CN110065527A - A kind of railway signal occlusion auxiliary system based on fiber grating - Google Patents
A kind of railway signal occlusion auxiliary system based on fiber grating Download PDFInfo
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- CN110065527A CN110065527A CN201910217813.9A CN201910217813A CN110065527A CN 110065527 A CN110065527 A CN 110065527A CN 201910217813 A CN201910217813 A CN 201910217813A CN 110065527 A CN110065527 A CN 110065527A
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- bragg grating
- fiber bragg
- train
- optical signal
- vibration sensor
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- 238000004891 communication Methods 0.000 description 15
- 238000000034 method Methods 0.000 description 14
- 238000010586 diagram Methods 0.000 description 7
- 230000000903 blocking effect Effects 0.000 description 4
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L25/00—Recording or indicating positions or identities of vehicles or trains or setting of track apparatus
- B61L25/02—Indicating or recording positions or identities of vehicles or trains
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L27/00—Central railway traffic control systems; Trackside control; Communication systems specially adapted therefor
- B61L27/20—Trackside control of safe travel of vehicle or train, e.g. braking curve calculation
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L27/00—Central railway traffic control systems; Trackside control; Communication systems specially adapted therefor
- B61L27/20—Trackside control of safe travel of vehicle or train, e.g. braking curve calculation
- B61L2027/204—Trackside control of safe travel of vehicle or train, e.g. braking curve calculation using Communication-based Train Control [CBTC]
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Train Traffic Observation, Control, And Security (AREA)
Abstract
The present invention provides a kind of railway signal occlusion auxiliary system based on fiber grating, including at least one fiber bragg grating vibration sensor and vibrating sensing analyzer, between fiber bragg grating vibration sensor and fiber bragg grating vibration sensor is connected with vibrating sensing analyzer by optical fiber；Fiber bragg grating vibration sensor is installed on block section at a certain distance, is used for and demodulates to optical signal, obtains the response optical signal for extraneous vibration；Vibrating sensing analyzer is installed on the initial end of the block section, it is given apart from nearest fiber bragg grating vibration sensor for sending optical signal, and the optical signal that the response of reception optical fiber bragg grating vibration sensor returns, optical signal is analyzed, obtains specific location and train running speed of the train in single section.System of the invention can assist train block system to realize train in driving block section, it is ensured that traffic safety.
Description
Technical field
The present invention relates to Train Detection and Identification fields more particularly to a kind of railway signal based on fiber grating to occlude auxiliary
System.
Background technique
Automatic block system is the advanced train control system of intelligence, and current computer skill is adequately utilized in it
Art and the communication technology improve the operation level of railway, the transport capacity of train and conevying efficiency, guarantee the safety traffic of train.
Currently, China formulate CTCS4 grade train operation standard in train section occupied inspection pass through radio block center (RBC,
Radio Block Center), railway digital mobile communication system (GSM-R, GSM for Railways) and mobile unit come
It completes.The orbit occupancy that the range correction of train is arranged by section checks equipment to complete.Train is using movable block mould
Formula uses wireless communication technique to be positioned completely when running, and the tracking target point of train target range curve is the train that moves ahead
Tail portion (retains certain safe distance), and tracking interval is the smallest in all occlusion modes.
It is above-mentioned in the prior art, train is driving into some specific region sections or under the conditions of Special Geographic, such as over long distances
Situations such as tunnel, radio communication quality may be subjected to influence, exist simultaneously some emergency cases, such as lightning stroke, track circuit or
Situations such as equipment fault, impacts automatic block system.Since its circuit system volume is big, for system maintenance and
Debugging is difficult, influences the handling capacity of automatic block district, causes grave danger to traffic safety.
Therefore, wireless communication technique is only relied on it is difficult to ensure that carrying out precise positioning in specific road section and maintaining system just
Often operation, in this regard, needing a kind of railway signal occlusion auxiliary system.
Summary of the invention
The present invention provides a kind of, and the railway signal based on fiber grating occludes auxiliary system, in the limited feelings of wireless communication
Condition, such as long distance tunnel assist train block system to realize the driving occlusion of train, it is ensured that traffic safety.
To achieve the goals above, this invention takes following technical solutions.
A kind of railway signal occlusion auxiliary system based on fiber grating, comprising:
At least one fiber bragg grating vibration sensor and vibrating sensing analyzer, the fiber bragg grating
Between vibrating sensor and the fiber bragg grating vibration sensor is connected with vibrating sensing analyzer by optical fiber；
The fiber bragg grating vibration sensor is installed on block section at a certain distance, for receive due to
Vibration is passed through the optical signal of the fiber bragg grating vibration sensor and is demodulated to the optical signal, obtains for outer
The response optical signal of boundary's vibration；
The vibrating sensing analyzer is installed on the initial end of the block section, for send optical signal give its away from
From nearest fiber bragg grating vibration sensor, and the light that the response of reception optical fiber bragg grating vibration sensor returns is believed
Number, the optical signal is analyzed, obtains specific location and train running speed of the train in single section.
Preferably, vibrating sensing analyzer includes transmitting module, receiving module and signal processing module；
The transmitting module, including light source laser, for emitting the optical signal of certain frequency incessantly；
The receiving module, including optical detector are returned for real-time reception fiber bragg grating vibration sensor
Response optical signal；
The signal processing module, including modulation /demodulation instrument, the response light letter for being received to the receiving module
It number is analyzed, obtains specific location and train running speed of the train in single section.
Preferably, system is installed in the ground installation of train control system, occludes operation control system with in train
The operation of Collaborative Control block section.
Preferably, fiber bragg grating vibration sensor includes fiber bragg grating and a mass block, the light
Fine Bragg grating both ends are fixed, and the mass block is installed on stainless steel tube or glass with what the fiber bragg grating was fixed
Guan Zhong.
Preferably, mass block is stainless steel base powder metallurgy material.
It can be to along fiber optics transmission line by the railway signal occlusion auxiliary system based on fiber grating that aforementioned present invention provides
It is monitored on diameter up to the railway signal of thousands of rice even tens of kms, and high sensitivity, dynamic range are big, while being directed to nothing
Line communication module provides miscellaneous function when can not preferably meet communication quality demand, train control center realization is helped to transport train in real time
The control of row state ensures safe train operation.
The additional aspect of the present invention and advantage will be set forth in part in the description, these will become from the following description
Obviously, or practice through the invention is recognized.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, required use in being described below to embodiment
Attached drawing be briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for this
For the those of ordinary skill of field, without creative efforts, it can also be obtained according to these attached drawings others
Attached drawing.
Fig. 1 is the process flow of the method for managing resource in a kind of multimedia communications system that the embodiment of the present invention one provides
Figure；
Fig. 2 is the fiber bragg grating vibration sensor schematic of the present embodiment；
Fig. 3 is the train operation control system composition schematic diagram based on communication of embodiment；
Fig. 4 is that the train operation of embodiment occludes auxiliary system work flow diagram.
Specific embodiment
Embodiments of the present invention are described below in detail, the example of the embodiment is shown in the accompanying drawings, wherein from beginning
Same or similar element or element with the same or similar functions are indicated to same or similar label eventually.Below by ginseng
The embodiment for examining attached drawing description is exemplary, and for explaining only the invention, and is not construed as limiting the claims.
Those skilled in the art of the present technique are appreciated that unless expressly stated, singular " one " used herein, " one
It is a ", " described " and "the" may also comprise plural form.It is to be further understood that being arranged used in specification of the invention
Diction " comprising " refer to that there are the feature, integer, step, operation, element and/or component, but it is not excluded that in the presence of or addition
Other one or more features, integer, step, operation, element, component and/or their group.It should be understood that when we claim member
Part is " connected " or when " coupled " to another element, it can be directly connected or coupled to other elements, or there may also be
Intermediary element.In addition, " connection " used herein or " coupling " may include being wirelessly connected or coupling.Wording used herein
"and/or" includes one or more associated any cells for listing item and all combinations.
Those skilled in the art of the present technique are appreciated that unless otherwise defined, all terms used herein (including technology art
Language and scientific term) there is meaning identical with the general understanding of those of ordinary skill in fields of the present invention.Should also
Understand, those terms such as defined in the general dictionary, which should be understood that, to be had and the meaning in the context of the prior art
The consistent meaning of justice, and unless defined as here, it will not be explained in an idealized or overly formal meaning.
In order to facilitate understanding of embodiments of the present invention, it is done by taking several specific embodiments as an example below in conjunction with attached drawing further
Explanation, and each embodiment does not constitute the restriction to the embodiment of the present invention.
Fig. 1 is that a kind of railway signal based on fiber grating provided in this embodiment occludes auxiliary system schematic diagram, reference
Fig. 1, the system include:
3 fiber bragg grating (FBG, Fiber Bragg Grating) vibrating sensors and vibrating sensing analyzer,
Between FBG vibrating sensor and the fiber bragg grating vibration sensor and vibrating sensing analyzer pass through optical fiber and connect
It connects；
Fiber bragg grating vibration sensor is installed on block section at a certain distance, for receiving since vibration passes through
It crosses the optical signal of the fiber bragg grating vibration sensor and the optical signal is demodulated, obtain for extraneous vibration
Response optical signal；
Vibrating sensing analyzer is installed on the initial end of the block section, gives its distance recently for sending optical signal
Fiber bragg grating vibration sensor, and reception optical fiber bragg grating vibration sensor response return optical signal, it is right
The optical signal is analyzed, and obtains specific location and train running speed of the train in single section.
Set up origin site and purpose website.Vibrating sensing analyzer is placed in origin site, auxiliary is occluded in section
FBG vibrating sensor is disposed in equipment, issues certain wavelength from the transmitting module in the vibrating sensing analyzer of origin site
Optical signal, loopback enters the vibrating sensing analyzer of origin site after multiple FBG vibrating sensors, and received signal is carried out
Processing.Loopback arrow is lightray propagation direction in Fig. 1.When train passes through near FBG vibrating sensor, huge vibration
The optical signal of script will be modulated, the central wavelength or so of its each FBG is made to shift, the signal of offset is returned
Into vibrating sensing analyzer, vibrating sensing analyzer is by analysis fiber bragg grating center wavelength variation diagram it can be concluded that train has
Auxiliary wireless blocking system is realized to obtain the specific location and the speed of service of train in the FBG vibrating sensor section of body traveling
The function of system.
Preferably, vibrating sensing analyzer includes transmitting module, receiving module and signal processing module；
Transmitting module, including light source laser emit the optical signal of certain frequency after system is opened incessantly；
Receiving module, including optical detector, the response returned for real-time reception fiber bragg grating vibration sensor
Optical signal；
Signal processing module, including modulation /demodulation instrument, the response optical signal for receiving to the receiving module carry out
Analysis, obtains specific location and train running speed of the train in single section.
Railway signal occlusion auxiliary system provided in this embodiment based on fiber grating is installed on Train Detection and Identification system
In the ground installation of system, with in train occlusion operation control system Collaborative Control block section operation.Same track circuit, nothing
Line communication equipment co- controlling train operation block system, but wireless blocking system use priority is higher than provided in this embodiment
Railway signal based on fiber grating occludes auxiliary system.When train operation to plateau mountains and rivers area, that is, described occlusion
Section is damaged more serious situation in face of radio communication qualities such as long distance tunnels, can not accurately drive a vehicle when occluding, operation this
The railway signal based on fiber grating that embodiment provides occludes auxiliary system, and auxiliary wireless blocking system carries out occlusion control.
Further, Fig. 2 is the fiber bragg grating vibration sensor schematic of the present embodiment, referring to Fig. 2, the sensing
Device includes fiber bragg grating and a mass block, and the fiber bragg grating both ends are fixed, the mass block with it is described
Fiber bragg grating is fixed to be installed in stainless steel tube or glass tube.
Preferably, mass block is stainless steel base powder metallurgy material.
Fiber bragg grating vibration Fundamentals of Sensors according to an embodiment of the present invention pass fiber bragg grating vibration
Sensor is equivalent to spring-quality system, and since optical fiber both ends are fixed, and the quality of optical fiber completely may be used compared with the quality of mass block
, can be using optical fiber as no quality to ignore, only flexible spring.It therefore can be approximately the Chord vibration of simple substance point.
After experiencing extraneous vibration, optical signal can be modulated, to cause the center wavelength variation of fiber grating.And ground is set
After to being analyzed from the signal wavelength that the reception of multiple auxiliary systems comes, it can be deduced that specific position of the train in single section
It sets, while train running speed can also be more precisely calculated by the distance moved in the short time.
Fiber bragg grating vibration sensor is encapsulated into connector box, and is originated from vibrating sensing analyzer, every 2
Kilometer sets a packaged optical fiber raster vibration sensor, and the vibration of external environment directly affects the wavelength drift of fiber grating
It moves, by the driving states of demodulation analysis train at this time to the optical signal received, obtains driving license.
Fig. 3 is the train operation control system composition schematic diagram based on communication, includes each system concrete composition and sheet
The system of position of the system of embodiment in train operation control system, the present embodiment is located in ground installation, in specific item
Auxiliary Track circuit under part, the occlusion operation of radio block center co- controlling train, referring to Fig. 3, the present embodiment based on optical fiber
The railway signal of grating occludes auxiliary system.
Fig. 4 is that the train operation of the present embodiment occludes auxiliary system work flow diagram, referring to Fig. 4, in train driving process
In, the location information of oneself, including control actual speed and target calculating speed are sent by mobile unit first, is being travelled extremely
Specific road section, when such as long distance tunnel, since radio communication quality is affected, base of the embodiment of the present invention in ground installation at this time
Target point information and train position are obtained jointly in the railway signal occlusion auxiliary system auxiliary radio block center of fiber grating
Information carries out train license and calculates.Then various information is summarized to ground control equipment, to control train operation state.
With the device of the embodiment of the present invention carry out the resource management in multimedia communications system detailed process and aforementioned side
Method embodiment is similar, and details are not described herein again.
In conclusion the railway signal based on fiber grating of the embodiment of the present invention occludes auxiliary system, in particular surroundings
Or realize train occlusion operation control when such as long distance tunnel radio communication quality receives influence in special circumstances, realize auxiliary
The function of wireless blocking system control.
Those of ordinary skill in the art will appreciate that: attached drawing is the schematic diagram of one embodiment, module in attached drawing or
Process is not necessarily implemented necessary to the present invention.
As seen through the above description of the embodiments, those skilled in the art can be understood that the present invention can
It realizes by means of software and necessary general hardware platform.Based on this understanding, technical solution of the present invention essence
On in other words the part that contributes to existing technology can be embodied in the form of software products, the computer software product
It can store in storage medium, such as ROM/RAM, magnetic disk, CD, including some instructions are used so that a computer equipment
(can be personal computer, server or the network equipment etc.) executes the certain of each embodiment or embodiment of the invention
Method described in part.
All the embodiments in this specification are described in a progressive manner, same and similar portion between each embodiment
Dividing may refer to each other, and each embodiment focuses on the differences from other embodiments.Especially for device or
For system embodiment, since it is substantially similar to the method embodiment, so describing fairly simple, related place is referring to method
The part of embodiment illustrates.Apparatus and system embodiment described above is only schematical, wherein the conduct
The unit of separate part description may or may not be physically separated, component shown as a unit can be or
Person may not be physical unit, it can and it is in one place, or may be distributed over multiple network units.It can root
According to actual need that some or all of the modules therein is selected to achieve the purpose of the solution of this embodiment.Ordinary skill
Personnel can understand and implement without creative efforts.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
In the technical scope disclosed by the present invention, any changes or substitutions that can be easily thought of by anyone skilled in the art,
It should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with scope of protection of the claims
Subject to.
Claims (5)
1. a kind of railway signal based on fiber grating occludes auxiliary system characterized by comprising
At least one fiber bragg grating vibration sensor and vibrating sensing analyzer, the fiber bragg grating vibration
Between sensor and the fiber bragg grating vibration sensor is connected with vibrating sensing analyzer by optical fiber；
The fiber bragg grating vibration sensor is installed on block section at a certain distance, for receiving due to vibration
By the optical signal of the fiber bragg grating vibration sensor and the optical signal is demodulated, is obtained for extraneous vibration
Dynamic response optical signal；
The vibrating sensing analyzer is installed on the initial end of the block section, gives its distance most for sending optical signal
Close fiber bragg grating vibration sensor, and the optical signal that the response of reception optical fiber bragg grating vibration sensor returns,
The optical signal is analyzed, obtains specific location and train running speed of the train in single section.
2. system according to claim 1, which is characterized in that the vibrating sensing analyzer includes transmitting module, connects
Receive module and signal processing module；
The transmitting module, including light source laser, for emitting the optical signal of certain frequency incessantly；
The receiving module, including optical detector, the sound returned for real-time reception fiber bragg grating vibration sensor
Answer optical signal；
The signal processing module, including modulation /demodulation instrument, response optical signal for being received to the receiving module into
Row analysis, obtains specific location and train running speed of the train in single section.
3. system according to claim 1, which is characterized in that the ground that the system is installed on train control system is set
In standby, with in the operation of train occlusion operation control system Collaborative Control block section.
4. system according to claim 1, which is characterized in that the fiber bragg grating vibration sensor includes light
Fine Bragg grating and a mass block, the fiber bragg grating both ends are fixed, the mass block and the optical fiber Bradley
Lattice grating is fixed to be installed in stainless steel tube or glass tube.
5. system according to claim 4, which is characterized in that the mass block is stainless steel base powder metallurgy material.
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| CN201910217813.9A CN110065527A (en) | 2019-03-21 | 2019-03-21 | A kind of railway signal occlusion auxiliary system based on fiber grating |
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| CN201910217813.9A CN110065527A (en) | 2019-03-21 | 2019-03-21 | A kind of railway signal occlusion auxiliary system based on fiber grating |
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| CN110758475A (en) * | 2019-10-28 | 2020-02-07 | 武汉理工大学 | High-speed magnetic suspension train positioning and speed measuring system and method based on array fiber bragg grating sensing measurement |
| CN111751570A (en) * | 2020-06-18 | 2020-10-09 | 武汉理工大学 | Array fiber grating sensing system and method for speed measurement and positioning of magnetic suspension train |
| CN114537481A (en) * | 2022-03-16 | 2022-05-27 | 武汉理工大学 | Mobile closed train operation control method based on grating array |
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Application publication date: 20190730 |