresponding representative reach hazard level (as shown in Figure 3).In addition, processor unit can also be arranged for definite: with respect to the time, whether the speed that described vibratory magnitude increases is greater than predetermined threshold value.
Wherein, the situation that also needs the judgement wavelength signals that should occur but to disappear: if be transferred to the signal that does not comprise or interrupts certain fiber-optic grating sensor of correspondence in the sensor signal of server, mean certain serious situation that occurred, such as this sensor is ruined.This need to carry out safe handling at once.If the blackout of all the sensors being connected by a point of optical cable is likely that this optical cable is damaged.According to the criterion of degree of risk rank, server can be summarized as " burst major disaster situation " or " optical cable damage " etc.The logic rules of judgement, can specifically be set by operating personal, or modify.
Warning
Warning, obtaining by analysis that disaster occurs or the information of hazard rating after, this information is sent to relevant personnel with the form of certain medium, the personnel, the maintainer that are responsible for railway security such as region, and higher level decision maker.
Wherein, report to the police and be divided into three ranks, be respectively:
One-level: grille guard monitoring, alarming, grille guard is impacted;
Secondary: grille guard alarm free, but falling rocks is pounded on rail and is entered in railway gauge;
Three grades: grille guard is reported to the police, falling rocks is pounded on rail and is entered in railway gauge simultaneously.
Wherein, grille guard monitoring, alarming is divided into again early warning and the two kinds of modes of reporting to the police.Wherein, A level (impact) and B level (serious impact) belong to modes of warning, and C level (destruction) belongs to alarm mode.Can be according to the feature of the peak signal of various sensors, shock duration and the multiple spot situation that is hit is comprehensively analyzed, and determines the threshold value of different energy levels.
Wherein, by the personnel that are responsible for security monitoring, according to the situation of warning feedback, can, by wired or wireless mode, such as SMS alarm, sound and light alarm, software interface warning etc., to the relevant personnel, warn or notice.
Wherein, in the utility model, used open good, the communications protocol that can expand, be convenient to three data transmission between system, and be conducive to set up unified disaster prevention system.
Like this, the railway anti-disaster stereoscopic monitoring warning that comprises above-mentioned each component part with respect to existing mode have advantages of accurately, safety, instant and low cost etc. are outstanding.This system also can be relevant with railroad track with other monitoring system compatible or parallel mutually, to realize comprehensive function.The utility model is generally applicable to the monitoring situation of collapse rock-fall.
Those examples that functional character of the present utility model is not limited to provide above, it is contemplated that the function of any kind in the utility model spirit like this.Although the utility model is illustrated in conjunction with preferred embodiment of the present utility model, be not intended to the utility model to be restricted to object lesson set forth herein.On the contrary, scope of the present utility model is only limited to described claim.
Claims (8)
1. a railway anti-disaster stereo monitoring system, comprising:
Fiber-optic grating sensor individuality or the distributive array being formed by it, and fiber Bragg grating (FBG) demodulator;
Wherein, described fiber Bragg grating (FBG) demodulator and described fiber-optic grating sensor or the array that consists of it are connected by signal transmission fiber; Described fiber-optic grating sensor comprises optical fiber grating pulling force sensor and optical fiber raster vibration sensor, described optical fiber grating pulling force sensor is arranged on the desired location of flexible passive protection net in advance, and described optical fiber raster vibration sensor is arranged on the desired location of rail.
2. railway anti-disaster stereo monitoring system according to claim 1, wherein, the optical fiber grating in described fiber-optic grating sensor is reflection-type or transmission-type.
3. railway anti-disaster stereo monitoring system according to claim 1, wherein, described fiber Bragg grating (FBG) demodulator comprises: laser beam emitting device, for generating laser; And input/output port, for Laser output is received to the laser returning to signal transmission fiber and from described signal transmission fiber; Described signal transmission fiber is connected with fiber-optic grating sensor.
4. according to the railway anti-disaster stereo monitoring system one of claim 1-3 Suo Shu, wherein, described fiber-optic grating sensor is arranged on grille guard lower support rope.
5. according to the railway anti-disaster stereo monitoring system one of claim 1-3 Suo Shu, wherein, described fiber-optic grating sensor is arranged on the downside of rail.
6. a railway anti-disaster stereoscopic monitoring warning, comprising:
According to the railway anti-disaster stereo monitoring system one of claim 1-5 Suo Shu;
With the signal handling equipment that described railway anti-disaster stereo monitoring system is connected, described signal handling equipment comprises signal receiving device and the processor unit being connected with described signal receiving device; And
The warning being connected with described signal handling equipment.
7. railway anti-disaster stereoscopic monitoring warning according to claim 6, wherein, described railway anti-disaster stereo monitoring system is connected by wired or wireless mode at a distance with described signal handling equipment.
8. stereoscopic monitoring warning according to claim 6, wherein, described railway anti-disaster stereoscopic monitoring warning comprises one or more described railway anti-disaster stereo monitoring systems.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015014264A1 (en) * | 2013-07-30 | 2015-02-05 | 同方威视技术股份有限公司 | Stereoscopic railway disaster prevention monitoring system, signal processing system, and monitoring and alarming system |
| CN107010087A (en) * | 2017-04-10 | 2017-08-04 | 同方威视技术股份有限公司 | High ferro system for monitoring intrusion of foreign bodies and method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015014264A1 (en) * | 2013-07-30 | 2015-02-05 | 同方威视技术股份有限公司 | Stereoscopic railway disaster prevention monitoring system, signal processing system, and monitoring and alarming system |
| CN104340239A (en) * | 2013-07-30 | 2015-02-11 | 同方威视技术股份有限公司 | Railway disaster-preventive three-dimensional monitoring and alarming system |
| CN104340239B (en) * | 2013-07-30 | 2017-01-18 | 同方威视技术股份有限公司 | Railway disaster-preventive three-dimensional monitoring and alarming system |
| CN107010087A (en) * | 2017-04-10 | 2017-08-04 | 同方威视技术股份有限公司 | High ferro system for monitoring intrusion of foreign bodies and method |
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