CN110091893A - A kind of grating meter shaft track circuit system and working method - Google Patents
A kind of grating meter shaft track circuit system and working method Download PDFInfo
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- CN110091893A CN110091893A CN201910349810.0A CN201910349810A CN110091893A CN 110091893 A CN110091893 A CN 110091893A CN 201910349810 A CN201910349810 A CN 201910349810A CN 110091893 A CN110091893 A CN 110091893A
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- relay
- meter shaft
- track circuit
- track
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- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000001514 detection method Methods 0.000 claims abstract description 33
- 230000009471 action Effects 0.000 claims abstract description 8
- 238000007689 inspection Methods 0.000 claims abstract description 8
- 238000012360 testing method Methods 0.000 claims abstract description 4
- 239000013307 optical fiber Substances 0.000 claims description 34
- 230000003287 optical effect Effects 0.000 claims description 12
- 230000002159 abnormal effect Effects 0.000 claims description 10
- 230000001939 inductive effect Effects 0.000 claims description 9
- 230000005540 biological transmission Effects 0.000 claims description 6
- 230000008054 signal transmission Effects 0.000 claims description 6
- 238000012545 processing Methods 0.000 claims description 3
- 238000012550 audit Methods 0.000 abstract description 5
- 230000011664 signaling Effects 0.000 abstract description 3
- 230000006870 function Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000000502 dialysis Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
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- 230000009131 signaling function Effects 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L1/00—Devices along the route controlled by interaction with the vehicle or train
- B61L1/16—Devices for counting axles; Devices for counting vehicles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L23/00—Control, warning or like safety means along the route or between 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
- B61L27/50—Trackside diagnosis or maintenance, e.g. software upgrades
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Automation & Control Theory (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- General Health & Medical Sciences (AREA)
- Train Traffic Observation, Control, And Security (AREA)
Abstract
The invention discloses a kind of grating meter shaft track circuit system and working methods, and the system comprises grating axis-counting device, ZPW-2000A track circuit and detection modules；The grating axis-counting device, ZPW-2000A track circuit are for detection module described in co- controlling；The detection module is used to occupy track section or broken rail information is transferred to train control center.The working method includes: to carry out track section using grating axis-counting device to occupy inspection；Broken rail detection is carried out using ZPW-2000A track circuit；The action state of grating axis-counting device and ZPW-2000A track circuit co- controlling detection module；Train control center acquisition testing module action state obtains track condition.The present invention is provided by grating axis-counting device occupies audit function, and ZPW-2000A track circuit provides signaling and Broken rail detection function, the two are used cooperatively, and displays one's respective advantages, can promote safety of railway traffic.
Description
Technical field
The invention belongs to field of track traffic, in particular to a kind of grating meter shaft track circuit system and working method.
Background technique
ZPW-2000A track circuit is at home and abroad widely used, and (Fig. 7 shows the ZPW-2000A track of the prior art
The interface diagram of circuit and train control center), but occur causing track since Wheel Rail Contact resistance is uncertain in use
The problems such as circuit loses branch inspection, railway roadbed resistance is sewed greatly beyond track circuit applications condition, will affect accounting for for track circuit
It is impacted with audit function, and then to the application of track circuit, brings security risk to railway operation, influence conevying efficiency.
Currently, for solving shunting badness section in standing, using half wave track circuit (the shift frequency pulse of ZPW-2000A shift frequency
Track circuit is a kind of track circuit that pulse signal is superimposed with frequency-shift signaling), this track circuit is not suitable for railway roadbed resistance
Situations such as sewing greatly beyond track circuit applications condition；The big area for exceeding track circuit applications condition is sewed for railway roadbed resistance
Section is carried out section length cutting, is cut into 3 section lengths using cutting track circuit section length, such as original 1200m section
For the track circuit of 400m, but existing line is transformed, needs to destroy the compensating electric capacity on original track, rearrange peace
Dress, engineering construction amount is larger, in addition, also needing additionally to increase track circuit equipment, equipment cost is higher.
Summary of the invention
In view of the above-mentioned problems, the present invention provides a kind of grating meter shaft track circuit system and working methods.
A kind of grating meter shaft track circuit system, the system comprises grating axis-counting device, ZPW-2000A track circuit and
Detection module；
The grating axis-counting device, ZPW-2000A track circuit are for detection module described in co- controlling；
The detection module is used to occupy track section or broken rail information is transferred to train control center.
Further, the grating axis-counting device includes meter shaft relay, and the meter shaft relay is controlled in institute
State grating axis-counting device detect track section occupy when, fall；
The ZPW-2000A track circuit includes track circuit relay, and the track circuit relay is controlled to
When the ZPW-2000A track circuit detects track section broken rail, fall；
The detection module includes track relay；
The grating axis-counting device, ZPW-2000A track circuit include: for detection module described in co- controlling
When at least one in the track circuit relay and the meter shaft relay is fallen, the track relay is controlled
Device is fallen；
When the track circuit relay and the meter shaft relay all pick up, controls the track relay and pick up；
The train control center acquires the track relay state to judge track section occupancy or broken rail situation.
Further, the track circuit relay, the meter shaft relay, the track relay are connected in series.
Further, the grating axis-counting device further includes grating axle count sensor, optical fiber cable, grating demodulation instrument, meter
Axis host；
The grating demodulation instrument is for acquiring at least one grating axle count sensor signal and being demodulated into axle information；
The meter shaft host carries out meter shaft counting, and according to the meter shaft count results for receiving the axle information
Control the meter shaft actuating of relay.
Further, the ZPW-2000A track circuit further includes track circuit transmitter, track circuit receiver, institute
It states track circuit receiver and the track circuit relay is electrically connected.
Further, the system comprises one or more sections, the grating axle count sensor is arranged each described
The both ends of section share a grating axle count sensor, the grating at the section both ends between the adjacent section
Axle count sensor is connected by the optical fiber cable.
Further, armouring is equipped on the outside of the optical fiber cable, the adjacent optical fiber cable passes through special optical cable splice tray
Connection.
Further, it is all provided in each grating axle count sensor there are three optical fiber Bragg raster, described in two of them
Optical fiber Bragg raster is for judging that vehicle heading, a remaining optical fiber Bragg raster are used for other two described light
The temperature-compensating of fiber Bragg grating.
A kind of grating meter shaft track circuit working method, the working method include:
Track section is carried out using grating axis-counting device and occupies inspection；
Broken rail detection is carried out using ZPW-2000A track circuit；
The action state of grating axis-counting device and ZPW-2000A track circuit co- controlling detection module；
Train control center acquisition testing module action state obtains track condition.
Further, the grating axis-counting device includes grating axle count sensor, optical fiber cable, grating demodulation instrument, meter shaft
Host and meter shaft relay, in which:
The grating axle count sensor acquires inductive signal when train wheel passes through, and the inductive signal is passed through light
Fine optical cable passes to grating demodulation instrument；
It controls the grating demodulation instrument and processing acquisition meter shaft quantity and grating axle count sensor state is carried out to inductive signal,
And send meter shaft quantity and grating axle count sensor state to meter shaft host；
It controls the meter shaft host and compares each segment entry, outlet meter shaft quantity:
Comparison result is consistent, and the meter shaft relay holding for controlling respective segments picks up state, indicates the section free time；
Comparison result is inconsistent, and the meter shaft relay for controlling respective segments is fallen, and indicates that the section occupies；
When receiving the grating axle count sensor abnormal state information sent from grating demodulation instrument, corresponding meter shaft relay is controlled
Device is fallen, and indicates that the section occupies.
Further, the grating axle count sensor abnormal state information include grating axle count sensor loosen or fall off,
Optical signal transmission Channel depletion is excessive or transmission channel disconnects.
Further, the ZPW-2000A track circuit includes track circuit relay, and the detection module includes track
The movement of relay, the meter shaft relay and track circuit relay determines the movement of track relay, the track relay
The movement of device includes:
At least one falls for the meter shaft relay and track circuit relay, and track relay is fallen, and indicates track
Occupancy or broken rail；
The meter shaft relay and track circuit relay all pick up, and track relay picks up, and indicate track clear and just
Often.
The present invention passes through grating axis-counting device and provides occupancy audit function, and ZPW-2000A track circuit provides signaling and breaks
Rail audit function, since grating axis-counting device is not influenced by rail situation, and railway roadbed electricity uncertain for Wheel Rail Contact resistance
Drain Resistance, which lets out the big section beyond track circuit applications condition, can also carry out occupancy and abnormal examination.Therefore, the two is used cooperatively,
It displays one's respective advantages, safety of railway traffic can be promoted.Other features and advantages of the present invention will be explained in the following description
It states, also, partly as will become apparent from the description, or understand through the implementation of the invention.The purpose of the present invention and
Other advantages can be achieved and obtained by structure pointed in the specification, claims and drawings.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is this hair
Bright some embodiments for those of ordinary skill in the art without creative efforts, can be with root
Other attached drawings are obtained according to these attached drawings.
Fig. 1 shows grating meter shaft track circuit system overall schematic according to an embodiment of the present invention；
Fig. 2 shows the relay circuit schematic diagrames of grating meter shaft track circuit system according to an embodiment of the present invention；
Fig. 3 shows the interface diagram of grating meter shaft track circuit and train control center according to an embodiment of the present invention；
Fig. 4 shows grating meter shaft track circuit system according to an embodiment of the present invention and occupies inspection working principle signal
Figure；
Fig. 5 shows the measured curve figure that a train according to an embodiment of the present invention passes through grating axle count sensor；
Fig. 6 shows security platform unit block and relay group lock schematic diagram according to an embodiment of the present invention；
Fig. 7 shows the interface diagram of ZPW-2000A track circuit and train control center according to prior art.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical solution in the embodiment of the present invention clearly and completely illustrated, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
Every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
The present invention provides a kind of grating meter shaft track circuit system and working methods.
The system comprises grating axis-counting device, ZPW-2000A track circuit and detection modules；The grating meter shaft is set
Standby, ZPW-2000A track circuit is for detection module described in co- controlling；The grating axis-counting device includes meter shaft relay
(JGJ), the meter shaft relay is controlled to fall when the grating axis-counting device detects that track section occupies；By
It is not influenced by rail railway roadbed and corrosion situation in grating axis-counting device, therefore its occupancy audit function will not be by steel track
The influence of bed and corrosion, the ZPW-2000A track circuit includes track circuit relay (DGJ), the track circuit relay
Device is controlled to fall when the ZPW-2000A track circuit detects track section broken rail；Specifically, ZPW-2000A
Track circuit transmits control information by rail circuit, to mobile unit, is become by electric state caused by the electrical dialysis of rail
Change and realizes rail integrity checking (i.e. Broken rail detection).Wherein the grating axis-counting device further includes grating axle count sensor, light
Fine optical cable, grating demodulation instrument, meter shaft host, the grating demodulation instrument is for acquiring at least one grating axle count sensor signal simultaneously
It is demodulated into axle information, the meter shaft host carries out meter shaft counting, and according to the meter shaft meter for receiving the axle information
Number results control the meter shaft actuating of relay, and by the power supply panel of appropriate power to meter shaft host, grating demodulation instrument and
Meter shaft relay is powered.The detection module is used to occupy track section or broken rail information is transferred to train control center.Institute
Stating ZPW-2000A track circuit further includes track circuit transmitter, track circuit receiver, the track circuit receiver and institute
The electric connection of track circuit relay is stated, the detection module includes track relay (GJ), the track circuit relay, institute
State meter shaft relay, the track relay is connected in series.The grating axis-counting device, ZPW-2000A track circuit are for altogether
When the same control detection module includes: that at least one in the track circuit relay and the meter shaft relay is fallen,
The track relay is controlled to fall；When the track circuit relay and the meter shaft relay all pick up, the rail is controlled
Road relay energized；The train control center acquires the track relay state to judge track section occupancy or broken rail situation.
The system comprises one or more sections, the both ends of each section, adjacent institute is arranged in the grating axle count sensor
It states and shares a grating axle count sensor between section, the grating axle count sensor at the section both ends passes through described
Optical fiber cable connection, the optical fiber cable have cable duct laying along trackside, are equipped with armouring, adjacent institute on the outside of the optical fiber cable
Optical fiber cable is stated to connect by special optical cable splice tray, the grating axle count sensor by special mould clamp be mounted on two sleepers it
Between rail on, be all provided in each grating axle count sensor there are three optical fiber Bragg raster, optical fiber described in two of them
Bragg grating is for judging that vehicle heading, a remaining optical fiber Bragg raster are used for other two described optical fiber
The temperature-compensating of Bragg grating.
Illustratively, grating meter shaft track circuit system overall schematic as shown in figure 1 shows grating meter shaft in figure
Two sections in track circuit system, but two are not limited to, it is illustrated by taking this two sections as an example, two section both ends point
Not She You grating axle count sensor A, grating axle count sensor B, grating axle count sensor C, wherein grating axle count sensor B be phase
The shared grating axle count sensor of adjacent area section, grating axle count sensor A, grating axle count sensor B and grating axle count sensor C pass through
Optical fiber cable is connected to grating demodulation instrument, and optical fiber cable has cable duct laying along trackside, to guarantee optical fiber in application process
Reliability, armouring is increased to optical fiber cable, adjacent optical fiber cable is attached using special optical cable splice tray, grating demodulation
Instrument is connected to meter shaft host by CAN bus or Ethernet, and meter shaft host and meter shaft relay (JGJ) are electrically connected.Grating meter
Axle sensor A and grating axle count sensor B are parsed by grating demodulation instrument, and the data after parsing are then transmitted to meter shaft host,
The JGJ1 of the section is controlled by meter shaft host；Grating axle count sensor B and grating axle count sensor C passes through grating demodulation instrument solution
Then data after parsing are transmitted to meter shaft host, the JGJ2 of the section are controlled by meter shaft host by analysis.Each section is one group corresponding
Track circuit equipment, every group of track circuit equipment include trackside equipment and indoor equipment, and trackside equipment includes two PT (tuning
Matching unit) an and SVA (air core coil), PT and SVA passes through cable and track is electrically connected；Indoor equipment includes track
Circuit transmitter, track circuit receiver, lightning protection analog network, attenuator, track circuit relay.One of PT is by anti-
Thunder analog network and track circuit transmitter are electrically connected, another PT is by lightning protection analog network and attenuator and track circuit
Receiver is electrically connected, and track circuit receiver and track circuit relay are electrically connected.
The relay electricity of meter shaft relay, track circuit relay and track relay composition grating meter shaft track circuit system
Road, as shown in Fig. 2, meter shaft relay is connect with track relay again after connecting with track circuit relay, KZ and KF are in figure
Relay power.Train control center acquires the track relay state of grating meter shaft track circuit system, as shown in figure 3, meter
Axis host controls the state of meter shaft relay, and track circuit receiver controls rail by receiving the signal of track circuit transmitter
The state of road circuit relay, the status signal of meter shaft relay and the status signal of track circuit relay are transmitted to track together
Relay, to control the state of track relay, train control center reads the current status signal of track relay and can obtain
Know track condition.
ZPW-2000A track circuit adjustment reference table is redesigned, according to the adjustment reference of ZPW-2000A track circuit
Table readjusts track circuit transmitter, track circuit receiver level grade, wherein the adjustment reference of ZPW-2000A track circuit
Table should meet the following conditions:
1, guarantee that cab signal electric current is sufficiently large, meet signaling function；
2, guarantee that ZPW-2000A track circuit under the conditions of minimum railway roadbed, red band does not occur；
3, guarantee that ZPW-2000A track circuit within the scope of technical conditions, has Broken rail detection function.
According to " railway signal maintenance regulation " technical standard I:
1, shunted state of a track circuit is under the conditions of least favorable, in track any one place's rail level standard shunt lead branch,
Short circuit current is not less than shown in following table:
2, for track circuit in the state of adjustment, " rail goes out 1 " voltage should be not less than 240mV, and " rail goes out 2 " voltage should be not less than
100mV, baby track condition of acceptance voltage are not less than 20V, and track relay reliably picks up.
3, track circuit should be able to realize whole Broken rail detection.When main orbit broken rail, " rail goes out 1 " voltage is not more than 140mV, rail
Road relay is reliably fallen.When baby track broken rail, " rail goes out 2 " voltage is not more than 63mV, and track relay is reliably fallen.
Illustratively, it is further illustrated by taking one of section as an example, as shown in figure 4, installing grating meter in segment entry
Grating axle count sensor B is installed in axle sensor A, outlet port, by comparing the number of axle of two axle-counting points record, judges section sky
Spare time/occupied state.Detailed process are as follows: train drives into the section for being equipped with grating axle count sensor, grating axle count sensor A perception
The effect that rail is generated to wheel, signal of the grating demodulation instrument real-time reception from grating axle count sensor A, while to meter shaft
Host sends information, and meter shaft host starts counting, in combination with the directional information of train driving, if driving direction with enter section
Direction is consistent, then increases the number of axle at the end A, the number of axle that is on the contrary then reducing the end A；The meter shaft of grating axle count sensor B is also in accordance with above-mentioned
Principle.By comparing the number of axle at the both ends A, B in real time, if unequal, section Seize ACK message is sent, meter shaft relay is fallen；If
It is equal, section idle signal is issued, meter shaft relay energized is made.
Wherein, grating axle count sensor uses fiber grating sensing technology, and the sensing element of grating axle count sensor is adopted
It is optical fiber Bragg raster (FBG), a grating axle count sensor includes 3 FBG, and one of FBG is mended for temperature
It repays, other two FBG is for judging that This train is bound for XXX.Grating axle count sensor is mounted between two sleepers with special mould clamp
Rail on, special mould clamp fits closely grating axle count sensor with rail in installation process, and installation clamping process generates pre-
Clamp force can make grating generate strain, and the central wavelength of grating changes therewith, once generation loosens or dropping situations, pretightning force subtract
Small, grating deformation restores, and the wavelength of grating can also generate variation, therefore by judging that pretightning force can be realized grating meter shaft sensing
The loosening of device or the inspection that falls off.When there is train by this section of rail, rail is acted on by wheel and generates deformation, utilizes grating meter shaft
The strain sensor character of sensor can be detected out the active force that wheel acts on this section of rail, be illustrated in figure 5 a certain column
Vehicle passes through the measured curve that grating axle count sensor generates, it can be seen that the signal has apparent extreme point, by by the letter
Number carry out shaping be converted into time series pulse signals, by counting to pulse signal number, wheel shaft number can be obtained.Together
When, can also occur the sequence of peak value by 1#FBG and 2#FBG to judge that This train is bound for XXX, when 1#FBG goes out prior to 2#FBG
Existing peak value illustrates that train is directed toward the direction 2#FBG along 1#FBG and runs, otherwise is directed toward the direction 1#FBG along 2#FBG and runs.
Grating demodulation instrument is disposed within, and to guarantee data reliability, grating demodulation instrument transmits data to meter shaft host, answers
Use secure communication protocols.Carried out data transmission between grating demodulation instrument and meter shaft host using CAN bus or Ethernet, is utilized
Indoor power supply screen is powered security platform unit block, and wherein security platform unit block includes grating demodulation instrument and meter shaft host, more
A meter shaft relay forms relay group lock, and meter shaft host and meter shaft relay are electrically connected, as shown in Figure 6.Relay group lock
It can be placed in existing integral cabinet, can also be placed in newly-increased integral cabinet, JWXC-1700 type relay can be used in meter shaft relay,
Other applicable model relays can be used.
The meter shaft quantity and grating axle count sensor state of meter shaft host real-time reception grating demodulation instrument, meter shaft host ratio
To each segment entry, outlet meter shaft quantity, comparison result is consistent, and control meter shaft relay holding picks up state；Comparison result
Inconsistent, then the meter shaft relay for controlling respective segments is fallen.When receive from grating demodulation instrument send meter shaft abnormal state
Information controls corresponding meter shaft relay and falls, is specifically expressed as follows:
When segment entry with outlet grating axle count sensor meter shaft quantity it is equal, meter shaft relay energized；
When segment entry and outlet grating axle count sensor meter shaft quantity are unequal, meter shaft relay is fallen；
When segment entry or outlet grating axle count sensor exception, meter shaft relay is fallen, such as grating axle count sensor
Appearance loosens or falls off；
Other abnormal conditions, meter shaft relay are fallen, if optical signal transmission Channel depletion is excessive or transmission channel disconnects, this
The light signal strength that abnormal conditions can be received by grating demodulation instrument is judged: when grating demodulation instrument does not receive light letter
Number, illustrate that there is disconnection in optical signal transmission channel；When the light signal strength reduction that grating demodulation instrument receives, illustrate that transmission channel goes out
The case where now loss increases.
Wherein meter shaft host has the function of Conditional reset and pre-reset.
As shown in Fig. 2, track relay falls (similar when track circuit relay and meter shaft relay have one to fall
Disconnected in switch), section is expressed as occupancy or broken rail；When meter shaft relay and track circuit relay pick up (similar to opening
Close), track relay picks up, and section is expressed as the free time.Therefore, as shown in figure 3, train control center only needs acquisition trajectory relay
The state of device can learn that the section is in occupancy or broken rail state or idle state.
In order to preferably illustrate the present embodiment grating meter shaft track circuit system, a kind of grating meter shaft track circuit is provided
Working method, the working method include:
Track section is carried out using grating axis-counting device and occupies inspection.Specifically, the grating axis-counting device includes grating
Axle count sensor, optical fiber cable, grating demodulation instrument, meter shaft host and meter shaft relay, specifically,
The grating axle count sensor acquires inductive signal when train wheel passes through, and the inductive signal is passed through light
Fine optical cable passes to grating demodulation instrument；
It controls the grating demodulation instrument and processing acquisition meter shaft quantity and grating axle count sensor state is carried out to inductive signal,
And send meter shaft quantity and grating axle count sensor state to meter shaft host；
It controls the meter shaft host and compares each segment entry, outlet meter shaft quantity:
Comparison result is consistent, and the meter shaft relay holding for controlling respective segments picks up state, indicates the section free time；
Comparison result is inconsistent, and the meter shaft relay for controlling respective segments is fallen, and indicates that the section occupies；
When receiving the grating axle count sensor abnormal state information sent from grating demodulation instrument, corresponding meter shaft relay is controlled
Device is fallen, and indicates that the section occupies.The grating axle count sensor abnormal state information include grating axle count sensor loosen or
It falls off, optical signal transmission Channel depletion is excessive or transmission channel disconnects.
Broken rail detection is carried out using ZPW-2000A track circuit.Specifically, the ZPW-2000A track circuit includes rail
The movement of road circuit relay, the track circuit relay includes:
Track circuit relay energized indicates that track is normal；
Track circuit relay is fallen, and indicates that broken rail occurs in track.
The action state of grating axis-counting device and ZPW-2000A track circuit co- controlling detection module.Specifically, described
Detection module includes track relay, and the movement of the meter shaft relay and track circuit relay determines the dynamic of track relay
Make, the movement of the track relay includes:
At least one falls for the meter shaft relay and track circuit relay, and track relay is fallen, and indicates track
Occupancy or broken rail；
The meter shaft relay and track circuit relay all pick up, and track relay picks up, and indicate track clear and just
Often.
Train control center acquisition testing module action state obtains track condition, and train control center passes through acquisition trajectory in this example
Actuating of relay state obtains track condition.
The present invention is not only suitable for the uncertain section for causing track circuit to lose branch inspection of Wheel Rail Contact resistance and (is commonly called as point
Road is bad), and be suitable for railway roadbed resistance and sew the big section for exceeding track circuit applications condition, it is not necessarily to complete increase track circuit
System, it is only necessary to modify ZPW-2000A track circuit adjustment reference table, increase grating axis-counting device, and grating axis-counting device
With high temperature resistant, small in size, light-weight, electromagnetism interference, adapts to adverse circumstances, do not influenced (such as greasy dirt, rust by rail condition
Erosion, Ballast leakage are big etc.), it is much lower compared to copper core cable cost etc. excellent using optical fiber cable without lightning protection component, signal transmission
Gesture.
Although the present invention is described in detail referring to the foregoing embodiments, those skilled in the art should manage
Solution: it is still possible to modify the technical solutions described in the foregoing embodiments, or to part of technical characteristic into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The spirit and scope of scheme.
Claims (12)
1. a kind of grating meter shaft track circuit system, which is characterized in that the system comprises grating axis-counting devices, ZPW-2000A
Track circuit and detection module；
The grating axis-counting device, ZPW-2000A track circuit are for detection module described in co- controlling；
The detection module is used to occupy track section or broken rail information is transferred to train control center.
2. a kind of grating meter shaft track circuit system according to claim 1, which is characterized in that the grating axis-counting device
Including meter shaft relay, the meter shaft relay is controlled to detect that track section occupies in the grating axis-counting device
When, it falls；
The ZPW-2000A track circuit includes track circuit relay, and the track circuit relay is controlled in institute
When stating ZPW-2000A track circuit and detecting track section broken rail, fall；
The detection module includes track relay；
The grating axis-counting device, ZPW-2000A track circuit include: for detection module described in co- controlling
When at least one in the track circuit relay and the meter shaft relay is fallen, controls the track relay and fall
Under；
When the track circuit relay and the meter shaft relay all pick up, controls the track relay and pick up；
The train control center acquires the track relay state to judge track section occupancy or broken rail situation.
3. a kind of grating meter shaft track circuit system according to claim 2, which is characterized in that the track circuit relay
Device, the meter shaft relay, the track relay are connected in series.
4. a kind of grating meter shaft track circuit system according to claim 2, which is characterized in that the grating axis-counting device
It further include grating axle count sensor, optical fiber cable, grating demodulation instrument, meter shaft host；
The grating demodulation instrument is for acquiring at least one grating axle count sensor signal and being demodulated into axle information；
The meter shaft host carries out meter shaft counting, and control according to the meter shaft count results for receiving the axle information
The meter shaft actuating of relay.
5. a kind of grating meter shaft track circuit system according to claim 2, which is characterized in that the ZPW-2000A rail
Road circuit further includes track circuit transmitter, track circuit receiver, the track circuit receiver and the track circuit after
Electric appliance is electrically connected.
6. -5 any a kind of grating meter shaft track circuit system according to claim 1, which is characterized in that the system packet
Include one or more sections, the grating axle count sensor is arranged in the both ends of each section, between the adjacent section
A grating axle count sensor is shared, the grating axle count sensor at the section both ends is connected by the optical fiber cable
It connects.
7. a kind of grating meter shaft track circuit system according to claim 6, which is characterized in that on the outside of the optical fiber cable
Equipped with armouring, the adjacent optical fiber cable is connected by special optical cable splice tray.
8. a kind of grating meter shaft track circuit system according to claim 7, which is characterized in that each grating meter shaft
It is all provided in sensor there are three optical fiber Bragg raster, optical fiber Bragg raster described in two of them is for judging vehicle driving side
To a remaining optical fiber Bragg raster is used for the temperature-compensating of other two optical fiber Bragg raster.
9. a kind of grating meter shaft track circuit working method, which is characterized in that the working method includes:
Track section is carried out using grating axis-counting device and occupies inspection；
Broken rail detection is carried out using ZPW-2000A track circuit；
The action state of grating axis-counting device and ZPW-2000A track circuit co- controlling detection module；
Train control center acquisition testing module action state obtains track condition.
10. a kind of grating meter shaft track circuit working method according to claim 9, which is characterized in that the grating meter
Axis equipment includes grating axle count sensor, optical fiber cable, grating demodulation instrument, meter shaft host and meter shaft relay, in which:
The grating axle count sensor acquires inductive signal when train wheel passes through, and the inductive signal is passed through optical fiber light
Cable passes to grating demodulation instrument；
It controls the grating demodulation instrument and processing acquisition meter shaft quantity and grating axle count sensor state is carried out to inductive signal, and will
Meter shaft quantity and grating axle count sensor state send meter shaft host to；
It controls the meter shaft host and compares each segment entry, outlet meter shaft quantity:
Comparison result is consistent, and the meter shaft relay holding for controlling respective segments picks up state, indicates the section free time；
Comparison result is inconsistent, and the meter shaft relay for controlling respective segments is fallen, and indicates that the section occupies；
When receiving the grating axle count sensor abnormal state information sent from grating demodulation instrument, controls corresponding meter shaft relay and fall
Under, indicate that the section occupies.
11. a kind of grating meter shaft track circuit working method according to claim 10, which is characterized in that the grating meter
Axle sensor abnormal state information includes that grating axle count sensor loosens or falls off, optical signal transmission Channel depletion is excessive or transmission
Channel disconnects.
12. a kind of grating meter shaft track circuit working method according to claim 11, which is characterized in that the ZPW-
2000A track circuit includes track circuit relay, and the detection module includes track relay, the meter shaft relay and rail
The movement of road circuit relay determines that the movement of track relay, the movement of the track relay include:
At least one falls for the meter shaft relay and track circuit relay, and track relay is fallen, and indicates orbit occupancy
Or broken rail；
The meter shaft relay and track circuit relay all pick up, and track relay picks up, and expression track clear is simultaneously normal.
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| CN201910349810.0A CN110091893A (en) | 2019-04-28 | 2019-04-28 | A kind of grating meter shaft track circuit system and working method |
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| CN110823264A (en) * | 2019-11-26 | 2020-02-21 | 北京全路通信信号研究设计院集团有限公司 | Continuous track occupation inspection system based on fiber grating sensing technology |
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| CN113335338A (en) * | 2021-06-30 | 2021-09-03 | 北京全路通信信号研究设计院集团有限公司 | Wheel-rail coupling vertical force detection device for axle counting and axle counting method |
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| CN114715218A (en) * | 2022-05-17 | 2022-07-08 | 北京全路通信信号研究设计院集团有限公司 | Fiber grating sensor axis counting method, system and equipment |
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