CN109795525A - A kind of vacuum pipe flying train communication system - Google Patents
A kind of vacuum pipe flying train communication system Download PDFInfo
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- CN109795525A CN109795525A CN201910031296.6A CN201910031296A CN109795525A CN 109795525 A CN109795525 A CN 109795525A CN 201910031296 A CN201910031296 A CN 201910031296A CN 109795525 A CN109795525 A CN 109795525A
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Abstract
The present invention provides a kind of vacuum pipe flying train communication systems, for solving the wireless communication problems of vacuum pipe flying train.The vacuum pipe flying train communication system includes: ground microcell antenna subsystem, car antenna subsystem；Between the ground microcell antenna subsystem and car antenna subsystem the dephased same signal of tool is sent or received by the microcell antenna of forward-propagating and backpropagation simultaneously and realizes wireless communication.Vacuum pipe flying train communication system of the invention, it can control the characteristics of receiving antenna receives electromagnetic wave phase using the antenna that double-helix is distributed, the incidence angle of electromagnetic wave is controlled by control microcell antenna direction, utilize the similar feature of the wireless propagation environment of train front and back, farthest eliminate the influence of multipath reflection and Doppler effect, it can be effectively improved the wireless signal transmission of vacuum pipe flying train, improve communication quality and user experience.
Description
Technical field
The invention belongs to field of microwave communication, and in particular to a kind of vacuum pipe flying train communication system.
Background technique
With the continuous development in city, high-speed railway also obtains prominent fly as a kind of intercity important mode of transportation
The technological innovation pushed ahead vigorously.When the development of high-speed rail is advanced triumphantly, follow-on ultrahigh speed high-speed rail technology --- vacuum pipe high speed
Flying train also gradually attracts the concern of people.Vacuum pipe high-speed flight train is in bullet train dirft tube high speed row
It sails.Bullet train dirft tube, be it is a kind of on the ground or the closed metal pipeline established of underground, the atmospheric pressure inside pipeline is non-
Often low, bullet train when driving, has the characteristics that low mechanical friction, low aerodynamic drag, low noise in vacuum pipe, train with
Ultraspeed (more than 1000km/h) galloping.
In order to guarantee high-speed flight train safe operation and car-ground communication demand, it is necessary to have corresponding communication system
Blanket insurance hinders its communication requirement.Due to the particularity of high-speed flight train, the communication mode between train and ground can not have been taken
The mode of line communication, but take the mode of wireless communication.
In the prior art, the mode of wireless free wave intervention is generallyd use.But this mode can not be applied
In flying train vacuum pipe, the reason is as follows that: firstly, electromagnetic wave is by base according to the mode of traditional wireless free wave intervention
Decline great twice need to be undergone by standing to user terminal, be that Electromgnetically-transparent vacuum pipe metallic walls and Electromgnetically-transparent arrange respectively
Vehicle metal car body, it is very weak that this will will lead to the wireless signal that terminal receives；Secondly as high-speed flight train is with high
Speed traveling, the Doppler frequency shift generated between base station by be high-speed rail generate Doppler frequency shift several times, this will certainly lead
Cause traditional base station system cannot be with high-speed flight train normal communication, thus traditional free wave access way is infeasible
's.
In addition, in the prior art, generalling use leaky wave communications cable system and realizing wireless communication.But in flying train
In vacuum pipe, vacuum pipe wall is metallic conductor, sews influence of the electromagnetic wave by metallic walls, to be all-trans in vacuum pipe
The form penetrated exists, this is different with the leaky wave cable electromagnetic environment in conventional containment environment, cannot achieve between vehicle-ground
Wireless communication.
Summary of the invention
In order to improve intercity exchange and conmmunication efficiency, the present invention is directed to vacuum pipe flying train, provides one kind
Vacuum pipe flying train communication system, the microcell antenna based on double helix distribution, it is ensured that at any time, only have one reversely
It propagates microcell antenna to be communicated with the Chinese herbaceous peony aerial array of train, forward-propagating microcell antenna with the tailstock aerial array of train, disappear
Except multipath effect and Doppler effect, to ensure the communication between the train run at high speed and ground.
To achieve the goals above, this invention takes following technical solutions.
A kind of vacuum pipe flying train communication system, vacuum pipe flying train communication system include: ground microcell antenna
Subsystem, car antenna subsystem；By forward-propagating and instead between the ground microcell antenna subsystem and car antenna subsystem
The dephased same signal of tool is sent or received simultaneously to the microcell antenna of propagation realizes wireless communication.
Further, the ground microcell antenna subsystem includes: central station, and ground double helix is distributed micro-
Antenna；The car antenna subsystem includes: vehicle-mounted data processing center, car antenna array.
Further, the microcell antenna of the double helix distribution includes: backpropagation distribution microcell antenna and forward-propagating distribution
Microcell antenna；The car antenna array includes: Chinese herbaceous peony aerial array and tailstock aerial array.
Further, the microcell antenna of the ground double helix distribution is mounted in the pipeline of the flying train vacuum pipe
Wall, backpropagation is distributed microcell antenna and forward-propagating distribution microcell antenna is distributed in vacuum pipe inner wall in double-helix, and positive
It propagates distribution microcell antenna track and differs 90 ° in phase with backpropagation distribution microcell antenna track.
Further, the microcell antenna is made of a series of miniature antennas, has directional beam figuration feature.
Further, the central axes of the microcell antenna and vacuum pipe are a certain included angle, and the section with vacuum pipe
Also it is a certain included angle；Forward-propagating microcell antenna and backpropagation microcell antenna corresponding microcell antenna and vacuum tube at same position
The angle of road central axes is opposite.
Further, the central station be used for control it is forward and reverse propagate microcell antenna data send with
It receives；When sending out data, the position current according to train controls certain a pair of forward and reverse propagation microcell antenna while sending phase
Same electric signal；When data is received, the position current according to train is read certain a pair of forward and reverse propagation microcell antenna and is received
Electric signal, and Phase Processing is gone to two path signal.
Further, the Chinese herbaceous peony aerial array is mounted on the center on train head；The tailstock aerial array peace
Mounted in the center of last vehicle of train；Vehicle-mounted data processing center is mounted on vehicle body, controls two aerial arrays simultaneously
Receive electromagnetic wave or transmitting electromagnetic wave.
Further, the Chinese herbaceous peony aerial array at any time only can be with the micro- day of some in backpropagation microcell antenna
Line is communicated, the tailstock aerial array at any time only can with some microcell antenna in forward-propagating microcell antenna into
Row communication.
Further, the vehicle-mounted data center is used to control data receiver and the transmission of Chinese herbaceous peony and tailstock aerial array；
When sending out data, vehicle-mounted data center control Chinese herbaceous peony and tailstock aerial array send identical electric signal simultaneously；When reception number
According to when, vehicle-mounted data center receives the electric signal of the aerial array from Chinese herbaceous peony and the tailstock, and goes phase to two path signal
Processing.
As can be seen from the technical scheme provided by the above-mentioned embodiment of the present invention, the vacuum pipe flight of the embodiment of the present invention
Train communication system can control the characteristics of receiving antenna receives electromagnetic wave phase using the antenna that double-helix is distributed, pass through
Control microcell antenna direction to control the incidence angle of electromagnetic wave, using the similar feature of the wireless propagation environment of train front and back, most
The influence of multipath reflection and Doppler effect is eliminated to big degree, the wireless signal that can be effectively improved vacuum pipe flying train passes
It is defeated, improve communication quality and user experience.
The additional aspect of the present invention and advantage will be set forth in part in the description, these will become from the following description
Obviously, or practice through the invention is recognized.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, required use in being described below to embodiment
Attached drawing be briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for this
For the those of ordinary skill of field, without creative efforts, it can also be obtained according to these attached drawings others
Attached drawing.
Fig. 1 is the front view of the vacuum pipe flying train communication system of the embodiment of the present invention；
Fig. 2 is the side view of the vacuum pipe flying train communication system of the embodiment of the present invention.
Description of symbols:
101- vacuum pipe；102- flying train；103- Chinese herbaceous peony aerial array；104- tailstock aerial array；105- is vehicle-mounted
Data processing centre；106- microcell antenna；107- central station；1061- backpropagation is distributed microcell antenna；1062- is just
Microcell antenna is distributed to propagating.
Specific embodiment
Embodiments of the present invention are described below in detail, the example of the embodiment is shown in the accompanying drawings, wherein from beginning
Same or similar element or element with the same or similar functions are indicated to same or similar label eventually.Below by ginseng
The embodiment for examining attached drawing description is exemplary, and for explaining only the invention, and is not construed as limiting the claims.
Those skilled in the art of the present technique are appreciated that unless expressly stated, singular " one " used herein, " one
It is a ", " described " and "the" may also comprise plural form.It is to be further understood that being arranged used in specification of the invention
Diction " comprising " refer to that there are the feature, integer, step, operation, element and/or component, but it is not excluded that in the presence of or addition
Other one or more features, integer, step, operation, element, component and/or their group.It should be understood that when we claim member
Part is " connected " or when " coupled " to another element, it can be directly connected or coupled to other elements, or there may also be
Intermediary element.In addition, " connection " used herein or " coupling " may include being wirelessly connected or coupling.Wording used herein
"and/or" includes one or more associated any cells for listing item and all combinations.
Those skilled in the art of the present technique are appreciated that unless otherwise defined, all terms used herein (including technology art
Language and scientific term) there is meaning identical with the general understanding of those of ordinary skill in fields of the present invention.Should also
Understand, those terms such as defined in the general dictionary, which should be understood that, to be had and the meaning in the context of the prior art
The consistent meaning of justice, and unless defined as here, it will not be explained in an idealized or overly formal meaning.
In order to facilitate understanding of embodiments of the present invention, it is done by taking several specific embodiments as an example below in conjunction with attached drawing further
Explanation, and each embodiment does not constitute the restriction to the embodiment of the present invention.
For the wireless communication problems of vacuum pipe flying train, the present invention provides a kind of vacuum pipe flying train communication
System can control the characteristics of receiving antenna receives electromagnetic wave phase using the antenna that double-helix is distributed, by controlling micro- day
Line direction controls the incidence angle of electromagnetic wave, using the similar feature of the wireless propagation environment of train front and back, farthest
The influence for eliminating multipath reflection and Doppler effect, can be effectively improved the wireless signal transmission of vacuum pipe flying train.
Vacuum pipe flying train communication system of the invention is carried out specifically below by a specific embodiment
It is bright.
Embodiment
A kind of vacuum pipe flying train communication system is present embodiments provided, Fig. 1 show vacuum described in the present embodiment
Pipeline communication system front view；Fig. 2 show vacuum pipe communication system side view described in the present embodiment.Such as Fig. 1 and Fig. 2 institute
Show, vacuum pipe flying train communication system described in the present embodiment includes: ground microcell antenna subsystem, car antenna subsystem；
It is sent simultaneously between the ground microcell antenna subsystem and car antenna subsystem by the microcell antenna of forward-propagating and backpropagation
Or it receives the dephased same signal of tool and realizes wireless communication.
Further, the ground microcell antenna subsystem includes: central station 107, the distribution of ground double helix
Microcell antenna 106；The car antenna subsystem includes: vehicle-mounted data processing center 105, car antenna array.
Further, the microcell antenna 106 of the double helix distribution includes: backpropagation distribution microcell antenna 1061 and forward direction
Propagate distribution microcell antenna 1062；The car antenna array includes: Chinese herbaceous peony aerial array 103, tailstock aerial array 104.
Preferably, the ground microcell antenna is mounted on the inner wall of the pipe of the flying train vacuum pipe, forward and reverse propagation
It is distributed microcell antenna to be distributed in vacuum pipe inner wall in double-helix, and forward-propagating antenna trace and backpropagation antenna trace exist
90 ° are differed in phase.Antenna distribution trajectory on vacuum pipe wall is spiral, can reduce on vacuum pipe wall adjacent two days
Interfering with each other in the vacuum pipe space reached before train antenna when line emits electromagnetic wave.
Forward-propagating antenna system and backpropagation antenna system are made of a series of miniature antenna, the miniature day
Line with have preferable directional beam figuration feature.The central axes of microcell antenna and vacuum pipe are a certain included angle, and and vacuum
The section of pipeline is also a certain included angle.Forward-propagating microcell antenna and backpropagation microcell antenna it is corresponding micro- at same position
Antenna and the angle of vacuum pipe central axes are just the opposite.
The central station 107 controls the forward and reverse data for propagating microcell antenna and sends and receives.If sending
Data, then the position current according to train, controls certain a pair of forward and reverse propagation microcell antenna while sending identical electric signal；
If receiving data, according to the current position of train, certain a pair of forward and reverse electric signal propagating microcell antenna and receiving is read, and
Phase Processing is gone to two path signal.
Preferably, the Chinese herbaceous peony aerial array is mounted on the head of train, and tailstock aerial array is mounted on the tail portion of train,
And it is respectively positioned on the center of vacuum pipe cross section, as a kind of most preferred mounting means, Chinese herbaceous peony aerial array is mounted on
The center on train head, tailstock aerial array are mounted on the center of last vehicle of train；The installation of vehicle-mounted data processing center
In vehicle body, controls two aerial arrays while receiving electromagnetic wave or transmitting electromagnetic wave.The Chinese herbaceous peony aerial array and
Tailstock aerial array is made of several directional aerials with certain beamforming capabilities, and the aerial array after combination is to train
Direction has certain beamforming capabilities.The Chinese herbaceous peony aerial array at any time only can in backpropagation antenna system
Some microcell antenna communicated, the tailstock aerial array at any time only can in propagated forward antenna system
Some microcell antenna is communicated.The vehicle-mounted data center controls the data receiver and hair of Chinese herbaceous peony Yu tailstock aerial array
It send.If sending data, vehicle-mounted data center control Chinese herbaceous peony and tailstock aerial array send identical electric signal simultaneously；If receiving number
According to vehicle-mounted data center receives the electric signal of the aerial array from Chinese herbaceous peony and the tailstock, and goes at phase to two path signal
Reason.
The electromagnetic wave direct projection of a certain microcell antenna transmitting in any time of train driving, forward-propagating antenna reaches vehicle
Tail aerial array, and other antennas in forward-propagating aerial band due to the distance train tailstock excessively closely or too far, cause to emit
Electromagnetic wave cannot be incident in effective range of receiving of train tailstock aerial array, but train tailstock car body will be incident on
Upper to reflect, since microcell antenna angle and vacuum pipe wall angle are smaller, the electromagnetic wave after reflection will not arrive again at the tailstock
Aerial array, simultaneously as car body penetration loss is larger, thus the electromagnetic wave that antenna emits in front of train is to the vehicle of last vehicle of train
The reception signal of tail aerial array does not influence.The electromagnetic wave of the backpropagation antenna transmitting of train Chinese herbaceous peony reaches train Chinese herbaceous peony day
The mode of linear array is similar with the tailstock.Since the incidence angle and vacuum pipe road angle of electromagnetic wave are smaller, through reflecting
The electromagnetic wave for reaching car antenna array afterwards is considerably less, and multipath effect has obtained good inhibition, can significantly reduce electromagnetic wave
Multipath effect in vacuum pipe；Due to wireless propagation environment identical before and after train, vehicle-mounted data processing center is for vehicle
Forward and backward antenna array receiver to two waypoint signals go Phase Processing after can eliminate Doppler effect.Electromagnetic wave is from vacuum tube
Road wall antenna to car antenna will not generate multipath effect and Doppler effect, greatly improve the transmission of wireless signal.
It can be seen by above technical scheme, the vacuum pipe flying train communication system of the present embodiment utilizes double helix
The antenna of shape distribution can control the characteristics of receiving antenna receives electromagnetic wave phase, control electromagnetism by control microcell antenna direction
The incidence angle of wave farthest eliminates multipath reflection and more using the similar feature of the wireless propagation environment of train front and back
The general influence for strangling effect, can be effectively improved the wireless signal transmission of vacuum pipe flying train, improve communication quality and user
Experience.
Those of ordinary skill in the art will appreciate that: attached drawing is the schematic diagram of one embodiment, module in attached drawing or
Process is not necessarily implemented necessary to the present invention.
All the embodiments in this specification are described in a progressive manner, same and similar portion between each embodiment
Dividing may refer to each other, and each embodiment focuses on the differences from other embodiments.Especially for device or
For system embodiment, since it is substantially similar to the method embodiment, so describing fairly simple, related place is referring to method
The part of embodiment illustrates.Apparatus and system embodiment described above is only schematical, wherein the conduct
The unit of separate part description may or may not be physically separated, component shown as a unit can be or
Person may not be physical unit, it can and it is in one place, or may be distributed over multiple network units.It can root
According to actual need that some or all of the modules therein is selected to achieve the purpose of the solution of this embodiment.Ordinary skill
Personnel can understand and implement without creative efforts.
Those of ordinary skill in the art will appreciate that: the component in device in embodiment can describe to divide according to embodiment
It is distributed in the device of embodiment, corresponding change can also be carried out and be located in one or more devices different from the present embodiment.On
The component for stating embodiment can be merged into a component, can also be further split into multiple subassemblies.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
In the technical scope disclosed by the present invention, any changes or substitutions that can be easily thought of by anyone skilled in the art,
It should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with scope of protection of the claims
Subject to.
Claims (10)
1. a kind of vacuum pipe flying train communication system, which is characterized in that vacuum pipe flying train communication system includes: ground
Face microcell antenna subsystem, car antenna subsystem；Pass through forward direction between the ground microcell antenna subsystem and car antenna subsystem
It propagates and the microcell antenna of backpropagation sends or receives the dephased same signal of tool simultaneously and realizes wireless communication.
2. vacuum pipe flying train communication system according to claim 1, which is characterized in that ground microcell antenna
System includes: central station, the microcell antenna of ground double helix distribution；The car antenna subsystem includes: vehicle-mounted
Data processing centre, car antenna array.
3. vacuum pipe flying train communication system according to claim 2, which is characterized in that the double helix distribution
Microcell antenna includes: backpropagation distribution microcell antenna and forward-propagating distribution microcell antenna；The car antenna array includes: Chinese herbaceous peony day
Linear array and tailstock aerial array.
4. vacuum pipe flying train communication system according to claim 3, which is characterized in that the ground double helix point
The microcell antenna of cloth is mounted on the inner wall of the pipe of the flying train vacuum pipe, and backpropagation is distributed microcell antenna and forward-propagating point
Cloth microcell antenna is distributed in vacuum pipe inner wall in double-helix, and forward-propagating distribution microcell antenna track and backpropagation distribution are micro-
Antenna trace differs 90 ° in phase.
5. according to the described in any item vacuum pipe flying train communication systems of claim 2 to 4, which is characterized in that described micro-
Antenna is made of a series of miniature antennas, has directional beam figuration feature.
6. vacuum pipe flying train communication system according to claim 5, which is characterized in that the microcell antenna and vacuum
The central axes of pipeline are a certain included angle, and are also a certain included angle with the section of vacuum pipe；Forward-propagating microcell antenna and anti-
To propagating, microcell antenna corresponding microcell antenna at same position is opposite with the angle of vacuum pipe central axes.
7. vacuum pipe flying train communication system according to claim 6, which is characterized in that the ground data processing
Center is used to control the forward and reverse data for propagating microcell antenna and sends and receives；When sending out data, the position current according to train
It sets, control certain a pair of forward and reverse propagation microcell antenna while sending identical electric signal；When data is received, worked as according to train
Certain a pair of forward and reverse electric signal propagating microcell antenna and receiving is read, and two path signal is gone at phase in preceding position
Reason.
8. vacuum pipe flying train communication system according to claim 3, which is characterized in that the Chinese herbaceous peony aerial array
It is mounted on the center on train head；The tailstock aerial array is mounted on the center of last vehicle of train；At vehicle-mounted data
Reason is centrally mounted at vehicle body, controls two aerial arrays while receiving electromagnetic wave or transmitting electromagnetic wave.
9. vacuum pipe flying train communication system according to claim 8, which is characterized in that the Chinese herbaceous peony aerial array
It can only be communicated at any time with some microcell antenna in backpropagation microcell antenna, the tailstock aerial array is in office
The meaning moment can only be communicated with some microcell antenna in forward-propagating microcell antenna.
10. vacuum pipe flying train communication system according to claim 9, which is characterized in that in the vehicle-mounted data
The heart is used to control data receiver and the transmission of Chinese herbaceous peony and tailstock aerial array；When sending out data, vehicle-mounted data center controls vehicle
It is preceding to send identical electric signal simultaneously with tailstock aerial array；When data is received, vehicle-mounted data center receive from Chinese herbaceous peony with
The electric signal of the aerial array of the tailstock, and Phase Processing is gone to two path signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910031296.6A CN109795525B (en) | 2019-01-14 | 2019-01-14 | Vacuum pipeline flying train communication system based on micro-antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910031296.6A CN109795525B (en) | 2019-01-14 | 2019-01-14 | Vacuum pipeline flying train communication system based on micro-antenna |
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| CN109795525A true CN109795525A (en) | 2019-05-24 |
| CN109795525B CN109795525B (en) | 2020-08-11 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113301528A (en) * | 2020-02-24 | 2021-08-24 | 中国航天科工飞航技术研究院（中国航天海鹰机电技术研究院） | Train-ground wireless communication system of ultrahigh-speed magnetic suspension train |
| CN113783644A (en) * | 2021-09-13 | 2021-12-10 | 中铁二院工程集团有限责任公司 | Modeling method for ground wireless communication channel of vacuum pipeline magnetic levitation vehicle |
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| CN109795525B (en) | 2020-08-11 |
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