CN110095057A - A kind of train pantograph method for detecting position, device, excessive phase method and system - Google Patents
A kind of train pantograph method for detecting position, device, excessive phase method and system Download PDFInfo
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- CN110095057A CN110095057A CN201810096597.2A CN201810096597A CN110095057A CN 110095057 A CN110095057 A CN 110095057A CN 201810096597 A CN201810096597 A CN 201810096597A CN 110095057 A CN110095057 A CN 110095057A
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- train
- optical fiber
- contact line
- pantograph
- optical signal
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
Abstract
The invention discloses a kind of train pantograph method for detecting position, device, excessive phase method and systems, detection method includes perceiving stress variation situation of the train pantograph on the optical fiber along the optical fiber that contact line is laid by optical fiber, so that the optical signal in the optical fiber is modulated by the stress, the position for the optical signal identified sign modulated again by analysis, so that it is determined that the position of train pantograph.Pantograph method for detecting position, device have locating speed fast, accuracy is high, stability is good, the advantages that being not susceptible to external interference, based on the pantograph method for detecting position and device, cross the stability of split-phase with train is improved, improve passing phase insulator device response speed and reliability, effectively prevent thunder and lightning, electromagnetic interference the advantages that.
Description
Technical field
The present invention relates to train position detection and cross split-phase technical field more particularly to a kind of train pantograph position detection
Method, apparatus, excessive phase method and system.
Background technique
With the development of China's electric railway, train in the process of running, the position where the train that needs to watch with the deepest concern,
In the prior art, train position is determined generally by vehicle-mounted global position system, and be sent in control by network
The heart, and this mode, due to satellite positioning and the delay of network communication, there is also certain errors for identified location information, no
It can in time, accurately reflect train position information.Also, electric locomotive is commonly used, and tractive power supply system is single using exchange
Phase power frequency commutation power supply mode, while to avoid heterophase short-circuit and guaranteeing that locomotive can pass through electric split-phase, electric railway connects
20~the 30km that touches net will install an electric neutral section, as route freight volume and the speed of service are gradually promoted, in order to be promoted
The problems such as phase separation ability is crossed in electric locomotive, reduces speed loss of the locomotive during crossing split-phase, mainly used split-phase at this stage
Technology, wherein with using electronic power switch ground automatic passing over of neutral section scheme, vehicle-mounted automatically powered off split-phase scheme and column is opened
Pass automatically powers off based on scheme, mainly solves by mechanical switch or electronic switch to realize the non-Electric region of differential gap by two not
Power supply with supply arm introduces differential gap in turn, takes stream to realize that unaware crosses split-phase for electric locomotive, wherein electronic power switch
Ground automatic passing over of neutral section utilizes the advantages that quick response of power electronic devices, accurate control, long-life that will become comparatively ideal
Ground automatic neutral-section passing device, but how to fast implement to the detection of train position is that ground automatic neutral-section passing device is cut in power supply
Shift to the crucial governing factor of non-Electric region, it may be said that be the eyes of whole device, need by being especially train position by electricity
The detection for bending position, fast and accurately completed the control of split-phase switching device, was to realize ground automatic passing over of neutral section commutation technology
And train passes through the critical issue of electric phase-separating section.
Summary of the invention
The technical problem to be solved in the present invention is that, for technical problem of the existing technology, the present invention provides one
Kind locating speed is fast, and accuracy is high, and stability is good, it is not easy to by the train pantograph method for detecting position and dress of external interference
It sets, and is based on the pantograph method for detecting position and device, can be improved the stability that train crosses split-phase, improved split-phase dress
Response speed and reliability are set, thunder and lightning, the excessive phase method of electromagnetic interference and system are effectively prevent.
In order to solve the above technical problems, technical solution proposed by the present invention are as follows: a kind of train pantograph method for detecting position,
Stress variation situation of the train pantograph on the optical fiber is perceived along the optical fiber that contact line is laid by optical fiber, so that described
Optical signal in optical fiber is modulated by the stress, then the position for the optical signal identified sign modulated by analysis, thus really
Determine the position of train pantograph.
Further, the fiber deployment is in the wiring cavity of the inside of the contact line；Alternatively, the fiber deployment
In the wiring groove that the contact line surface opens up；The stress by pressure conduction of the train pantograph on the contact net to
The optical fiber and generate.
Further, lower part of the fiber deployment in the contact line.
Further, the optical fiber is independent and the contact line, the optical fiber are coated with protective layer.
A kind of train pantograph position detecting device, including optical signal launch unit, optical fiber, optical signal receiving unit and light
Signal processing unit；
The optical signal launch unit is for emitting optical signal into the optical fiber；
The optical fiber is laid along contact line, for perceiving stress variation situation of the train pantograph on the optical fiber, so that institute
The optical signal stated in optical fiber is modulated by the stress；
The optical signal receiving unit is for receiving the optical signal transmitted in the optical fiber；
The optical signal processing unit is used to be analyzed and processed the received optical signal of the optical signal receiving unit institute, calculates
The position of the stress is determined, so that it is determined that the position of train.
Further, the fiber deployment is in the wiring cavity of the inside of the contact line；Alternatively, the fiber deployment
In the wiring groove that the contact line surface opens up；The stress by pressure conduction of the train pantograph on the contact net to
The optical fiber and generate.
Further, lower part of the fiber deployment in the contact line.
Further, the optical fiber is independent and the contact line, the optical fiber are coated with protective layer.A kind of train is excessive
Phase method determines the position of train, passing phase insulator device root by described in any item train pantograph method for detecting position as above
The output of electric energy is controlled according to the position of the train.
A kind of train neutral-section passing system, including passing phase insulator device and described in any item train pantograph position detections as above
Device, the train pantograph position detecting device are used to determine the position of train, and the passing phase insulator device is used for according to
The position of train controls the output of electric energy.
Compared with the prior art, the advantages of the present invention are as follows:
1, the present invention is perceived train pantograph by the optical fiber laid along contact line and generates stress on optical fiber, should by analysis
Stress comes the position of identified sign to the modulation case of fiber middle light signal, so that it is determined that the position of train pantograph, it is fixed to have
The advantages that position precision is high, and accuracy is good, and speed is fast, can effectively prevent thunder and lightning, electromagnetic interference.
2, the present invention crosses individual-phase control by the way that the position of the determined train pantograph of fiber optic sensor technology is used for train
In, it is ensured that train crosses that the train position information in individual-phase control is accurate, time delay is small, interference is small, thereby may be ensured that split-phase
Accurate, the stability height of control.
Detailed description of the invention
Fig. 1 is that optical fiber modulated signal takes power detection schematic diagram by force.
Fig. 2 is the layout diagram one of specific embodiment of the invention contact line and optical fiber.
Fig. 3 is the layout diagram two of specific embodiment of the invention contact line and optical fiber.
Fig. 4 is the layout diagram three of specific embodiment of the invention contact line and optical fiber.
Fig. 5 is specific embodiment of the invention positioning device structure schematic diagram.
Fig. 6 is the excessive phase application scenarios schematic diagram of the specific embodiment of the invention.
Fig. 7 is that the specific embodiment of the invention crosses split-phase time fibre layout diagram one.
Fig. 8 is that the specific embodiment of the invention crosses split-phase time fibre layout diagram two.
Fig. 9 is specific embodiment of the invention neutral-section passing system structural schematic diagram.
Specific embodiment
Below in conjunction with Figure of description and specific preferred embodiment, the invention will be further described, but not therefore and
It limits the scope of the invention.
The train pantograph method for detecting position of the present embodiment, the optical fiber laid by optical fiber along contact line perceive train
Stress variation situation of the pantograph on optical fiber so that the optical signal in optical fiber is modulated by stress, then is modulated by analysis
Optical signal identified sign position, so that it is determined that the position of train pantograph.
As shown in Figure 1, according to the principle of fibre optical sensor, optical signal is transmitted in inside of optical fibre, when optical fiber is pressed by outside
When power, small deformation can be generated, so that the optical signal in inside of optical fibre transmission is modulated, so that the intensity of optical signal,
The parameters such as wavelength, frequency, phase, polarization state change, by comparing modulated optical signal and reference modulation wave,
Analysis, so that it may determine pressure size, and position of the pressure on optical fiber is assured that by the feedback time of light.This implementation
This characteristic for the fibre optical sensor that example exactly utilizes, train pantograph is perceived by the optical fiber laid along contact line in optical fiber
Stress (pressure) situation of upper generation, so that the optical signal in optical fiber is modulated by stress, then the light letter modulated by analysis
The position of number identified sign, so that it is determined that the position of train pantograph.Since optical signal is transmitted in inside of optical fibre, anti lightning, electricity
Magnetic disturbance ability is strong, and electrical insulating property is good, and stability is good, the remote monitor easy to accomplish to measured signal, corrosion-resistant, explosion-proof,
Optical path has flexibility, convenient for coupling with computer, is also not readily susceptible to trespass.
In the present embodiment, about optical fiber how along contact line laying can use various ways:
Mode one: optical fiber independence and contact line, optical fiber are coated with protective layer.As shown in Fig. 2, individually setting up one along contact line
Optical fiber, when train is run on the line, pantograph with contact line and optical fiber contact, takes from contact line simultaneously by pantograph
While electric, pantograph can generate pressure on optical fiber, so that the optical signal of inside of optical fibre is modulated, so that it is determined that train
The position of pantograph.The laying of optical fiber and contact line is mutually indepedent in the method, and flexibility is more preferable, but difficulty of construction is relatively
Greatly, higher cost.
Mode two: as shown in figure 3, fiber deployment is in the wiring cavity of the inside of contact line；Stress is by train pantograph
Pressure conduction on contact net is generated to optical fiber.By fiber deployment inside contact line, on the one hand, contact net is metal
Material can form optical fiber and be effectively protected, improve the service life of optical fiber；On the other hand, optical fiber composite wire manufactures work
Skill is mature, and manufacturing cost is low, convenient a wide range of popularization and use.
In the present embodiment, lower part of the fiber deployment in the contact line.As shown in the cross-sectional view of figure 3, optical fiber exists
In contact line and the contact surface from contact line and pantograph is closer to so that optical fiber can preferably perceive by
The pressure for the pantograph that contact line conduction comes.The flexibility of the method is not so good as mode one, but only needs using optical fiber composite cable,
The laying of contact line and optical fiber can be disposably completed, difficulty of construction is relatively low, but flexibility is poor.
Mode three: as shown in figure 4, fiber deployment is in the wiring groove that contact line surface opens up；Stress is by train pantograph
Pressure conduction on contact net is generated to optical fiber.By opening up wiring groove in contact line, by fiber deployment in wiring groove
It is interior, on the one hand, using contact line as the protective layer of optical fiber, meanwhile, in installation, can effectively utilize contact line
Overhead line erecting equipment, reduce cost and difficulty of construction, be used in combination, optical fiber relative to contact line independence, have preferable flexibility, simultaneously
The advantages of having both mode one and mode two.
The train pantograph position detecting device of the present embodiment, as shown in figure 5, including optical signal launch unit, optical fiber, light
Signal receiving unit and optical signal processing unit；Optical signal launch unit is for emitting optical signal into optical fiber；Optical fiber is along contact
Line is laid, for perceiving stress variation situation of the train pantograph on optical fiber, so that the optical signal in optical fiber is adjusted by stress
System；Optical signal of the optical signal receiving unit for being transmitted in reception optical fiber；Optical signal processing unit is used to receive optical signal single
First received optical signal of institute is analyzed and processed, and the position of identified sign is calculated, so that it is determined that the position of train.
In the present embodiment, about optical fiber how along contact line laying can use various ways:
Mode one: optical fiber independence and contact line, optical fiber are coated with protective layer.As shown in figure 3, individually setting up one along contact line
Optical fiber, when train is run on the line, pantograph with contact line and optical fiber contact, takes from contact line simultaneously by pantograph
While electric, pantograph can generate pressure on optical fiber, so that the optical signal of inside of optical fibre is modulated, so that it is determined that train
The position of pantograph.The laying of optical fiber and contact line is mutually indepedent in the method, and flexibility is more preferable, but difficulty of construction is relatively
Greatly, higher cost.
Mode two: as shown in figure 3, fiber deployment is in the wiring cavity of the inside of contact line；Stress is by train pantograph
Pressure conduction on contact net is generated to optical fiber.By fiber deployment inside contact line, on the one hand, contact net is metal
Material can form optical fiber and be effectively protected, improve the service life of optical fiber；On the other hand, optical fiber composite wire manufactures work
Skill is mature, and manufacturing cost is low, convenient a wide range of popularization and use.
In the present embodiment, lower part of the fiber deployment in the contact line.As shown in the cross-sectional view of figure 3, optical fiber exists
In contact line and the contact surface from contact line and pantograph is closer to so that optical fiber can preferably perceive by
The pressure for the pantograph that contact line conduction comes.The flexibility of the method is not so good as mode one, but only needs using optical fiber composite cable,
The laying of contact line and optical fiber can be disposably completed, difficulty of construction is relatively low, but flexibility is poor.
Mode three: as shown in figure 4, fiber deployment is in the wiring groove that contact line surface opens up；Stress is by train pantograph
Pressure conduction on contact net is generated to optical fiber.By opening up wiring groove in contact line, by fiber deployment in wiring groove
It is interior, on the one hand, using contact line as the protective layer of optical fiber, meanwhile, in installation, can effectively utilize contact line
Overhead line erecting equipment, reduce cost and difficulty of construction, be used in combination, optical fiber relative to contact line independence, have preferable flexibility, simultaneously
The advantages of having both mode one and mode two.
The excessive phase method of the train of the present embodiment determines train by train pantograph method for detecting position as described above
Position, passing phase insulator device controls the output of electric energy according to the position of train.
As shown in fig. 6, contact line uses optical fiber composite cable, it is train power supply by cable, meanwhile, the optical fiber in cable
The position that train pantograph can be perceived again, obtains the location information of train.By taking train crosses phase-separating section from left to right as an example into
Row explanation, including following process:
1, when train pantograph does not reach G1 point, pantograph takes the normal driving of stream from electrical power contact line, is by continued flow resistance device
Electronic switch provides conducting circuit, it is ensured that the normally of electronic switch.
2, after train pantograph reaches G1 point, and position signal is transmitted to control system, controls electronic switch SCR-V1
Conducting, leads to neutral section J0 for A phase power supply, locomotive can drive into differential gap, and differential gap is A phase power supply with A phase supply arm simultaneously.
3, pantograph reaches G3 point after locomotive enters neutral section, and control electronic switch SCR-V1 shutdown is opened with SCR-V2's
Lead to the commutation to realize power supply, realize and disconnect A phase power supply, while quickly introducing B phase power supply in neutral section, locomotive can be realized
It does not power off or unaware passes through phase-separating section.
4, locomotive continues to move ahead, and into B phase contact net for power supplying, sails out of phase-separating section, and motorcycle pantograph arrived G4 point, this
When train left differential gap, control system then disconnects SCR-V2, and ground automatic neutral-section passing device restores, for locomotive mistake next time
Split-phase is prepared.
When train drives through phase-separating section from right to left, control principle is identical as above-mentioned control principle, process with it is upper
It is opposite to state process.
Due in excessive corresponding force scene, it is only necessary in the position for crossing phase-separating section monitoring train, therefore, in the present embodiment
In, optical fiber is only laid in split-phase region.As shown in fig. 7, the case where independently being laid for contact line and optical fiber, it is only necessary to
Each split-phase region independent rack sets one for monitoring the optical fiber of train pantograph position.For using optical fiber composite cable, such as
Shown in Fig. 8, only the neutral section and A of contact line be in contact line and B be in contact line connecting pin using optical fiber composite cable,
Thicker shown in solid in optical fiber composite cable such as Fig. 8, optical fiber is as shown in phantom in Figure 8, it is hereby achieved that an optical signal
The circuit of propagation.It is in contact the overlay region of line and neutral section for A phase or B, train pantograph can be to two when passing through the region
The optical fiber of position generates stress, may thereby determine that two positions on optical fiber, but for determining optical fiber, two positions
Be it is determining, further, can also judge whether train enters by whether there is two positions in detection fiber and be overlapped
Area.
The train neutral-section passing system of the present embodiment, as shown in figure 9, including passing phase insulator device and train as described above by electricity
Bend position detecting device, train pantograph position detecting device is used to determine the position of train, and passing phase insulator device is used for according to column
The position of vehicle controls the output of electric energy.
In the present embodiment, the position of the determined train pantograph of fiber optic sensor technology is used for train and crosses individual-phase control
In, it is ensured that train crosses that the train position information in individual-phase control is accurate, time delay is small, interference is small, thereby may be ensured that split-phase
Accurate, the stability height of control.
Above-mentioned only presently preferred embodiments of the present invention, is not intended to limit the present invention in any form.Although of the invention
It has been disclosed in a preferred embodiment above, however, it is not intended to limit the invention.Therefore, all without departing from technical solution of the present invention
Content, technical spirit any simple modifications, equivalents, and modifications made to the above embodiment, should all fall according to the present invention
In the range of technical solution of the present invention protection.
Claims (10)
1. a kind of train pantograph method for detecting position, it is characterised in that: the optical fiber laid by optical fiber along contact line perceives
Stress variation situation of the train pantograph on the optical fiber, so that the optical signal in the optical fiber is modulated by the stress,
The position for the optical signal identified sign modulated again by analysis, so that it is determined that the position of train pantograph.
2. train pantograph method for detecting position according to claim 1, it is characterised in that: the fiber deployment is described
In the wiring cavity of the inside of contact line；Alternatively, the fiber deployment is in the wiring groove that the contact line surface opens up；It is described
Stress is generated by pressure conduction of the train pantograph on the contact net to the optical fiber.
3. train pantograph method for detecting position according to claim 2, it is characterised in that: the fiber deployment is described
Lower part in contact line.
4. train pantograph method for detecting position according to claim 1, it is characterised in that: the optical fiber it is independent with it is described
Contact line, the optical fiber are coated with protective layer.
5. a kind of train pantograph position detecting device, it is characterised in that: connect including optical signal launch unit, optical fiber, optical signal
Receive unit and optical signal processing unit；
The optical signal launch unit is for emitting optical signal into the optical fiber；
The optical fiber is laid along contact line, for perceiving stress variation situation of the train pantograph on the optical fiber, so that institute
The optical signal stated in optical fiber is modulated by the stress；
The optical signal receiving unit is for receiving the optical signal transmitted in the optical fiber；
The optical signal processing unit is used to be analyzed and processed the received optical signal of the optical signal receiving unit institute, calculates
The position of the stress is determined, so that it is determined that the position of train.
6. train pantograph position detecting device according to claim 5, it is characterised in that: the fiber deployment is described
In the wiring cavity of the inside of contact line；Alternatively, the fiber deployment is in the wiring groove that the contact line surface opens up；It is described
Stress is generated by pressure conduction of the train pantograph on the contact net to the optical fiber.
7. train pantograph position detecting device according to claim 6, it is characterised in that: the fiber deployment is described
Lower part in contact line.
8. train pantograph position detecting device according to claim 5, it is characterised in that: the optical fiber it is independent with it is described
Contact line, the optical fiber are coated with protective layer.
9. a kind of excessive phase method of train, it is characterised in that: pass through the described in any item train pantographs of such as Claims 1-4
Method for detecting position determines the position of train, and passing phase insulator device controls the output of electric energy according to the position of the train.
10. a kind of train neutral-section passing system, it is characterised in that: including passing phase insulator device and as described in any one of claim 5 to 8
Train pantograph position detecting device, the train pantograph position detecting device is used to determine the position of train, the mistake
Neutral section is used to control the output of electric energy according to the position of the train.
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Cited By (5)
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| CN110605966A (en) * | 2019-09-18 | 2019-12-24 | 中车株洲电力机车有限公司 | Control method and system for automatic lifting of current collector of energy storage type tramcar |
| CN110907081A (en) * | 2019-12-09 | 2020-03-24 | 湖北文华系统工程有限公司 | Pantograph contact pressure monitoring device, system and method based on Internet of things |
| CN111319517A (en) * | 2020-03-04 | 2020-06-23 | 西南交通大学 | Train pantograph position detection method in virtual in-phase power supply system |
| CN112129445A (en) * | 2020-09-27 | 2020-12-25 | 中国科学院力学研究所 | Bow net contact force on-line test scheme |
| CN112937378A (en) * | 2019-12-11 | 2021-06-11 | 株洲中车时代电气股份有限公司 | Automatic neutral section passing device for ground |
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| CN110907081A (en) * | 2019-12-09 | 2020-03-24 | 湖北文华系统工程有限公司 | Pantograph contact pressure monitoring device, system and method based on Internet of things |
| CN110907081B (en) * | 2019-12-09 | 2021-08-06 | 湖北文华系统工程有限公司 | Pantograph contact pressure monitoring method based on Internet of things |
| CN112937378A (en) * | 2019-12-11 | 2021-06-11 | 株洲中车时代电气股份有限公司 | Automatic neutral section passing device for ground |
| CN111319517A (en) * | 2020-03-04 | 2020-06-23 | 西南交通大学 | Train pantograph position detection method in virtual in-phase power supply system |
| CN111319517B (en) * | 2020-03-04 | 2022-05-10 | 西南交通大学 | Method for detecting position of train pantograph in virtual in-phase power supply system |
| CN112129445A (en) * | 2020-09-27 | 2020-12-25 | 中国科学院力学研究所 | Bow net contact force on-line test scheme |
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Application publication date: 20190806 |