CN200981565Y - Device for detecting railway orbit occupation condition - Google Patents
Device for detecting railway orbit occupation condition Download PDFInfo
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- CN200981565Y CN200981565Y CN 200620098631 CN200620098631U CN200981565Y CN 200981565 Y CN200981565 Y CN 200981565Y CN 200620098631 CN200620098631 CN 200620098631 CN 200620098631 U CN200620098631 U CN 200620098631U CN 200981565 Y CN200981565 Y CN 200981565Y
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- grating pressure
- bragg grating
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- optical fibre
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- 238000007689 inspection Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 7
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Abstract
The utility model relates to a railroad rail occupying-condition test device. The railroad rail occupying-condition test device comprises optical fibre grating pressure sensors, transmission optical cables, an optical fibre grating modem and a computer. The utility model is characterized in that the same rail track of each railway station/section is provided with two or more optical fibre grating pressure sensor groups at a distance, and each optical fibre grating pressure sensor group is formed by two to five optical fibre grating pressure sensors, the optical fibre grating pressure sensors are provided in the installing holes on the rail and are fixedly connected with the rail, the optical fibre grating pressure sensors of the same optical fibre grating pressure sensor group are connected with the input terminal of the optical fibre grating modem through the transmission optical cables after mutual cascade connection, and the output terminal of the optical fibre grating modem is connected with the serial ports of the computer through signal lines. The utility model has the characteristics of high accuracy and good stability.
Description
Technical field
The utility model relates to a kind of occupation of railway track condition testing fixture.
Background technology
The condition that the takies inspection of track will reflect that accurately track is in idle condition or is taking cond by a kind of equipment exactly.Track circuit, microcomputer axle-counting equipment are mainly adopted in the inspection of present domestic orbit occupancy condition condition.
Track circuit is as lead two one steel rails of a bit of railway line, rail gap therebetween couples together with crossing zinc-iron line (being called bond wire), the rail gap at two ends is loaded onto insulator (being called rail insulation), one end send electricity, and the other end is subjected to electricity, has so just formed the track section circuit, it constitutes as shown in Figure 6 (among the figure: the 13-track insulation, the 14-bond wire, 15-track, 16-seam).At ordinary times, when track circuit section did not have car, electric current was constituted C/LOOP, thereby the GJ excitation is picked up by flow through the in the direction of arrows coil of track relay GJ of central control compartment, its front contact closure, and point gives a green light, and represents this track section free time.When car is arranged, because the wheel of car adds that to resistance its rolling resistance ratio track relay coil resistance is much smaller, so track circuit is by short circuit; At this moment the flow through electric current of track relay coil is just remaining seldom, so the relay front contact disconnects, point sends out a warning, and represents that this section circuit has car.
1), owing to adopt power supply mode at present the track circuit that adopts has following deficiency:, electromagnetic interference and thunder and lightning disturb that particularly electrified sections is big especially; 2) be that train presses mode along separate routes, owing to what adopt, in case run into the railway roadbed inclement condition, will cause track circuit shunting badness, quite be the situation that always has car to take, and this not only can influence driving efficient but also have processing just to cause serious accident accidentally slightly; 3), the field, station and the interval orbit section quantity of railway is many especially, and the track circuit cable can not be shared, distance is also long especially, so the investment of the cable of track circuit is big especially; 4), track insulation joint breakage rate is high and to change difficulty big.The appropriate litigation fees height of the input of track circuit, protection and maintenance in a word.
At the railway track block system is the S. A. interval, for whether idle between the test zone, and can be by means of railway microcomputer axle-counting equipment.Promptly enter interval wheel and prove to whether conforming to whether the interval is idle with the right quantity of wheel of leaving the interval by calculating.Therefore the exit of (first) and the ENTRANCE of station (second) are respectively established an inspection area AT STATION, after train passes through, the data that station (first) is checked through pass to station (second) by transmission path, through the consistency analysis comparison, judge whether train goes out clearly fully.
1), there is instability in electromagnetic inductive probe itself what traditional axis-counting device adopted is electromagnetic inductive probe, and following drawback is arranged:; 2), run into the accident contact that maintainer or non-railway personnel have " iron " property object, will produce wrong report; 3), from the collection point to the control cabin, to adopt high-level lightning grounding measure, transmission line need adopt jamming-proof shielded cable, these drop into big and mounting process requires high.Owing to be subjected to the restriction of on-the-spot various factors, see that from condition of service effect is not very stable, and the unstable reduction that will bring driving efficient, this original intention with investment is disagreed.Therefore the instability that has high input becomes the bottleneck of the use of electromagnetic scheme aspect railway meter axle, and range of use is restricted greatly.
Summary of the invention
The purpose of this utility model is to provide the occupation of railway track condition testing fixture of a kind of precision height, good stability.
To achieve these goals, the technical solution of the utility model is: occupation of railway track condition testing fixture, and it comprises fiber bragg grating pressure sensor, transmission cable, optical fiber grating modem, computing machine; It is characterized in that: on the same line rail road of each Railways Stations/section by being interval with of the railway norm requirement fiber bragg grating pressure sensor group that (contains 2) more than 2; Each fiber bragg grating pressure sensor group is made up of 2-5 fiber bragg grating pressure sensor, fiber bragg grating pressure sensor is positioned at the mounting hole on the track and captives joint with track, and the fiber bragg grating pressure sensor of the same fiber bragg grating pressure sensor group back of connecting is mutually linked to each other by the input end of transmission cable with the optical fiber grating modem; The mouth of optical fiber grating modem is linked to each other with computer by serial by signal wire (SW).
The alarm module of described computing machine is linked to each other with the station combined aural and visual alarm by signal wire (SW), and the driver module of computing machine is linked to each other with the station control relay by signal wire (SW), and the communication module of computing machine is linked to each other by the communication module of communications optical cable with the computing machine of adjacent station/section.
The beneficial effects of the utility model are: adopt on the track fiber bragg grating pressure sensor are set, and the survey precision height, noiseless, good stability.
Description of drawings
Fig. 1 is a structural representation of the present utility model
Fig. 2 is the scheme of installation (more than n=2) of the utility model n fiber bragg grating pressure sensor group
Fig. 3 is the cutaway view of Fig. 2 along the A-A line
Fig. 4 is applied to railway microcomputer axle-counting scheme drawing
Fig. 5 is applied to the railroad track section to take condition inspection scheme drawing
Fig. 6 is existing track circuit fundamental diagram
Among the figure: 1-track, 2-transmission cable, 3-first fiber bragg grating pressure sensor, 4-second fiber bragg grating pressure sensor, 5-the 3rd fiber bragg grating pressure sensor, 6-fiber-optical grating temperature sensor, the 7-mounting hole, 8-first station, 9-check point 1,10-check point 2,11-second station, 12-check point 3, WG represents section without a switch, JG represents near rail, a-section 1, b-section 2.
The specific embodiment
As shown in Figure 1, occupation of railway track condition testing fixture, it comprises fiber bragg grating pressure sensor, transmission cable, optical fiber grating modem, computing machine.By being interval with of the railway norm requirement fiber bragg grating pressure sensor group (being the grating check point) that (contains 2) more than 2, the concrete layout visual detection scheme of fiber bragg grating pressure sensor group is fixed on the same line rail road 1 of each Railways Stations/section.Each fiber bragg grating pressure sensor group is made up of [as Fig. 2, shown in Figure 3 2-5 fiber bragg grating pressure sensor, adopt 3 fiber bragg grating pressure sensors among Fig. 2, first fiber bragg grating pressure sensor 3, second fiber bragg grating pressure sensor 4, the 3rd fiber bragg grating pressure sensor 4 space distance=148mm (specifically apart from can according to the difference in functionality adjustment); The not outer fiber-optical grating temperature sensor 6 that also is provided with].Fiber bragg grating pressure sensor is positioned at the mounting hole 7 on the track and captives joint with track (or stickup), and the fiber bragg grating pressure sensor of the same fiber bragg grating pressure sensor group back of connecting is mutually linked to each other by the input end of transmission cable 2 with the optical fiber grating modem; The mouth of optical fiber grating modem is linked to each other with computer by serial by signal wire (SW).
As shown in Figure 1, the alarm module of described computing machine is linked to each other with the station combined aural and visual alarm by signal wire (SW), the driver module of computing machine is linked to each other with the station control relay by signal wire (SW), and the communication module of computing machine is linked to each other by the communication module of communications optical cable with the computing machine of adjacent station/section.
As shown in Figure 1, described optical fiber grating modem, computer bit are in the signaling at stations Machine Room.Fiber bragg grating pressure sensor, optical fiber grating modem, computing machine are respectively known technology.It is the optic fiber grating wavelength (FBG) demodulator for the title that the optical fiber grating modem has, and produces as Shanghai Bohui Communication Technology Co., Ltd..
The same grating check point that is connected of fiber bragg grating pressure sensor is series connection, and different grating check points adopts cascade.The level on line adopts optical fiber, and optical fiber is also adopted in transmission simultaneously.Divide, consider the maximum cascade quantity of fiber optic commonality, fiber-optic grating sensor and standby according to the administration of current track section, general microcomputer axle-counting adopts 2 core fibres; Segment part uses the grating track section to adopt 2 core fibres; The interval grating section that all adopts then adopts 4 core fibres; A whole employing grating section of standing are then looked a station scale suitably increases heart yearn as required.
As shown in Figure 2, because rail is subjected to Temperature Influence to have the physical change of expanding with heat and contract with cold, in order to get rid of the influence of this variation, except fiber bragg grating pressure sensor is set, also be provided with fiber-optical grating temperature sensor 6 in the fiber-optic grating sensor checkpoint to pressure sensor.
As shown in Figure 1, the principle of work of occupation of railway track condition testing fixture: train (containing headstock and car body) itself has very big deadweight, when its point by being set with fiber bragg grating pressure sensor or zone, by wheel pressure is passed on the rail, make rail produce a certain amount of distortion, the rail of distortion makes fiber bragg grating pressure sensor produce corresponding change amount, and the different variable quantity of stress point is just different.Principle of work according to optical fiber grating, check that the change curve of grating just can judge that corresponding regional track is to take condition or free time, can adapt to taking or idle condition of inspection track under the train situation of friction speed by the frequency that changes modem.The variation of surveyed area stress causes optical fiber grating generation strain, and the modulation instrument then can detect the wave length shift of reflected back, has finished the collection and the demodulating process of STRESS VARIATION thus.The technology mechanism of this process provides output data by the optical fiber grating manufacturer by operating needs.The data of modulation instrument output are input in the computing machine by serial ports, the analysis expert process software that computing machine is equipped with a large amount of historical datas of record and many database of information and can compares and judge data and information.The result that analysis draws through the analysis expert process software finishes driving to driver module by drive software, the corresponding control of driver module station interlocking relay (the former control in station with); Communication software is finished the data communication exchange with adjacent station or section, reaches station and station data check comparison needs, and passage can adopt audio frequency or serial ports to transmit through communications optical cable; Alarm module is receiving that the analysis expert process software handles under the abnormal data draw (as the settling amount etc.) situation, and the panalarm in being located at control cabin (station combined aural and visual alarm) sends alarm command, reminds the related personnel to carry out necessary disposal.Computing machine carries out data analysis to be handled, and obtains the distribution situation that measurand is under pressure at last, shows the result by telltale.Collect indoor analyzing and processing again to driving relevant relay from outdoor thus, finished the function of mainly checking the orbit occupancy condition in the past by track circuit.
The utility model is applied to track microcomputer axle-counting, level crossing, substitutes original track circuit and railroad bed sedimentation on-line monitoring.
1, be applied to the railway microcomputer axle-counting:
At the railway track block system is the S. A. interval, for whether idle between the test zone, and can be by means of axis-counting device.Promptly enter interval wheel and prove to whether conforming to whether the interval is idle with the right quantity of wheel of leaving the interval by calculating.Therefore the exit of (first) and the ENTRANCE of station (second) are respectively established an inspection area AT STATION, after train passes through, the data that station (first) is checked through pass to station (second) by transmission path, through the consistency analysis comparison, judge whether train goes out clearly fully.
As shown in Figure 4, optical fiber grating meter axle is exactly in the setting regions of advancing (going out) exit (meeting the technical requirements of railway meter axle) one to two group of fiber bragg grating pressure sensor to be installed, pressure when gathering train by sensor region changes and passes to modem in real time by optical fiber then, relatively judges through computing machine to draw accurately Train Wheel to information.
2, be applied to the railroad track section and take the condition inspection:
As shown in Figure 5, under the prerequisite that does not change the existing division of track (containing track switch) section, can adorn one group of optical fiber transducer at the insulation joint place of original track section (insulator arrangement at this place can be cancelled), head end by each track section is relatively judged information with the wheel of the collection of end, when the information of head end and end is in full accord, the expression train has gone out this section clearly, is equivalent to the track section idle condition; Otherwise, be exactly that this section also takies, just quite track circuit is a short-circuit condition, is exactly red band at control desk.Because optical fiber transducer has address code, and can be connected in series continuously, the head end of the end of a section and an adjacent section can distinguish accurately by address code, satisfies the technical requirements of railway track circuit fully.
3, be applied to railway (at a high speed) subsidence on-line monitoring:
High speed railway is very high to the requirement of roadbed, and the train that any one uneven sedimentation all can cause running at high speed is overturned, and will cause the heavy losses of personnel and property in case have an accident.
One group of fiber bragg grating pressure sensor is arranged at every interval 50 meters (looking survey precision needs and can adjust) in the outside of rail, then every group of sensor stringed together with optical fiber again and directly introduce monitoring and control centre by optical fiber, after the data processing system of monitoring and control centre converts by speed according to the change curve of each group sensor acquisition, relatively drawing a certain group of abnormal data with historical data will report to the police, and notifies the maintainer in time to arrive this place's maintenance.
4, other applicating examples:
1), level crossing train proximity sensing; 2), bridge tunnel train proximity sensing; 2), locomotive velocity measuring and survey are long etc.More than can check that the principle of orbit occupancy condition realizes according to optical fiber grating.
The advantage that the utility model is used:
Fiber-optic grating sensor has that volume is little, precision is high, the life-span is long, high reliability, with the advantage such as optical fiber compatibility, process The adaptability packing very easily is embedded to object under test inside or is bonded in the object under test appearance, realizes high accuracy, nothing to object The Real-Time Monitoring that disturbs. Can realize the digitlization sensing, especially can under railway depopulated zone, non-Electric region and rugged environment Long-term stable operation. Particularly aspect anti-electromagnetic interference and the thunder-lightning unique advantage is being arranged.
Claims (2)
1. occupation of railway track condition testing fixture, it comprises fiber bragg grating pressure sensor, transmission cable, optical fiber grating modem, computing machine; It is characterized in that: be interval with 2 above fiber bragg grating pressure sensor groups on the same line rail road of each Railways Stations/section; Each fiber bragg grating pressure sensor group is made up of 2-5 fiber bragg grating pressure sensor, fiber bragg grating pressure sensor is positioned at the mounting hole on the track and captives joint with track, and the fiber bragg grating pressure sensor of the same fiber bragg grating pressure sensor group back of connecting is mutually linked to each other by the input end of transmission cable with the optical fiber grating modem; The mouth of optical fiber grating modem is linked to each other with computer by serial by signal wire (SW).
2. occupation of railway track condition testing fixture according to claim 1, it is characterized in that: the alarm module of described computing machine is linked to each other with the station combined aural and visual alarm by signal wire (SW), the driver module of computing machine is linked to each other with the station control relay by signal wire (SW), and the communication module of computing machine is linked to each other by the communication module of communications optical cable with the computing machine of adjacent station/section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620098631 CN200981565Y (en) | 2006-08-24 | 2006-08-24 | Device for detecting railway orbit occupation condition |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620098631 CN200981565Y (en) | 2006-08-24 | 2006-08-24 | Device for detecting railway orbit occupation condition |
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| CN200981565Y true CN200981565Y (en) | 2007-11-28 |
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| CN 200620098631 Expired - Fee Related CN200981565Y (en) | 2006-08-24 | 2006-08-24 | Device for detecting railway orbit occupation condition |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101797928A (en) * | 2010-02-11 | 2010-08-11 | 西南交通大学 | Rail transportation axle-counting device for packaging FBG based on semi-freedom |
| CN101428634B (en) * | 2008-03-14 | 2011-04-06 | 方阵（北京）科技有限公司 | Axle count sensor |
| CN102079319A (en) * | 2009-11-30 | 2011-06-01 | 同方威视技术股份有限公司 | Railway Rockfall Early Warning System and Railway Rockfall Early Warning Method |
| CN102161344A (en) * | 2010-12-27 | 2011-08-24 | 深圳思量微系统有限公司 | Track axle detection method based on stress variation |
| CN102303626A (en) * | 2011-05-27 | 2012-01-04 | 武汉理工大学 | Fiber grating railway switch close contact monitoring device |
| CN102392395A (en) * | 2011-09-15 | 2012-03-28 | 中国科学院半导体研究所 | Point rail with self-detection function used for high-speed railway turnout |
| CN104309644A (en) * | 2014-10-13 | 2015-01-28 | 深圳市科安达轨道交通技术有限公司 | Optical fiber grating sensor-based axle counter |
| CN106985879A (en) * | 2017-04-18 | 2017-07-28 | 卡斯柯信号有限公司 | A kind of train occupation detecting system and method |
| CN108050941A (en) * | 2017-12-25 | 2018-05-18 | 西安工业大学 | A kind of CW with frequency modulation laser interference optical fiber displacement sensor and its displacement detecting method |
| CN109131436A (en) * | 2017-06-15 | 2019-01-04 | 比亚迪股份有限公司 | Detection method, device and the Rail Transit System of orbit occupancy state |
| CN109398408A (en) * | 2018-12-19 | 2019-03-01 | 中铁第四勘察设计院集团有限公司 | A kind of mounting structure of wheel tread detection zone track circuit |
| CN110091893A (en) * | 2019-04-28 | 2019-08-06 | 北京全路通信信号研究设计院集团有限公司 | Grating axle counting track circuit system and working method |
| 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 |
| CN111183085A (en) * | 2017-09-22 | 2020-05-19 | 塔莱斯管理与服务德国有限责任公司 | Method for assembling track monitoring elements |
-
2006
- 2006-08-24 CN CN 200620098631 patent/CN200981565Y/en not_active Expired - Fee Related
Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101428634B (en) * | 2008-03-14 | 2011-04-06 | 方阵（北京）科技有限公司 | Axle count sensor |
| CN103465934B (en) * | 2009-11-30 | 2015-09-02 | 同方威视技术股份有限公司 | Railway falling rocks method for early warning |
| CN102079319A (en) * | 2009-11-30 | 2011-06-01 | 同方威视技术股份有限公司 | Railway Rockfall Early Warning System and Railway Rockfall Early Warning Method |
| CN103465935A (en) * | 2009-11-30 | 2013-12-25 | 同方威视技术股份有限公司 | Early warning method for railway rockfall |
| CN102079319B (en) * | 2009-11-30 | 2014-05-14 | 同方威视技术股份有限公司 | Railway Rockfall Early Warning System and Railway Rockfall Early Warning Method |
| CN103465935B (en) * | 2009-11-30 | 2015-11-25 | 同方威视技术股份有限公司 | Railway falling rocks method for early warning |
| CN101797928A (en) * | 2010-02-11 | 2010-08-11 | 西南交通大学 | Rail transportation axle-counting device for packaging FBG based on semi-freedom |
| CN102161344A (en) * | 2010-12-27 | 2011-08-24 | 深圳思量微系统有限公司 | Track axle detection method based on stress variation |
| CN102303626A (en) * | 2011-05-27 | 2012-01-04 | 武汉理工大学 | Fiber grating railway switch close contact monitoring device |
| CN102392395A (en) * | 2011-09-15 | 2012-03-28 | 中国科学院半导体研究所 | Point rail with self-detection function used for high-speed railway turnout |
| CN104309644A (en) * | 2014-10-13 | 2015-01-28 | 深圳市科安达轨道交通技术有限公司 | Optical fiber grating sensor-based axle counter |
| CN106985879A (en) * | 2017-04-18 | 2017-07-28 | 卡斯柯信号有限公司 | A kind of train occupation detecting system and method |
| CN109131436A (en) * | 2017-06-15 | 2019-01-04 | 比亚迪股份有限公司 | Detection method, device and the Rail Transit System of orbit occupancy state |
| CN111183085A (en) * | 2017-09-22 | 2020-05-19 | 塔莱斯管理与服务德国有限责任公司 | Method for assembling track monitoring elements |
| US11524711B2 (en) | 2017-09-22 | 2022-12-13 | Thales Management & Services Deutschland Gmbh | Method for mounting a rail monitoring element |
| CN108050941A (en) * | 2017-12-25 | 2018-05-18 | 西安工业大学 | A kind of CW with frequency modulation laser interference optical fiber displacement sensor and its displacement detecting method |
| CN109398408A (en) * | 2018-12-19 | 2019-03-01 | 中铁第四勘察设计院集团有限公司 | A kind of mounting structure of wheel tread detection zone track circuit |
| CN109398408B (en) * | 2018-12-19 | 2024-01-02 | 中铁第四勘察设计院集团有限公司 | Mounting structure of wheel set tread detection area track circuit |
| CN110091893A (en) * | 2019-04-28 | 2019-08-06 | 北京全路通信信号研究设计院集团有限公司 | Grating axle counting track circuit system and working method |
| 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 |
| CN110823264B (en) * | 2019-11-26 | 2024-06-04 | 北京全路通信信号研究设计院集团有限公司 | Continuous track occupation checking system based on fiber bragg grating sensing technology |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20071128 Termination date: 20150824 |
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| EXPY | Termination of patent right or utility model |